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minnesota001 · 5 months ago

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Avoiding Nutrient Problems: Common Cannabis Growing Mistakes

Cannabis cultivation is an art and science that demands attention to detail. While the rewards of a successful harvest are satisfying, numerous pitfalls can derail your efforts, particularly when it comes to nutrient management. Addressing these issues and learning from others' experiences will keep your plants healthy and thriving. In this guide, we’ll highlight common cannabis growing mistakes and how to sidestep them for optimal results.

Understanding Cannabis Nutrition Basics

One of the most significant cannabis growing mistakes is neglecting to understand the nutritional needs of the plant. Cannabis requires a delicate balance of macro and micronutrients to flourish.

Key Nutrients for Cannabis Growth

Nitrogen (N): Essential for vegetative growth.

Phosphorus (P): Vital during flowering for root and bud development.

Potassium (K): Strengthens plants and supports overall health.

Failing to balance these nutrients can lead to stunted growth, yellowing leaves, and poor yields.

How to Avoid This Mistake

Research the life cycle of cannabis to understand its evolving nutrient needs.

Use fertilizers specifically designed for cannabis cultivation.

Mistake #1: Overfeeding Your Plants

Overfeeding is one of the most prevalent cannabis growing mistakes, especially for beginners who assume more nutrients equal faster growth. Excessive nutrients can cause nutrient burn, characterized by browning leaf tips and yellowing leaves.

Prevention Tips

Start with a lower nutrient dose than recommended and gradually increase based on plant response.

Observe your plants daily for signs of stress.

Mistake #2: Underestimating the Role of pH Levels

Another frequent cannabis growing mistake is ignoring the importance of pH. Cannabis absorbs nutrients efficiently only within a specific pH range:

Soil: 6.0 to 7.0

Hydroponics: 5.5 to 6.5

Incorrect pH can lead to nutrient lockout, where plants are unable to absorb nutrients despite their presence in the soil or solution.

How to Maintain pH

Use a digital pH meter to check water and nutrient solutions.

Adjust pH with professional products like pH up or pH down.

Mistake #3: Choosing the Wrong Growing Medium

Your choice of growing medium can significantly impact nutrient availability. Using the wrong medium or failing to adapt your nutrient plan to it is a common cannabis growing mistake.

Popular Cannabis Growing Mediums

Soil: Easy for beginners, but requires careful nutrient monitoring.

Coco Coir: Allows for excellent water retention and oxygenation but needs additional calcium and magnesium.

Hydroponics: High control over nutrients but requires meticulous pH and EC monitoring.

Avoiding the Mistake

Match your nutrient regimen to your growing medium.

Test your growing medium regularly for nutrient levels and adjust accordingly.

Mistake #4: Ignoring Water Quality

Water quality is a frequently overlooked factor that contributes to nutrient problems. Hard water, for instance, contains excessive minerals that may interfere with nutrient absorption, while soft water may lack essential elements like calcium and magnesium.

Solutions for Better Water Management

Use reverse osmosis (RO) water for a clean slate.

Add calcium-magnesium supplements if needed.

Test total dissolved solids (TDS) to ensure proper nutrient concentration.

Mistake #5: Overlooking Micronutrients

While macronutrients get the most attention, neglecting micronutrients like magnesium, calcium, and iron is a common cannabis growing mistake. Deficiencies in these can result in symptoms such as:

Magnesium Deficiency: Yellowing between leaf veins.

Calcium Deficiency: Weak stems and brown spots.

Iron Deficiency: Pale new growth.

Preventing Micronutrient Deficiencies

Use nutrient products with a full spectrum of micro and macronutrients.

Supplement as necessary, especially in hydroponic setups.

Mistake #6: Skipping the Flushing Process

Flushing is a crucial step in cannabis cultivation that many growers skip. Without flushing, nutrient buildup can lead to toxicity or unpleasant flavors in the final product.

Why Flushing Matters

Removes excess nutrients from the growing medium.

Improves the taste and aroma of the buds.

When and How to Flush

Flush during nutrient buildup or toxicity signs.

Perform a final flush 1-2 weeks before harvest to enhance bud quality.

Mistake #7: Blindly Following Nutrient Schedules

Generic nutrient schedules may not work for every setup, making this a common cannabis growing mistake. Factors like strain genetics, light intensity, and environmental conditions influence nutrient requirements.

Customizing Your Nutrient Plan

Adjust nutrient doses based on plant health and growth rate.

Keep a grow journal to track changes and plant responses.

Mistake #8: Mismanaging Light and Temperature

Environmental factors like light and temperature affect how cannabis plants absorb and utilize nutrients. Poor light placement or extreme temperatures can cause nutrient-related problems.

How to Optimize Environment

Use grow lights that mimic natural sunlight.

Maintain temperatures between 70–85°F with adequate air circulation.

Keep humidity levels between 40–60%, depending on the growth stage.

Mistake #9: Relying Solely on Synthetic Nutrients

While synthetic nutrients offer precision, over-reliance on them can harm the soil’s microbial life and lead to long-term nutrient imbalances.

Alternatives to Synthetic Nutrients

Incorporate organic nutrients like compost tea or fish emulsion.

Alternate between organic and synthetic feeding schedules for balanced growth.

Mistake #10: Overcomplicating Nutrient Regimens

With countless supplements and additives on the market, it’s easy to overcomplicate your feeding schedule. Overuse of bloom boosters, enzymes, or other products can lead to nutrient toxicity.

Keeping It Simple

Stick to a basic nutrient regimen tailored to your plants' growth stage.

Introduce supplements only when you notice deficiencies or specific needs.

