What is EC?
Electrical conductivity or “EC” is a measure of the concentration of “total salt” in a nutrient answer (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 resolution varies with temperature, so most nutrient answer analyses are performed at 20oC.
The higher the concentration of “total salt” within the substrate, the higher the EC. Inorganic fertilizer ions such as N, P, K, Ca, Mg, etc. are examples. Urea is an organic molecule and gained’t contribute to the EC of the solution 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 is dependent upon the crop and variety grown, the physiological stage of plant improvement and the prevailing environmental conditions inside and outside the greenhouse.
Why is it essential to watch EC?
The EC of the nutrient solution affects the expansion and growth of the plant. In the winter, larger EC is used because it limits water uptake. As a result, the cells in the plant do not elongate or “grow” an excessive quantity of. They stay smaller and have thicker, stronger cell partitions. The vegetation then look darker, shorter and have smaller leaves. In this case, the plant places comparatively more energy into the formation of flowers and fruits (a production reaction). If the EC is too low beneath poor light conditions (i.e. winter), the plant will produce an extreme amount of leaf progress and too little fruit development, and will subsequently be over-nourished.
Conversely, high EC under excessive mild situations (summer) will prohibit water uptake an extreme quantity of and thus restrict the plant’s capacity to chill itself by way of transpiration. As a outcome, the crop might be confused.
EC additionally affects yield and fruit quality. In basic, greater EC within the root zone environment results in lower yields and smaller fruit dimension. This is as a end result of the cells within the fruit absorb much less water, leading to lower recent weight. However, higher EC results in higher fruit taste. Therefore, a compromise have to be made between fruit high quality, yield, and the dietary and reproductive growth of the crop.
Therefore, it is essential to keep the right EC in the root zone environment (measured because the difference between slab EC and drip EC.) The value of EC varies for every crop sort and time of 12 months.
Monitoring EC within the slab
Monitoring EC in plates is a crucial part of weekly vitamin monitoring and must be performed day by day. For a meaningful and correct assessment, sampling ought to be performed in a number of representative plates. Sampling is simple by simply pushing a syringe into the plate and withdrawing a small quantity of nutrient resolution (100 ml), which is then positioned into the cup of the EC meter for direct reading. The EC values are calculated and plotted on a graph so that developments can be extra simply recognized.
Tips for accurate EC measurements with portable meters
Calibrate the EC meter periodically using a standard solution.
Check the battery status, low battery in portable EC meters is often the reason for errors.
Take measurements on the similar time every day in order 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?
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What is EC?
Electrical conductivity 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 answer analyses are performed at 20oC.
The greater the focus of “total salt” within the substrate, the higher the EC. Inorganic fertilizer ions such as N, P, K, Ca, Mg, and so forth. are examples. Urea is an organic molecule and will not contribute to the EC of the solution as a outcome 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 optimum plant growth is determined by the crop and variety grown, the physiological stage of plant growth and the prevailing environmental conditions inside and out of doors the greenhouse.
Why is it necessary to watch EC?
เกจวัดแรงดันน้ำ10บาร์ of the nutrient resolution affects the growth and improvement of the plant. In the winter, larger EC is used because it limits water uptake. As a outcome, 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 relatively extra energy into the formation of flowers and fruits (a manufacturing reaction). If the EC is just too low underneath poor gentle conditions (i.e. winter), the plant will produce an extreme quantity of leaf growth and too little fruit development, and will due to this fact be over-nourished.
Conversely, excessive EC underneath excessive light conditions (summer) will restrict water uptake too much and thus restrict the plant’s capacity to cool itself through transpiration. As a outcome, the crop shall be confused.
EC also impacts yield and fruit high quality. In basic, larger EC in the root zone surroundings results in lower yields and smaller fruit size. This is as a result of the cells in the fruit absorb much less water, leading to lower fresh weight. However, higher EC leads to better fruit flavor. Therefore, a compromise have to be made between fruit high quality, yield, and the nutritional and reproductive development of the crop.
Therefore, it could be very important maintain the correct EC within the root zone setting (measured because the distinction between slab EC and drip EC.) The worth of EC varies for every crop type and time of yr.
Monitoring EC within the slab
Monitoring EC in plates is a vital component of weekly nutrition monitoring and should be performed daily. For a significant and accurate assessment, sampling should be performed in multiple consultant plates. Sampling is straightforward by merely pushing a syringe into the plate and withdrawing a small amount of nutrient resolution (100 ml), which is then positioned into the cup of the EC meter for direct reading. The EC values are calculated and plotted on a graph in order that tendencies could be more easily identified.
Tips for accurate EC measurements with transportable meters
Calibrate the EC meter periodically utilizing a normal resolution.
Check the battery status, low battery in portable EC meters is often the trigger of errors.
Take measurements at the identical time every day in order that outcomes can be interpreted more simply.
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?