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What is EC?

Electrical conductivity or “EC” is a measure of the focus of “total salt” in a nutrient solution (drip, plate or drain).
It is expressed as milliSiemens per linear centimeter (mS/cm) or microSiemens per linear centimeter (mS/cm), where 1mS = 1000µS. The conductivity of a given answer varies with temperature, so most nutrient solution analyses are performed at 20oC.
The higher the concentration of “total salt” in the substrate, the upper the EC. Inorganic fertilizer ions similar to N, P, K, Ca, Mg, etc. are examples. Urea is an organic molecule and will not contribute to the EC of the solution as a end result of it does not conduct electricity like calcium (Ca) ions or nitrates. Nitrogen (NO3-N) ions can.
Ec in crops

The EC required for optimum plant development is dependent upon the crop and selection grown, the physiological stage of plant development and the prevailing environmental conditions inside and outdoors the greenhouse.
Why is it essential to watch EC?

The EC of the nutrient answer impacts the growth and growth of the plant. In the winter, larger EC is used as a result of it limits water uptake. As a outcome, the cells within the plant do not elongate or “grow” too much. They keep smaller and have thicker, stronger cell walls. The crops then look darker, shorter and have smaller leaves. In this case, the plant puts relatively more power into the formation of flowers and fruits (a manufacturing reaction). If the EC is simply too low underneath poor light situations (i.e. winter), the plant will produce an extreme quantity of leaf growth and too little fruit development, and can therefore be over-nourished.
Conversely, high EC underneath excessive light circumstances (summer) will limit water uptake too much and thus limit the plant’s ability to chill itself through transpiration. As a result, the crop shall be careworn.
EC additionally affects yield and fruit quality. In basic, higher EC in the root zone setting leads to lower yields and smaller fruit measurement. This is as a outcome of the cells within the fruit take up less water, leading to decrease contemporary weight. However, https://independent.academia.edu/BoyerKragh in higher fruit flavor. Therefore, a compromise should be made between fruit quality, yield, and the nutritional and reproductive growth of the crop.
Therefore, it is necessary to keep the proper EC within the root zone surroundings (measured as the distinction between slab EC and drip EC.) The value of EC varies for each crop kind and time of 12 months.
Monitoring EC in the slab

Monitoring EC in plates is a crucial component of weekly nutrition monitoring and ought to be carried out daily. For a meaningful and correct assessment, sampling must be carried out in multiple consultant plates. Sampling is simple by simply pushing a syringe into the plate and withdrawing a small quantity of nutrient solution (100 ml), which is then placed into the cup of the EC meter for direct reading. The EC values are calculated and plotted on a graph so that developments could be more easily recognized.
Tips for accurate EC measurements with transportable meters

Calibrate the EC meter periodically using a regular answer.
Check the battery status, low battery in moveable EC meters is commonly the cause of errors.
Take measurements on the identical time each day so that outcomes may be interpreted more simply.
Store the meter in a cool, dry place.
Read more:
Conductivity: How to convert mS/cm to uS/cm

Difference between conductivity(EC) and TDS

What is residual chlorine?

What is turbidity?
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What is EC?

Electrical conductivity or “EC” is a measure of the concentration of “total salt” in a nutrient solution (drip, plate or drain).
It is expressed as milliSiemens per linear centimeter (mS/cm) or microSiemens per linear centimeter (mS/cm), where 1mS = 1000µS. The conductivity of a given solution varies with temperature, so most nutrient resolution analyses are carried out at 20oC.
The higher the focus of “total salt” in the substrate, the upper the EC. Inorganic fertilizer ions corresponding to N, P, K, Ca, Mg, and so on. are examples. Urea is an organic molecule and gained't contribute to the EC of the answer because it does not conduct electrical energy like calcium (Ca) ions or nitrates. Nitrogen (NO3-N) ions can.
Ec in crops

The EC required for optimal plant progress depends on the crop and selection grown, the physiological stage of plant development and the prevailing environmental circumstances inside and outdoors the greenhouse.
Why is it important to monitor EC?

The EC of the nutrient resolution affects the expansion and development of the plant. In the winter, greater EC is used because it limits water uptake. As a end result, the cells within the plant don't elongate or “grow” an extreme quantity of. They stay smaller and have thicker, stronger cell walls. The plants then look darker, shorter and have smaller leaves. In this case, the plant puts relatively extra vitality into the formation of flowers and fruits (a production reaction). If the EC is too low underneath poor mild circumstances (i.e. winter), the plant will produce too much leaf progress and too little fruit progress, and can subsequently be over-nourished.
Conversely, high EC beneath excessive gentle conditions (summer) will restrict water uptake too much and thus limit the plant’s ability to chill itself through transpiration. As a result, the crop shall be careworn.
EC additionally impacts yield and fruit high quality. In basic, larger EC within the root zone setting leads to decrease yields and smaller fruit measurement. This is as a result of the cells in the fruit take in less water, leading to decrease fresh weight. However, higher EC results in better fruit taste. Therefore, a compromise must be made between fruit quality, yield, and the dietary and reproductive development of the crop.
Therefore, it is important to keep the right EC in the root zone surroundings (measured as the difference between slab EC and drip EC.) The value of EC varies for each crop type and time of yr.
Monitoring EC in the slab

Monitoring EC in plates is an important part of weekly vitamin monitoring and ought to be performed every day. For a significant and accurate assessment, sampling must be performed in multiple consultant plates. Sampling is straightforward by merely pushing a syringe into the plate and withdrawing a small quantity of nutrient answer (100 ml), which is then positioned into the cup of the EC meter for direct studying. The EC values are calculated and plotted on a graph so that trends could be more simply identified.
Tips for correct EC measurements with transportable meters

Calibrate the EC meter periodically using a regular resolution.
Check the battery standing, low battery in transportable EC meters is usually the purpose for errors.
Take measurements on the similar time each day in order that results may be interpreted more easily.
Store the meter in a cool, dry place.
Read extra:
Conductivity: How to convert mS/cm to uS/cm

Difference between conductivity(EC) and TDS

What is residual chlorine?

What is turbidity?