Conclusion: On Avoiding Cannabis Growing Mistakes

Growing cannabis successfully requires a combination of knowledge, observation, and adaptability. Avoiding common cannabis growing mistakes like overfeeding, ignoring pH, and neglecting water quality will set you on the path to a healthy and productive harvest.

Stay vigilant, document your progress, and always strive to learn more about your plants’ needs. With the right approach, you can turn these potential pitfalls into stepping stones for cultivation success.

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uniglobalbusines · 9 months ago

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DO Meter

Uniglobal Business provides the advanced portable digital pen shape DO Meter having automatic temperature compensation and fast response time. It plays a crucial in various industries like aquaculture, wastewater treatment, and environmental monitoring.

#DO meter #dissolved oxygen meter #best do meter #uniglobal business

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burnsmegan66 · 1 year ago

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What is the role of IoT in the water industry?

IoT, or the Internet of Things, is the technology that enables the connection and communication of various devices, sensors, and systems over the internet. IoT has a significant role in the water industry, as it can help improve the quality, efficiency, and sustainability of water management. Some of the applications of IoT in the water industry are:

• Water quality monitoring: IoT sensors can measure various parameters of water quality, such as pH, turbidity, dissolved oxygen, conductivity, temperature, etc. The data can be transmitted to a cloud platform or an on-premise server for analysis and visualization. The system can also generate alerts and notifications if the water quality exceeds or falls below the predefined thresholds. This can help ensure the safety and compliance of water for various purposes, such as drinking, irrigation, or industrial use.

• Water consumption monitoring: IoT sensors can measure the water flow and volume in pipes, tanks, or meters. The data can be used to monitor the water consumption patterns and trends of different users, such as households, businesses, or farms. The system can also provide feedback and recommendations to users to reduce their water usage and save costs. This can help conserve water and prevent wastage.

• Leak detection and prevention: IoT sensors can detect leaks in pipes, valves, or fittings by measuring the pressure, vibration, or sound. The system can locate the source and severity of the leak and notify the relevant authorities or personnel for repair. The system can also prevent leaks by controlling the water flow or shutting off the valves automatically. This can help reduce water losses and damages.

• Remote control and automation: IoT devices can enable remote control and automation of various water systems, such as pumps, valves, filters, or sprinklers. The system can adjust the settings or parameters of these devices based on the data from sensors or external sources, such as weather forecasts or demand forecasts. The system can also enable remote access and operation of these devices from a web or mobile application. This can help optimize the performance and efficiency of water systems.

Bridgera is a leading provider of custom IoT solutions that can help businesses in the water industry benefit from IoT technology. Bridgera offers end-to-end IoT solutions that include IoT device integration, cloud platform development, data management and analytics, custom dashboards and reports, security and privacy measures, and user support. Bridgera uses cutting-edge technologies and best practices to deliver high-quality IoT solutions that meet the specific needs and goals of each client. Bridgera also offers flexible pricing models and scalable solutions that can accommodate any budget and size of business.

One of the examples of Bridgera's IoT solutions for the water industry is their remote monitoring solution for water purification systems Water 4.0: digital journey of water. This solution enables real-time monitoring and control of water purification systems using IoT sensors and devices. The solution helps improve the quality and safety of water, reduce maintenance costs and downtime, enhance customer satisfaction, and generate new revenue streams.

If you are interested in learning more about Bridgera's IoT solutions for the water industry, you can visit their website IoT in Water — What you need to know about Intelligent Water Systems or contact them directly 6 Benefits of Smart Water Management Using IoT Technology | Digiteum.

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midseo · 2 years ago

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Supermarket Scales, Retail Scale, Price Computing Scales, Mumbai, India

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covey123 · 4 years ago

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Digital DO Meter AN 19

Digital Dissolved Oxygen Meter 3%-digit LED display along with Gold/Silver probe mains operated.

For More Info kindly mail on us: [email protected]

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watertanklevelindicators · 4 years ago

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Rainwater Tank Gauges is an essential tool for any home gardener. Whether you are using a rainwater harvesting system or simply measuring your own rainwater, a rain gauge can save you time and money. The more you know about the tools you use, the more efficient your gardening will become. Not only that, it will allow you to conserve water as well. Rainwater tank gauges can help you do both!

Rainwater Tank Gauges are designed to be used with either a gravity feed or submersible sump pan style system. A mechanical rain gauge is the perfect way to accurately measure the exact water level in your underground tank. Water level indicator gauge kits typically indicate how much water a tank holds within it in millimeters, ounces, or gallons. Indicator kits can also indicate the density of the water (density determines how much weight it can hold) and other helpful data. Rainwater tank gauges also indicate how much rain your area normally receives, which helps you plan your gardening accordingly.

Rainwater Tank Gauges come in many different styles and varieties. There are single meter and multi-meter gauge systems that can easily be connected to your home computer or a power supply source. Many rainwater tank level indicator gauges come with an LED readout that will indicate in inches of water. You can also get rainwater gauge kits that have a thermometer, an audio alarm, and a water dispenser built into the measuring device. You can get a rain barrel gauges, bird feeders, and UV alarms that are designed to alert you when water levels drop in your pond. And there are automatic gauges that will measure how much rainwater you receive in a day and an indicator that measures the temperature of the water in the pond.

There are a few different types of rainwater tank gauge tank level indicators. The most common types are digital pressure gauges, which are easy to read and use. These gauges read either of two signals: a constant or a varying signal.

Single meter gauges are used in single tanks, while multi-meter gauges are used in multi-tank systems. Multi-meter tank gauges typically have the LCD display and are used for rainwater tanks that provide more than one stage of dissolved oxygen. There is also a digital temperature gauge available on some multi-meter rainwater tanks. This digital thermometer displays the temperature of the water in the pond in feet above ground level.

