The Definitive Guide to Soilless cultivation
The substrate Option was then saved at −20°C right up until the ammonium and nitrate contents had been analyzed With all the San++ Ongoing-Stream Analysator (Skalar Analytic GmbH, Erkelenz, Germany). Nitrate willpower was based on a reaction with hydrazinium sulfate, sulfanilamide and N-(one-naphthyl) ethylenediamine dihydrochloride which result