<b>Soil nitrogen and crop residues in bean development on no-tillage system in direct sowing</b> - DOI: 10.4025/actasciagron.v25i1.2447

Abstract

The aim of this study was to evaluate the side dressing nitrogen effect, in common bean, Phaseolus vulgaris L., on no tillage system under different crop residues. The used design consisted of randomized blocks in a split-plot scheme with four replications. Crop residues, number of days for the bloom, dry matter weight, stand, number of pod and seeds per plant, number of seeds per pod, weight of 100 seeds, N in leaves and seeds and yield were evaluated. The results showed that: the Crotalaria juncea and black velvet bean (Mucuna aterrima) proved the best crop residue, and the Crotalaria juncea had the highest dry matter weight; there was not crop residues influence under common bean yield; the side dressing nitrogen application increased the production. However, even where there was not N application, the yield was higher to 2000 kg ha^-1, therefore an economic analysis is an important factor in making decision.