What is EC?
เกจวัดแรงดัน10bar 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), where 1mS = 1000µS. The conductivity of a given resolution varies with temperature, so most nutrient solution analyses are carried out at 20oC.
The higher the focus of “total salt” in the substrate, the higher the EC. Inorganic fertilizer ions corresponding to N, P, K, Ca, Mg, and so forth. are examples. Urea is an natural molecule and will not contribute to the EC of the solution as a end result of it doesn’t 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 growth and the prevailing environmental conditions inside and outside the greenhouse.
Why is it essential to monitor 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 result, the cells in the plant don’t elongate or “grow” an extreme quantity of. They keep smaller and have thicker, stronger cell partitions. The vegetation then look darker, shorter and have smaller leaves. In this case, the plant puts relatively more vitality 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 too much leaf growth and too little fruit development, and will therefore be over-nourished.
Conversely, excessive EC underneath high light circumstances (summer) will limit water uptake an excessive quantity of and thus restrict the plant’s capability to cool itself via transpiration. As a outcome, the crop might be stressed.
EC additionally impacts yield and fruit high quality. In common, higher EC in the root zone surroundings leads to decrease yields and smaller fruit size. This is because the cells in the fruit absorb less water, leading to decrease contemporary weight. However, higher EC results in higher fruit flavor. Therefore, a compromise must be made between fruit high quality, yield, and the dietary and reproductive development of the crop.
Therefore, it is important to maintain the right EC in the root zone surroundings (measured as the distinction between slab EC and drip EC.) The value of EC varies for each crop sort and time of yr.
Monitoring EC within the slab
Monitoring EC in plates is an important element of weekly nutrition monitoring and should be performed daily. For a significant and accurate evaluation, sampling ought to be performed in multiple representative plates. Sampling is easy by merely 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 trends could be more simply 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 commonly the trigger of errors.
Take measurements at the same time every day so that results may be interpreted more simply.
Store the meter in a cool, dry place.
Read more:
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?
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), where 1mS = 1000µS. The conductivity of a given resolution varies with temperature, so most nutrient resolution analyses are performed at 20oC.
The larger the focus of “total salt” within the substrate, the higher the EC. Inorganic fertilizer ions corresponding to N, P, K, Ca, Mg, and so on. are examples. Urea is an organic molecule and won’t contribute to the EC of the answer as a result of 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 growth is dependent upon the crop and selection grown, the physiological stage of plant development and the prevailing environmental circumstances inside and out of doors the greenhouse.
Why is it essential to observe EC?
The EC of the nutrient answer affects the growth and development of the plant. In the winter, higher EC is used as a outcome of it limits water uptake. As a result, the cells within the plant do not elongate or “grow” an excessive quantity of. They stay smaller and have thicker, stronger cell walls. The vegetation then look darker, shorter and have smaller leaves. In this case, the plant puts comparatively more vitality into the formation of flowers and fruits (a manufacturing reaction). If the EC is merely too low under poor mild circumstances (i.e. winter), the plant will produce an excessive quantity of leaf development and too little fruit progress, and can due to this fact be over-nourished.
Conversely, high EC under excessive light circumstances (summer) will limit water uptake an excessive amount of and thus restrict the plant’s capacity to cool itself by way of transpiration. As a outcome, the crop will be stressed.
EC also impacts yield and fruit high quality. In general, greater EC in the root zone setting results in decrease yields and smaller fruit measurement. This is as a result of the cells within the fruit take up much less water, resulting in decrease fresh weight. However, greater EC results in better fruit taste. Therefore, a compromise have to be made between fruit quality, yield, and the nutritional and reproductive improvement of the crop.
Therefore, you will need to preserve the correct EC within the root zone environment (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 vital component of weekly diet monitoring and ought to be performed every day. For a meaningful and accurate assessment, sampling ought to be carried out in a number of consultant plates. Sampling is easy by simply pushing a syringe into the plate and withdrawing a small quantity of nutrient answer (100 ml), which is then placed into the cup of the EC meter for direct studying. The EC values are calculated and plotted on a graph so that developments may be more simply recognized.
Tips for correct EC measurements with moveable meters
Calibrate the EC meter periodically utilizing a regular solution.
Check the battery standing, low battery in portable EC meters is usually the reason for errors.
Take measurements on the identical 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?