Molybdenum and nitrogen fertilization on bean crop in no tillage sistem

Abstract

Nitrogen is the most uptaken nutrient by common bean and its metabolism depends on molybdenum supply. The objective this work was to evaluate the common bean cropped in winter, in no tillage system and submitted to leaf molybdenum application (0, 40, 80 and 120g/ha), and nitrogen fertilization at sowing (0 and 20kg/ha) and at side dressing (0 and 70kg/ha). The experimental design utilized was a randomized complete blocks, in a factorial scheme 4x2x2 (molybdenum on leaf x nitrogen at sowing x nitrogen at side dressing), with four replications. The soil of experimental area was a typic acrustox. The parameters analyzed were: stand, nitrogen content in plants, plant dry matter, numbers of pods and grains per plant, grains per pods, hundred grains weight and grain yield. It was concluded that molybdenum application on leaf, nitrogen at sowing or at side dressing increase grain yield in common bean Perola cultivar. In the IAC Carioca - Eté cultivar there is no effect of molybdenum or nitrogen applicated.