There are a number of advantages of using rainwater tank level indicators. These gauges can be used for a variety of purposes. For instance, they can measure the water levels in ponds and can even monitor various environmental conditions like soil erosion and the rate of algae growth. They can also be used to monitor various physical processes in water tanks, like evaporation and convection. The most common indicators are the spring and surface gauge devices, which are used to monitor both total water levels and water temperatures. You can also find depth indicator devices and self-leveling gauges, which are designed to accurately determine the bottom of a body of water.

Before you buy any gauge, it is important that you do your research and determine what its primary uses are. To determine the primary use of your gauge, you need to consider whether it is to monitor surface or total water levels. In addition, you should consider the size and features of the digital float.

There are two types of traditional liquid meters: the mechanical analog and digital type. The first type of gauge has a small reservoir on the top and contains an internal motor that pumps water into the tank. This is usually the more popular variety among hobbyists. However, there are modern gauges that have replaceable heads, which eliminate the need for manual pumping. They measure the pressure of the liquid through a spring and are available with different resistance ranges, depending on the pressure. Pressure sensitive resistors are included to prevent the pressure from rising above a certain threshold.

#water level indicator #Water level gauge #Rainwater Tank Level Indicators

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juniperpublishersoceanography · 4 years ago

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Effect of Different Water Sources on Survival Rate (%) Growth Performance, Feed Utilization, Fish Yield, and Economic Evaluation on Nile Tilapia (Oreochromis niloticus) Monosex Reared in Earthen Ponds- Juniper Publishers

Abstract

The aim of the present study was to investigate the effect of water source on survival rate %, growth performance, feed utilization, fish yield, economic evaluation and production of Nile tilapia (Oreochromis niloticus) monosex reared in earthen ponds. Nine earthen ponds were used and divided into three categories of three earthen ponds each. The average size of each pond was approximately 5200m2, 6000 monosex all male Nile tilapia were used in each pond and were stocked for 192 days. The fingerlings average weight was 4.38±0.03g/ fish, the fish were fed using a floating feed 25% crude protein, and were fed at a daily rate of 3% of their body weight. Results showed that body weight was increased significantly (P<0.05) with well water to 472.33g/fish. While were 354.17 and 320.17g/fish for fresh and agricultural drainage water, respectively. Specific growth rates (SGR%) increased with well water compared to both fresh and drainage water. Feed conversion ratio (FCR) and protein efficiency ratio (PER) were improved with Agriculture drainage water. Survival rates with fresh and well water were 98.53% and 98.31% respectively, however, was 95.05% with Agriculture drainage water. Total fish yield were affected significantly by treatments. It was 2128, 1921.8, and 2837.7kg at fresh, drainage and well water respectively. Net return arrived to 12996 for well water source when it was 6784LE for agricultural drainage water and 9158LE for fresh water.

Keywords: Water resources; Nile tilapia; Growth per

Introduction

Nile tilapia, Oreochromis niloticus (Linnaeus) is one of the most important freshwater fish in world aquaculture [1]. It is widely cultured in many tropical and subtropical countries of the world [2]. Rapid growth rates, high tolerance to adverse environmental conditions, efficient feed conversion, ease of spawning, resistance to disease and good consumer acceptance make it a suitable fish for culture [3]. Farmed tilapia production increased semi dramatically in recent years, increasing from 383,654mt in 1990 to 2,326,413mt in 2006 [4]. Tilapia has established a secure position in a number of water impoundments of India. But, its performance in open water ponds of the country has been discouraging over the years [5]. For tilapia aquaculture is excessive reproduction and the resulting small size of the fish produced.

Egypt has suitable natural conditions for desert aquaculture. Egypt has vast resources of groundwater [6]. Fresh groundwater resources in Egypt contribute 20% to the potential water resources in Egypt. One of the groundwater resources is the Nile Valley and Delta system with the storage capacities of 200 billion m3 and 300 billion m3, respectively. Oasis water in the west desert, Bahariya, Farafra, Dakhla, Kharga, and Siwa, were established from underground natural wells and springs.

With the prohibition of the establishment of fish farms on agricultural land, with the prohibition of the use of Nile water for fish farming, with increased competition for spaces adjacent to the lakes and sources of agricultural drainage water, despite its disadvantages, has caused the possession of new fish farm in the Nile [7]. Valley of the most difficult things and out of reach. Hence the search for an alternative to invade the desert, especially with the development of methods of fish farming and providing the requirements of education and with the provision of underground water of the highest purity with different salinity (fresh & brackish & marine) and where the trained professionals are available [8]. In the hope to produce clean fish with improved quality and cheaper than other animal proteins we conducted the present research in a private fish farm located in the desert belonging to Noubaria Agricultural Development company (Ragab Farms) aiming to study the effect of water source on survival rate (%) growth performances, feed conversion ratio, protein efficiency ratio, annul fish yield and profitability Nile tilapia (Oreochromis niloticus) monosex commercial farming.

Materials and Methods

Water Source

Three types of water sources: fresh water, agricultural drainage water, and well water were compared in the present experiment. Water supplies were replaced three times during the experimental period (192 days).

Experimental design

Nine earthen ponds (5200m2) were used in these experiment were divided into three categories of earthen ponds even three ponds represent one treatment (fresh water, drainage water and well water.

Stocking density

6000 monosex all male Nile tilapia (Oreochromis niloticus) fingerlings of average weight (4.38±0.03g/ fish) were stoked in each pond on April 11, 2007 and observed through October 19, 2007. The area of each pond 5200m2.

