
10 Jan 2024
Water quality increasingly important, including in hnt
There are quite a few plant diseases that cause problems in substrate and water. When gas is used more sparingly, under lower temperatures, the crop can become more susceptible to the weakness parasite Pythium or even more serious pathogenic fungi and bacteria. Did you know that when a crop suffers from virus that the root system also often becomes more susceptible to other diseases? Storage of water has many preconditions. That applies to underground storage, storage in a basin or in a silo, covered or uncovered. Each form has its advantages and disadvantages. Realise that if you do not use enough fine filters, that will obviously require more detergent in the water. If, for instance, rainwater from the basin is not filtered sufficiently first, some of the peroxide in the water will react with the organic material from the rainwater alone. So look carefully where you can use extra filter, and extra fine filters (25 - 50 mu) to rid the water of contaminants. Rinse water from sand - and other filters usually goes to the dirty water or drain silo. Make sure there is at least one cloth filter, and preferably a finer filter, in between to prevent dirt from entering the silo. Ensure that water in daily supply or clean drain water silos does not remain in storage for too long. If storage is not 100% needed, keep a lower maximum level so that refreshes are more frequent. Or keep the daily supply at a lower EC so that it too is refreshed more often. This is better for oxygen levels in storage, and prevents bacteria and fungi from growing to excessive levels. Monitoring microbiology in water is often done on the basis of counting bacteria and fungi, called germ counts in colony-forming units per ml. So that is counting live microbes in water. Even in disinfected water or when you co-dose a detergent in the drip water, we can measure germ counts that indicate which microbes survive this. For beneficial microbes, which for instance boost plant resilience, we also have packages that give insight into these organisms. Examples include fluorescent Pseudomonas, lactic acid bacteria, Trichoderma spp, Bacillus.
Nutrient analysis in water and crop
Besides monitoring for germ counts, there are several other analysis methods to determine water quality. For instance, regular monitoring of nutrients in water or soil provides the best control options in your crop. We carry out analysis for nutrients in water under ISO accreditation, ensuring the accuracy and reliability of measurements. For direct crop management or in case of deficiency or excess symptoms, we can measure nutrients in the crop. We do this via leaf analysis in juice or in dry matter.