Molibdênio via semente e nitrogênio em cobertura no feijoeiro irrigado em solo de cerrado

• Autor(a) principal: Biscaro, Guilherme Augusto
• Data de Publicação: 2009
• Outros Autores: Goulart Junior, Sidney Antonio Roseiro, Soratto, Rogério Peres, Freitas Júnior, Nasir Augusto de, Motomiya, Anamari Viegas de Araújo, Calado Filho, Gilmar Cordeiro
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UFLA
• Texto Completo: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000500012; http://repositorio.ufla.br/jspui/handle/1/7024
• topic: Phaseolus vulgaris; Adubação de cobertura; Feijão - Nutrição mineral; Molibdato de amônio; Sidedressing fertilization; Beans - Mineral nutrition; Ammonium molybdate

Nitrogen is the most required nutrient by common bean and its metabolism depends on the molybdenum supply. The objective of this work was to evaluate the effect of the molybdenum applied to seeds as well as the effect of sidedressing nitrogen on agronomic characteristics of irrigated common bean, cultivar BRS Pontal, grown on Typic Quartzipsamment, in Cassilância county, Mato Grosso do Sul State, Brazil. A randomized complete block design was used, in a 4x2 factorial array with four replications. The treatments were constituted of absence or presence of Mo (80g ha-1) applied to seeds, and four N doses (0, 30, 60, and 120 kg ha-1) applied 16 days after emergence, as urea. Molybdenum applied to seeds increased the relative chlorophyll index, number of pods per plant, mass of grains, and grain yield, mainly with high N-sidedressing rates. The N-sidedressing application up to the highest dose (120 kg ha-1) promoted a linear increase in the relative chlorophyll index, number of pods per plant, mass of grains and grain yield. Molybdenum applied to seeds increased the efficiency of N use by common bean.