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), the place 1mS = 1000µS. The conductivity of a given solution varies with temperature, so most nutrient solution analyses are performed at 20oC.
The greater the focus of “total salt” in the substrate, the higher the EC. Inorganic fertilizer ions similar to N, P, K, Ca, Mg, etc. are examples. Urea is an organic molecule and received’t contribute to the EC of the solution as a result of 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 growth depends on the crop and variety grown, the physiological stage of plant improvement and the prevailing environmental conditions inside and out of doors the greenhouse.
Why is it necessary to observe EC?
The EC of the nutrient resolution impacts the growth and improvement of the plant. In the winter, higher EC is used because it limits water uptake. As a outcome, the cells in the plant don’t elongate or “grow” too much. 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 energy into the formation of flowers and fruits (a production reaction). If the EC is simply too low beneath poor gentle situations (i.e. winter), the plant will produce too much leaf development and too little fruit development, and can due to this fact be over-nourished.
Conversely, excessive EC under excessive mild conditions (summer) will prohibit water uptake too much and thus restrict the plant’s ability to cool itself via transpiration. As a end result, the crop will be stressed.
EC also impacts yield and fruit high quality. In common, higher EC within the root zone environment results in lower yields and smaller fruit measurement. This is as a end result of the cells in the fruit take in less water, resulting in decrease fresh weight. However, larger EC leads to higher fruit taste. Therefore, a compromise should be made between fruit quality, yield, and the dietary and reproductive growth of the crop.
Therefore, it is important to keep the correct EC within the root zone setting (measured because the difference between slab EC and drip EC.) เพรสเชอร์เกจ of EC varies for every crop sort and time of 12 months.
Monitoring EC within 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 accurate assessment, sampling must be performed in a quantity of representative plates. Sampling is easy by simply pushing a syringe into the plate and withdrawing a small amount of nutrient resolution (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 in order that trends may be extra easily recognized.
Tips for correct EC measurements with moveable meters
Calibrate the EC meter periodically utilizing a standard resolution.
Check the battery standing, low battery in transportable EC meters is often the purpose for errors.
Take measurements on the same time every day in order that outcomes can be interpreted extra easily.
Store the meter in a cool, dry place.
Read extra:
Conductivity: How to transform 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?
ไดอะแฟรม or “EC” is a measure of the focus of “total salt” in a nutrient resolution (drip, plate or drain).
It is expressed as milliSiemens per linear centimeter (mS/cm) or microSiemens per linear centimeter (mS/cm), the place 1mS = 1000µS. The conductivity of a given answer varies with temperature, so most nutrient resolution analyses are performed at 20oC.
The larger the concentration of “total salt” within the substrate, the higher the EC. Inorganic fertilizer ions corresponding to N, P, K, Ca, Mg, and so forth. are examples. Urea is an organic molecule and won’t contribute to the EC of the solution because it doesn’t conduct electricity 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 variety grown, the physiological stage of plant development and the prevailing environmental circumstances inside and out of doors the greenhouse.
Why is it necessary to watch EC?
The EC of the nutrient resolution impacts the growth and development of the plant. In the winter, larger EC is used as a end result of it limits water uptake. As a end result, the cells in the plant do not elongate or “grow” too much. They keep smaller and have thicker, stronger cell walls. The plants then look darker, shorter and have smaller leaves. In this case, the plant puts comparatively extra energy into the formation of flowers and fruits (a manufacturing reaction). If the EC is just too low under poor mild circumstances (i.e. winter), the plant will produce too much leaf development and too little fruit growth, and can therefore be over-nourished.
Conversely, high EC underneath high gentle conditions (summer) will prohibit water uptake too much and thus restrict the plant’s capacity to cool itself through transpiration. As a outcome, the crop will be stressed.
EC additionally impacts yield and fruit quality. In general, higher EC in the root zone surroundings results in lower yields and smaller fruit size. This is because the cells in the fruit take up less water, resulting in decrease contemporary weight. However, larger EC results in better fruit flavor. Therefore, a compromise should be made between fruit quality, yield, and the dietary and reproductive growth of the crop.
Therefore, it may be very important keep the correct EC in the root zone surroundings (measured as the difference between slab EC and drip EC.) The value of EC varies for each crop kind and time of year.
digital pressure gauge in the slab
Monitoring EC in plates is a crucial part of weekly nutrition monitoring and should be carried out day by day. For a significant and accurate assessment, sampling should be performed in a number of representative plates. Sampling is easy by simply pushing a syringe into the plate and withdrawing a small amount of nutrient resolution (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 in order that developments can be more easily recognized.
Tips for accurate EC measurements with portable meters
Calibrate the EC meter periodically using a regular answer.
Check the battery standing, low battery in transportable EC meters is usually the cause of errors.
Take measurements at the similar time every day so that outcomes could be interpreted extra 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?