Studies on the mineral nutrition of the cotton plant: V. effect of joint deficiencies on growth, aspect and chemical composition

Abstract

Symptoms of deficiencies of several macronutrients and binary combinations thereof were induced in the cotton plant. It was found that depending upon the particular combination the following picture developed: (a) individual symptoms are present according to the general pattern; (b) individual symptoms are present with a reversal of the general pattern with respect of distribution; (c) a combination of the individual symptoms shows up; (d) an individual symptom masks the other; (e) a different symptom develops. Chemical analysis of both upper and lower leaves has shown single and multiple effects depending upon the treatment considered.