Applications in sustainable production

Abstract

Capsicum plants grown under controlled conditions underwent crossed fertilization with N (four levels) and K (three levels) totalling 12 combination of NK dosages. The plants were sampled throughout their growth cycle and the leaves were analyzed to measure total and soluble Ca and Mg, and their fractions. Soluble Mg showed its lowest leaf level in the treatment N 4 K 3 , whereas the highest value was obtained at N 1 K 3 . Total Mg has the maximum leaf levels at N 1 K 2 , whereas the lowest levels occurred in the treatment N 2 K 1 . The various fractions of Mg showed different degrees of importance and in the present study the order of importance was:Pectate-Mg<Residual-Mg<Organic acid anion-Mg<Organic anion-Mg<Chlorophyll-Mg.