Experimental Fish

Fingerlings of all male Nile tilapia (Oreochromis niloticus) monosex were collected from Noubaria Agricultural Development Company (Ragab Fish Hatchery) and were over wintered in earthen ponds to provide suitable fingerlings for the beginning of the growing season. All ponds in this experiment were sampled monthly using a cast net method. Sample sizes were 1% of the stocked numbers and the average individual fish weight was calculated to determine growth rates. Then, with these calculations, the feed amounts were adjusted for the following month.

Experimental diet

The floating commercial diet used in this experiment was fed at a daily rate of 3% of the fish body weight by using self feeders The ingredients of the commercial diet used in the experiment is presented in (Table 1). The dietary composition of vitamin and mineral premix is listed in. Fish were fed a floating ration for 6 days per week. Feeding rate was adjusted monthly based upon the calculated biomass of fish obtained through the monthly sampling and assumption of 100% survival.

Water quality

Physical parameters: Water temperature °C was determined at every days in the experiment.

Chemical Parameters: Samples for determination of dissolved oxygen (DO) were immediately fixed after sampling and DO concentration was determined according to Winkler's technique. Methods described by Golterman et al. [9] were used in determination of ammonia. Also pH was measured by digital pH meter (Orion model 720 A, s /No 13602) in all experiments.

Chemical Analysis of the commercial of Diet: Chemical analysis of the commercial diet used in the experiment was done according to AOAC (2000) as shown in Table 1.

Growth parameters and Statistical analysis: Data on growth, feed utilization, survival rate and proximate and chemical composition of whole fish body were subjected to one-way ANOVA [10]. To locate significant differences between fish size within different water resources of pond. Duncan's multiple rang test [11] was done. All percentages and ratio were transformed to arcsine values prior to analysis [12].

Results and Discussion

Experimental diet

The commercial diet used in the present experiment contained 25% CP and 4.3kcal/g gross energy (Table 1). Although there are large variations in the data available about the optimum protein level for tilapias which range between 20 and 40% crude protein [13-15] practical diets as low as 25% protein was successfully used for rearing monosex tilapia [3].

Vit. A 8000 I.U. Vit. D3 4000 I.U.; vit. E 50mg; Vit. k3 19mg;

Vit. B1 40mg; vit. B2 25 mg; Vit. B6 125mg; vit B12 69mg;

Pantothenic acid 40mg; Nicotinic acid 125mg; Folic acid 400mg;

Water quality

Collected data on water temperature and dissolved oxygen (DO), pH and ammonia are summarized in Tables 2-4. Water temperature throughout the present experiments ranged between 24.13±0.53 and 30.26±0.45 °C in fresh water experiment, 24.23±0.53 and 30.65±0.53 °C in drainage water experiment and between 29.94±0.12 and 33.63±0.43 in well water experiment which was the high temperature and closely related to the average of optimal value for tilapia (28-30 °C). Our results were agreement with Broussard [16] reported that tilapia as a warm water fish that dominate African lakes, are known to grow well in high temperature. The fluctuation of water temperature are reached its maximum values during August, however its minimum were during April and November.

*Each value was on average of four sub samples

Biotin 20mg; cholin chloride 80 mg; copper 400mg; Iodine 40mg;

Iron 120mg; Manganese 220mg; Zink 22mg; Selenium 4mg

Means in the same column having different letters are significantly different (P<0.05).

Overall means of water dissolved oxygen (DO) throughout the present experiment were 7.20±0.37mg DO/I for fresh water, 7.19±0.36mg DO/I for drainage water and 6.33±0.36mg DO/I for well water. The fluctuation of water dissolved oxygen (DO) showed that the maximum values of DO were obtained in November for the fresh and drainage water and August in well water, however, the lowest values were in April. In general, dissolved oxygen levels were within the high standards and higher than cited by Boyd [18] for good production of tilapia (4.20 to 5.90mg DO/I) in aquaculture ponds. One of the most important environmental factors is dissolved oxygen. It is considered a limiting factor for success or failure in intensive culture. An excellent aquaculture attribute of tilapia is their tolerance to low dissolved oxygen concentration [16]. The dissolved oxygen content in earthen ponds depends on the pond water temperature, fish biomass and rate of water exchange [18]. Chervinski [19] reported that O. niloticus survived short term exposure to 0.1mg DO/ l. However, Collins [20] observed in a review on oxygen concentration of various studies, that growth rate of non-salmonid fish was increasingly depressed as dissolved oxygen fall below 50% saturation. Rappaport et al. [21] reported that growth of carp was reduced by predawn dissolved oxygen less that 25% saturation. Tichert-C & Green [22] compared the growth of tilapia monosex in earthen ponds aerated or unaerated at 10 or 30% saturation of dissolved oxygen. They found that tilapia production and final weight were significantly greater in aerated ponds than unaerated ponds.

The water pH values throughout the present experiments ranged between 8.00±0.13and 8.10±0.13 with an overall mean of 8.04±0.13 in fresh water and ranged between 8.01±0.13 and 8.10±0.13 with an overall mean of 8.05±0.13 in drainage water and ranged between 7.98±0.13and 8.01±0.13 with an overall mean of 8.00±0.13 in well water. The fluctuations of pH reach the highest value of 8.10+0.13 during August in fresh and drainage water and 8.01+0.13 in well water. The results showed that the present pH values are suitable. For rearing tilapia monosex in earthen ponds. Johnson [23] recommended the range of pH 6.5 to 9.0 for most of freshwater fish species.

