1000 resultados para Milho - Pesquisa
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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.
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Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV
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Pós-graduação em Zootecnia - FMVZ
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Agronomic characteristics and commercial quality of popcorn maize cultivars. In order to identify popcorn cultivars that constitute a viable alternative For popcorn producers, an experiment was conducted using a randomized blocks experimental design with Five genotypes (BRS Angela, Zelia, IAC 112, IAC 12 and IAC TC-01) and four repetitions, during the 2003/2004 crop. The experiment was carried out with 60 cm spacing between lilies and density of 75 thousand plants per hectare. During the experiment, agronomic and commercial characteristics were evaluated, under field and laboratory conditions. The variety BRS Angela featured increased yield, followed by simple hybrids IAC, with Zelia (triple hybrid) showing lower yield. The simple hybrid IAC 12 showed the lowest commercial quality of popcorn. Grain production was positively associated with the number of grains per car and with the weigh of 1,000 grains, and negatively with the level of N(total) in grain. The commercial quality was negatively influenced by the weigh of 1,000 grains.