Knowledge and advice
News Alert | OPF Granular 11-0-5 will no longer be allowed in organic cultivation
Dear organic growers and dealers, To our regret, the permissibility of OPF Granular 11-0-5 in organic...
Read moreFerm O Feed and PHC merge into Den Ouden GrowSolutions
Ferm O Feed and Plant Health Cure (PHC) are going to merge. As of 30 January 2023, both business units...
Read moreResearch: Better start after using MycorDip
Many fruit farms in the province of Zeeland (The Netherlands) are completely dependent on rainfall for...
Read morePHC and Vitens join forces to improve Dutch soil, groundwater and crop quality
Plant Health Cure (PHC) -part of Den Ouden Groep- has signed an agreement with water company Vitens to...
Read moreBooklet – The application of our products per crop
A manual for the use of PHC products during the season for all kind of crops. Link to PDF-file: P...
Read moreDownload files – Cultivation programs, brochures & more
On this page you can download our general documentation. Our price list is available on request for...
Read moreNatural defenses through jasmonic acid and salicylic acid
The natural defense system of plants is genetically determined property. Partly due to the production...
Read moreAmino acids, the building blocks of life on Earth
There are more than 500 different amino acids on Earth. About 23 amino acids are essential for the growth...
Read moreScience magazine “The littlest farmhands”
Scientists are discovering thousands of microbes that help plants survive and thrive. Could these symbionts...
Read moreDrought: the importance of foliar fertilizing and mycorrhiza
During prolonged drought, roots that grow on the surface show the first signs of desiccation. The plant...
Read moreEverything about foliar feeding & fertilization.
In discussions about foliar feeding, the question often arises whether this cultivation measure makes...
Read moreFulvic Acid, the mobilizer of nature
Fulvic acid is one of the 3 components of humus and arises during the digestion of plants by micro-organisms....
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