The water un-ionized ammonia (NH3) throughout the present experiments ranged between 0.09±0.01 and 0.12±0.01 with an overall mean of 0.11±0.01 in fresh water and ranged between 0.10±0.01 and 0.13±0.01 with an overall mean of 0.11±0.01 in drainage water and ranged between 0.06±0.01 and 0.10±0.01 with an overall mean of 0.077±0.01 in well water. The fluctuations of un-ionized ammonia reach the highest values of 0.13mg/ l during August. Unionized ammonia concentrations in the experimental ponds generally remained below levels which would cause chronic toxicity problems in tilapia. Tilapia is more tolerant to elevated levels of ammonia than more other sensitive species such as salmonids [23]. Some tilapias have been shown to acclimate to higher levels of ammonia after chronic exposure to low levels [24]. Johnson [23] showed that levels of un-ionized ammonia which may adversely affect growth in tilapia range from 1mg/ l to 2mg/ l ammonia where temperature and pH are within normal range.

Growth performance of tilapia monosex

Mean weight: Results of the present study showed that the mean weights at all rearing intervals different significantly (P<0.05) during all the experimental periods (Table 5 & Figure 1). Averages of fish body weights for fresh water, drainage water and well water were found to be 23.16, 18.66 and 25.16g, respectively after the 1st month of stocking. The statistical evaluation of results indicated that live weights at this period increased significantly (P<0.05) with using well water. A similar trend was also observed in fish body weights during the other growing periods. At harvest average body weight of fish stocked at well water was significantly (P<0.05) higher than that of fish stocked in fresh or drainage water, which indicates that weights fish were decreased in fresh and drainage water with increasing for used well water at harvest were 354.17g, 320.17g and 472.33g for fresh, drainage and well water, respectively. This significant advancement in fish body weights with increasing at higher temperature of water advocated by Azaze et al. [25] reported that the final mean weight was significantly higher at 26 and 30 °C than at 22 and 34 °C. This finding agrees with our results.

Average daily gain (ADG g/day): Results presented in Table 5 revealed that water sources, affected significantly (P<0.05) ADG during all experimental periods tested (30, 60, 90.120.150.180 and 210 days after start). In general these results indicated that the well water favored significantly ADG of the tilapia monosex in intensive culture system. The results of this point were in agreement with those found by [17] who grew O. niloticus from 49g to 271g in 122 days (1.4%/day). Siddiqui et al. [15] found that ADG of tilapia O. niloticus reared for 98 days at different water exchange in outdoor concrete tanks was 1.06g / day at 30% dietary crude protein. In the present study the average daily gain was higher with 25% crude protein at all treatments. However, the optimal feeding rate depends on fish size and Specific Growth Rate (SGR %): Results presented in Table 5, revealed that water sources, affected significantly (P<0.05) SGR% during all experimental periods tested (30, 60, 90.120.150.180 and 205 days after start). In general these results indicated that the well water, favored significantly (P<0.05) SGR% of the tilapia monosex in intensive culture system.

During all tested experimental periods tested (30, 60, 90.120.150.180 and 205 days after start) SGR% increased significantly (P<0.05) in almost linear manner in the well water than fresh and drainage water In the present study SGR% values in case of well water continuously higher than fresh or drainage water in all experimental periods. This may be due to the higher temperature of the well water (average 31.94 °C) compared to 27.47 and 27.81 °C for fresh and drainage water, respectively. The results obtained in SGR% are in agreement with those found by Eid & El Denasoury [27] who indicated that increasing temperature from 16 °C to 27 °C improve growth rate of Nile tilapia, which using well water.

Feed conversion ratio (FCR): Results presented in Table 5, show that there were significant (P<0.05) effects of water sources on FCR, feed conversion ratio was observed at harvest was 2.87 at fresh water, followed by 2.83 at well water and 2.80 at drainage water and 2.94 for 1700m2 followed by 2.89 for 4000m2 followed by 2.75 for 5200m2 and was 2.57 for 6000 fish/ acre, 2.75 for 8000 fish/ acre and 2.78 for 10000 fish/ acre. The analyses of variance of the FCR values are presented in Table 5. The FCR is affected by the physiological state of the fish, environmental condition, [28]. Lovshin et al. [29] found that FCR for all male tilapia in earthen ponds was higher (4.3) than when compared with all male and female tilapia in earthen ponds (FCR=7.2). while, fish growth is affected by the amount of feed consumed and the efficiency of assimilation [30].

Protein efficiency ratio (PER): Results of protein efficiency ratio (PER) are presented in Table 5, There were significant (P<0.05) effects of water sources, on PER, it improved significantly (P<0.05) with each increase in pond sizes and decrease stocking density throughout the experimental periods. The best PER observed at harvest was 1.42 with drainage water, followed by 1.40 at well water and 1.38 at fresh water Nyina-W et al. [31] confirmed that when protein supply is appropriate (400500g protein/kg feed for percid fish), different lipid contents in feeds do not have an impact on the rearing results of pikeperch.

Fish survival rate: Results in Table 6 showed that survival rates were changed significantly (P<0.05) by water resources, in fresh and well water were insignificantly (P<0.05) different but survival of the fish in drainage water was 95.05% which was less than survival rates in both fresh water and well water indicating the probable effect of some faction of water quality.

Fish yield: Results of Table 4 show fish yield (kg) per acre as affected by water sources,. Results revealed that total yield increased significantly (P<0.05) with well water. The total production was found to be 133.34% and 90.31% for well water and drainage water, respectively, while it was found to be 76.33% and 68.84% for 4000m2 and 5200m2.

The results of the present experiment were similar to those of Tal & Ziv [32] who showed that the net yield of tilapia monosex in earthen ponds was 16750Kg /ha (7035.0kg/ acre) after 100 days of stocking of 80.000 fish/ha, (33600 fish/acre, 8 fish/m2) on the other hand Eid & Denasoury [27] indicated that increasing temperature from 16 °C to 27 °C improved growth rate of Nile tilapia. Watanabe et al. [33] found that growth rates generally increase with increasing temperature and where markedly lower at 22 °C and well water is the best because the temperature constant through the year and the best quality of the water. [34] found the higher yield obtained in small pond sizes because the bigger ponds with greater surface area were more difficult to manage and often resulted in lower fish yields.

