CONTEÚDO DE NUTRIENTES NA FOLHA DE ALFACE EM SISTEMA CONSORCIADO COM CENOURA SOB DIFERENTES DENSIDADES POPULACIONAIS

Abstract

The experiment was carried out to evaluate the nutrients content in leaves of lettuce intercropped with carrot in strip-intercropping under different planting densities of component crops. The experimental design used was of randomized complete blocks in a 4 x 4 factorial scheme with three replications. The treatments consisted of the combination of four lettuce-planting densities (40%, 60%, 80% and 100% of the recommended sole crop density - RSCD) with four carrot-planting densities (40%, 60%, 80% and 100% of the RSCD). Evaluations for P, Na, Ca, Mg, and K contents were made in the lettuce leaves. There was a significant interaction between lettucedensities and carrot-densities on P content in lettuce leaves. Higher contents of Na and Ca (58.40 and 7.58 mg/plant) were observed in the lettuce-densities of 52% and 47% of the RSCD. The contents of Na and K held constant with increasing carrot-densities. Higher contents of Mg (30 and 15 mg/plant) were observed in the density of 40% of the RSCD both in lettuce and carrot crop.