Timing of nitrogen application on common bean cultivated after single corn or intercropped with palisade grass

Author(s)

Rogério Peres Soratto ^[1] ; Adalton Mazetti Fernandes ^[2] ; Cristiane Pilon ^[3] ; Carlos Alexandre Costa Crusciol ^[4] ; Emerson Borghi ^[5]

Affiliation

^[1] Universidade Estadual Paulista. Faculdade de Ciências Agronômicas. Departamento de Produção e Melhoramento Vegetal

^[2] Universidade Estadual Paulista. Faculdade de Ciências Agronômicas. Departamento de Produção e Melhoramento Vegetal

^[3] University of Arkansas. Crop, Soil, and Environmental Sciences Department

^[4] Universidade Estadual Paulista. Faculdade de Ciências Agronômicas. Departamento de Produção e Melhoramento Vegetal

^[5] Embrapa Pesca e Aquicultura

• Document type: Journal article
• Source: Pesquisa Agropecuária Brasileira; v. 48, n. 10, p. 1351-1359, 2013-10-00.

Abstract

The objective of this work was to evaluate the common bean response to N application timing, under no-tillage system, after single corn or intercropped with palisade grass. A randomized complete block experimental design was used in a split-plot arrangement, with four replicates. Plots consisted of: single corn crop or corn intercropped with palisade grass, in two summer cropping seasons precedent to common bean sowing. Subplots consisted of: 100 kg ha-1 N application in three times - before sowing, at sowing, and at side-dressing - and a control treatment without N application. Nitrogen fertilization on common bean increased leaf-N content, the number of pods per plant, and grain yield (33% in the average application timing), only in the cropping after single corn. By providing large mass production and by N cycling, the cultivation of palisade grass intercropped with corn reduced N requirement of common bean in succession, in comparison to previous sole corn cultivation. Early N application before or during common bean sowing time provides grain yield similar to the observed one in the side-dressing application. (AU)