All fish species are characterized by an ideal range of temperature in which they show their maximum growth [3537]. Several studies have been reported that the specific water temperature range showed the faster growth in Pikeperch, Sander lucioperca at 20 °C to 25 °C [38-40]. Low temperature causes sluggishness by retarding the digestion speeding of fish [41]. Some researchers have found that the digestion rate has been increased as the temperature increases [42]. Environmental temperature is one of the most important ecological factor which also influence the behavior and physiological process of aquatic animals [43].

One of the major advantages of groundwater sources is their constant temperature throughout the year. Shallow sources of groundwater approximate the mean air temperature of the area. The chemistry of groundwater is directly dependent on the geology of the area surrounding the source. In limestone areas, groundwater is hard, and high in calcium and carbon dioxide [44]. In areas of granite formation, the groundwater tends to be soft, low in dissolved minerals and carbon dioxide. As will be discussed later, there are advantages and disadvantages to both, emphasizing the need for early extensive water quality testing.

Water temperature has substantial effect on fish metabolism. In response to decreasing of water temperature the enzyme activity of tissues have been increased [45]. Velmurugan et al. [46] have investigated that histopathological and tissue enzyme changes of C. gariepinus exposed to nitrite when water temperatures changes from 27 °C to 35 °C. In a stressful and unfavorable environmental condition GPT and GOT may increase in blood serum. In the present study serum GPT and GOT level were affected by different water temperature. Serum GPT and GOT amount in different fish fed at 20 °C are comparatively lower than those of fish fed at 16 °C and 24 °C experiments (Tables 1-3). These results indicated that 20 °C may be a favorable water temperature for better growth of 16g juvenile Korean rockfish [47,48].

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wizsensor · 1 month ago

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annieboltonworld · 6 years ago

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Juniper Publishers-Open Access Journal of Environmental Sciences & Natural Resources

Comparative Assessment of Physicochemical Parameters of Udaipur City, (Raj.) India

Authored by Chandra Shekar Kapoor

Abstract

Urbanization and Industrial activities lead the water contamination. It’s a serious problem now a day. Analysis of the water quality is essential to take a safety measures to protect & preserve the natural ecosystem. As a part of this study, Assessment of the water quality was carried out for different lakes in the City of Udaipur. The present analysis is aimed to assess the physicochemical parameters of water in Udaipur City. For determining the present water quality status by statistical evaluation 35 different parameters have been considered Viz. pH, color, total dissolved solids, electrical conductivity, total alkalinity, total hardness, chromium, zinc, manganese, nickel, BOD, COD, fluoride, zinc etc. The study of physicochemical and biological characteristics of this water sample suggests the evaluation of water quality. The indices had been computed from Jan 2013 to Dec. 2015.

Keywords: Physicochemical Parameters; B.O.D; C.O.D; Drinking Water Standard; Water Quality; Coliform

Introduction

Water is the most crucial factor in shaping the land and regulating the climate. It is one of the most important compounds that profoundly influence life. Wetlands are probably the earth’s foremost freshwater resources that provide food and habitat for numerous aquatic life including threatened and endangered species. Therefore conservation of wetlands is pretty essential as wetlands are one of the most threatened habitats in the world. The most important step for conservation of wetlands is to maintain a proper water quality. The water quality is directly related to the health of the water body hence proper management of water quality of the aquatic environment is very much crucial. Analysis of the British Columbia water quality index for watershed managers: a case study of two small watersheds [1]. The application of water quality indices and dissolved oxygen as indicators for river water classification and urban impact assessment [2]. Some of the most recent work on water quality of various aquatic environments. Assessment of bacterial indicators and physicochemical parameters to investigate pollution status of Gangetic river system of Uttarakhand, India [3]. DO-BOD modeling of River Yamuna for the national capital territory of India using stream II, a 2D water quality model [4]. Comparative analysis of regional water quality in Canada using the water quality index [5]. Physicochemical and microbiological study of Tehri dam reservoir, Garhwal Himalaya [6]. Water quality analysis of River Yamuna using water quality index in the national capital territory, India [7]. The impact of pharmaceutical industry treated effluents on the water quality of river Uppanar, south-east coast of India: A case study [8]. Seasonal variations in Physico-chemical characteristics of Rudra sagar wetland- a Ramsar site, Tripura, India [9].

Material and Methods

Study area

The city of Udaipur (state Rajasthan, India) known as ‘city of lakes’ is situated about 600 m above the mean sea level and is located among the lush green hills of Aravali range between 24°35’ N latitude and 73°42’ E longitude. There are three major lakes around Udaipur and within, e.g., Fateh Sagar, Udai Sagar and Pichhola. The city population is around 0.65 million and It has a distinctly tropical climate with marked monsoonal effect. The climate of Udaipur can be divided into three distinct seasons, i.e., summer (Mar-Jun), rain (Jul-Oct) and winter (Nov-Feb). The average temperature ranges from 5°C in winter to maximum of 41°C in summers. The annual average rainfall ranges from 62.5 cm to 125 cm during normal monsoon regime. The climate is divided into three seasons, Summer(Apr-Jun), Rainy (Jul-Oct) and Winter (Jan-Feb). The present study was conducted on the Physico-chemical parameters of the Fateh Sagar, Udai Sagar and Pichhola lakes.MethodologyThe physicochemical parameter, water temperature was measured in situ by using hand mercury thermometer, pH was estimated by Digital pH –meter (Elico-120).Turbidity was measured by Water Analyzer, EM-61, Electrical conductivity was measured by conductivity meter. (Tanco EE-014 Series Digital Conductivity Meter), TDS was measured with the help of Digital TDS meter. Other parameters, i.e. Total Alkalinity, Dissolved Oxygen, Biological Oxygen Demand(BOD) and Chemical Oxygen Demand (COD), Chloride, Sulphate, Sodium, Calcium, Magnesium, Total Hardness, Phenolphthalein Alkalinity, Phosphate, Nitrite, Fluoride, Ammonical Nitrogen, Boron Dissolved, Potassium, Cyanide, Cadmium, Lead, Chromium, Zinc,Iron, Copper, Nickel,Total Kjeldahl Nitrogen. The analysis of Total Suspended solids, Total Dissolved Solids, Fixed Dissolved Solids, Fecal Coliform and Total Coliform of water performed as per the standard methods [10-12] in the laboratory.

