A process for the preparation of a fungicide / bactericide material for hydroponic application, material so obtained and a method for protecting crops against fungi and / or bacteria in hydroponics.

摘要

PURPOSE:To produce the subject material capable of releasing silver ions in a culture solution and protruding water-cultured crops from fungi or bacteria by carrying silver (oxide) on a textile good or a polyurethane foam support under a supecified condition. CONSTITUTION:A textile good or a polyurethane foam is dipped in an aqueous solution containing SnCl2 and/or SnSO4 and HCl and/or H2SO4, and subsequently washed with water. The treated material is then dipped in an aqueous AgNO3 solution to obtain, e.g. a textile good carrying silver and/or its oxide. The obtained material can release a constant concentration of silver ions into a culture solution and protect hydroponically cultured crops from diseases.