Nutritrional disorder in bean crop as related to macronutrients, boron and zinc

Abstract

This study was carried out in aerated nutritive solution under greenhouse conditions, in Jaboticabal, São Paulo State (21^o 15’ 22’’ South and 48^o 18’ 58’’ West) aiming to evaluate the effect of the omission of macronutrients, boron and zinc on plant growth, production of dry matter, visual symptoms and nutritional status in common bean (Phaseolus vulgaris). The experiment was arranged in completely randomized design with nine treatments corresponding to the complete solution (control) and individual omission of N, P, K, Ca, S, Mg, B and Zn, with two replications. After thirty days of treatments, plant height, number of leaves, stem diameter, leaf area, leaf dry matter and leaf levels of macro and micronutrients were measured. The individual omissions of N, P, K and Ca were more limiting to plant growth variables and production of dry matter and resulted in morphological  alterations observed by the intrinsical visual symptoms of each element. The individual omission of the nutrients Mg, B and Zn in the nutrient solution were not limiting to plant growth up to 30 days of cultivation.