Results

The results of investigations of various parameters of Pichola lake water quality were recorded for two years (Jan 2013 to Dec 2014). During this period (Tables 1 & 2), analysis of various physicochemical parameters of different physical sites of Udaipur city was performed and it was revealed that the range of temperature in different sampling sites was 18 degrees centigrade (minimum) to 25-degree centigrade (maximum). The pH was found 7.70 (minimum) in the month of Jan-Feb, 2013) and 8.60 (maximum) in the month of May-Jun, 2014. The amount of Conductivity in the different samples were minimum at 558 (Jul- Aug, 2014) and maximum 732 (Jul-Aug, 2013). The amount of Total Alkalinity recorded minimum at 5.50 mg/l and maximum 152 mg/l. The amount of Dissolved Oxygen recorded minimum as 0.9 mg/l in Jul-Aug, 2013 and maximum 6.45 mg/l in May- Jun, 2014. In the case of B.O.D. lowest value was recorded in the month Jan-Feb, 2013 at 0.081mg/l and highest in the month of Sep-Oct, 2013 at 1.85 mg/l. C.O.D. content in the water samples was recorded highest during Sep-Oct, 2013 (25 mg/l) and lowest during May-Jun, 2013 (5.69 mg/l). Similarly in the samples of Chloride, Sulphate recorded highest in the months of Jul-Aug, 2014 (114 mg/l) and in Mar-Apr, (65 mg/l), and minimum in the samples of Sep-Oct, 2013 (49 mg/l) and of Jul-Aug, 2013 (31.0 mg/l ). Sodium content was observed maximum in the months of Jan-Feb, 2014 (94 mg/l) and minimum in those of during Sep- Oct, 2013 (32 mg/l). ). The amount of Calcium and Magnesium was recorded higher in the months of and Mar-Apr, 2014 (49.5 mg/l; 19.51 mg/l) and lower in Jul-Aug, 2013 & Nov-Dec, 2014 (26.1 and 1.80 mg/l) in the sample of Pichola Lake respectively. Fecal Coliform content recorded maximum and minimum in the months of Nov-Dec, 2014, (7 MPN /100ml); Jan-Feb, 2013 (4 MPN /100ml). The amount Phenolphthalein Alkalinity as recorded of the different samples as maximum 8 mg/l Jul-Aug, 2014. The amount of Turbidity ranged between 0.39 and 9.3 NTU. Similarly, the amount of Total Kjeldahl Nitrogen was minimum at Nov-Dec, 2014, 0.80 mg/l and Jul-Aug, 2014 maximum 2.24 mg/l. The Total Hardness content was recorded highest during Mar- Apr, 2014 (186 mg/l) and lowest value (89 mg/l during Jul-Aug, 2014). Total Coliform content was higher during Mar-Apr,2013 (19 MPN/100ml), lower value 3 MPN/100ml Nov-Dec, 2014. Total Dissolved and Fixed Dissolved Solids recorded highest in the months of Jun-Feb, 2014 (389 mg/l & (219 mg/l), and minimum in the samples of Sep-Oct, 2013 (270 mg/l) and Mar- Apr, 2013 (139 mg/l). The lowest values of Ammonical Nitrogen were recorded during (Jan-Feb, 2013, 0.03 mg/l)and the highest values in Nov-Dec, 2014 (0.81mg/l).The amount of Boron Dissolved were recorded highest during Nov-Dec, 2013as 0.79 mg/l and lowest 0.001mg/l in Jan-Feb, 2014.The highest amount of Phosphate was recorded during the Sep-Oct, 2013 (0.03 mg/l) lowest 0.0 mg/l Nitrate was recorded highest during Mar-Apr, 2014 (0.07mg/l) and lowest during Jul-Aug, 2013(520). It was observed that the amount of Potassium in the water sample of Pichola lake was high in Jun-Feb, 2013 (0.69mg/l) and lower in Jul-Aug, 2013 (0.4 mg/l).Total Suspended solids were found high during Mar-Apr, 2013 in the sample water of lakes (33 mg/l) and minimum value in Jan-Feb,2013 (1.8 mg/l). Highest Fluoride content was recorded in (0.99 mg/l during Jul-Aug, 2014) and lowest in the sample of industrial area (0.06 mg/l during Jan- Feb, 2013). Pichola Lake and Fateh Sagar area were computed (Tables 3-8).During two years of study of water sample of Fateh Sagar (Tables 3 & 4) very low temperature was recorded in Jan-Feb, 2014 (20-degree centigrade) whereas the high temperature was recorded during Mar-Apr, 2013 (24.6-degree centigrade).The pH content was higher during Jan-Feb, 2013 (8.7), lower in Jul-Aug, 2013(7.84). Conductivity was recorded highest during Jul-Aug, 2013 (1281) and lowest during Jul-Aug, 2014 (520). The amount of total Alkalinity was recorded higher during Sep-Oct, 2014 (150mg/l;) and lowest during Mar-Apr, 2013 (115mg/l) at lake sites. Higher values of Dissolved Oxygen were estimated during Jul-Aug, 2013 (6.74mg/l) and lower values estimated in Sep- Oct, 2013 (4.16mg/l) in Fateh Sagar’s water sample. The B.O.D. content was recorded higher during Jan-Feb, 2013 (3.40 mg/l) and lower during Jul-Aug, 2014(3.30 mg/l). The C.O.D. recorded highest during Nov.-Dec 2013 (63.1 mg/l) and the lower amount was recorded in the samples of industrial area’s water during May-Jun, 2013 (7.2 mg/l). The Chloride content was recorded highest during Mar-Apr, 2013 (122 mg/l) and lowest during Jul-Aug, 2013 (12.1mg/l). The lowest values of Sulphate were recorded during Jan-Feb, 2013, (29mg/l) and highest values in Jul-Aug, 2014 (68 mg/l). Sodium was found to be highest in the water samples of the lakes with its highest value recorded during Nov-Dec 2014 (81mg/l) and lowest value in Jul-Aug, 2013 (28 mg/l). The amount of Magnesium was recorded higher during Mar-Apr, 2013 (23.40 mg/l) and lowest in Jan-Feb, 2014 (2.80 mg/l). The Fecal Coliform content was recorded lowest during Jan-Feb, 2013 (3 MPN/100ml) and during Jul-Aug, 2014(7 MPN/100ml).Water samples Phenolphthalein Alkalinity lower values were estimated as zero and highest values in Mar-Apr, 2013 (27 mg/l). In Fateh Sagar’s water, Turbidity was highest during Mar-Apr, 2013(4NTU) and lower May June 13 0.27 NTU, respectively. In the samples of Total Kjeldahl Nitrogen were recorded maximum during Mar-Apr, 2013(1.93 mg/l) and minimum in Jan-Feb, 2013 (0.56 mg/l). In the case of Total Hardness, the lowest value was recorded in the months of Jul- Aug, 2013, at 99 mg/l and highest in the month of May-Jun, 2014 at 180 mg/l. Total Coliform lowest concentration was observed in the month of Mar-Apr, 2013 at 7 MPN/100ml and highest in the month of May-Jun, 2014 at 22 MPN/100ml. In comparison, the lowest concentration of Total Dissolved Solids was recorded in the month of May-Jun, 2013 at 226 mg/l and highest in the month of Nov-Dec, 2014 at 318 mg/l. In the case of Fixed Dissolved Solids lowest value was recorded in the month of Mar- Apr, 2013 at 84 mg/l and highest in the month of Mar-Apr, 2014 at 200 mg/l. While the highest value of Phosphate was recorded in the month of Jul-Aug, at 0.001 mg/l. Lowest concentration of Ammonical Nitrogen was observed at 0.07 mg/l in the month of Jan-Feb, 2013 and it was highest in the month of Mar-Apr, 2014 at 1.4 mg/l. During study period Boron Dissolved was highest in the month of Nov-Dec, 2014 at 0.23 mg/l. Higher values of Nitrate were estimated during Jan-Feb, 2014 (0.82mg/l) and the lowest Nov-Dec, 2014 (0.07mg/l). The lowest values of Potassium were recorded during Jan-Feb, 20130.4 mg/l and the highest value 2.7 mg/l in the month of Mar-Apr, 2014. The total Suspended solids content were recorded highest during Mar- Apr, 2014 (50 mg/l) and lowest Jul-Aug, 2014 (3.5 mg/l). The Lowest concentration of Fluoride was observed at 0.03 mg/l in the month of Jan-Feb, 2014 and it was highest in the month of Jul-Aug, 2014 at 0.70 mg/l. In present study the various kinds of pollutants in the water quality of the study sites and activity has been represented (Figures 1-4) of Pichola lake and Fateh Sagar.

