Monitoring nutrient balance, pH & EC in the root zone
The composition of the nutrient solution should be appropriate to the needs of the crop. One of the benefits of using Grodan stone wool substrates is that the nutrient composition is under total control of growers. This is because stone wool is inert and does not interact with individual elements during the cultivation cycle. However the uptake of particular nutrients varies constantly with growth and fruit load therefore the nutrient balance, pH and EC in the root zone is also constantly changing. Regular analysis of this solution in combination with daily monitoring of EC and pH allows you to exercise complete control over crop nutrition and plant development during the entire cultivation cycle. This will not only help avoid serious mistakes (plant & fruit quality) but will also enable you to grow with more precision, optimizing the input of water and fertilizer and minimizing unnecessary flushing of drain water to the environment.