Discussion

The use of water quality indices to verify the impact of Cordoba City (Argentina) on Suquia River [13]. water quality evaluation and trend analysis in selected watersheds of the Atlantic region of Canada [14]. An innovative index for evaluating water quality in streams [15]. Change (2005) reported spatial and temporal variations of water quality in the river and its tributaries in Seoul, South Korea, 1993–2002 [16]. The development of chemical index as a measure of instream water quality in response to land-use and land-cover changes [17]. That application of CCME Water Quality Index to monitor water quality: a case of the Mackenzie River Basin Canada [18]. Long-term water quality monitoring of the Sejnane reservoir in northeast Tunisia [19]. Assessed that application of two water quality indices as monitoring and management tools of rivers Case study: the Imera Meridiopnale river Italy [20]. Contributed application of physicochemical data for waterquality assessment of watercourses in the Gdansk municipality (South Baltic coast) [21]. Analysis of Ground Water Quality Parameters: A Review due to human and industrial activities, the ground water is contaminated [22]. This is the serious a problem at present. Thus the analysis of the water quality is very important to preserve and protect the natural eco system. The study of Physico-chemical and biological characteristics of this ground water sample suggests that the evaluation of water quality parameters as well as water quality management practices should be carried out periodically to protect the water resources.

Conclusion

The appraisal of lakes water in Udaipur’s lakes with respect to bacteriological and physicochemical pollution is of immense significance for improving the living standard and quality of life in this region. Therefore, monitoring of microbial contamination and pathogenic bacteria genera on a periodic basis is important and useful to arrive at measures that can act as indicators of water quality and pollution.

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