Manejo da irrigação no feijoeiro, cultivado em semeadura direta e convencional

• Autor(a) principal: Carvalho, José Joaquim
• Data de Publicação: 2014
• Outros Autores: Saad, João Carlos Cury [UNESP], Cunha, Fernando Nobre, Silva, Nelmício Furtado da, Teixeira, Marconi Batista
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.7127/rbai.v8n100198; http://hdl.handle.net/11449/140791
• topic: Productivity; Irrigation; Comparison of methods; Phaseolus vulgaris; Soil management; Produtividade; Irrigação; Comparação de métodos; Phaseolus vulgaris L; Manejo do solo

Brazil is the largest producer and consumer of common bean Phaseolus vulgaris L is currently the most cultivated in the world. Before mainly grown by family farmers, but the bean has been cultivated by farmers who have the most varied levels of technology, increase in productivity. The drought and excess water or soil, causes a direct effect on grain yield and in this sense it is observed that plant growth is a physiological process most sensitive to water deficit, so irrigation has a positive influence on plant productivity from that associated with the proper management of the same. In general, Sao Paulo state presents defined periods of dry and rainy seasons. During rainy season, rainfall distribution is irregular, decreasing the bean yield when the dry period coincides with the crop critical water stage. The objective of the study was to evaluate three irrigation scheduling methods: tensiometer, Class A Pan evaporation, and evapotranspiration estimated by Penman-Monteith equation, all of them combined with two soil management conditions: conventional and no-tillage. The bean sowing was accomplished on 09/29/2008 using cultivate BRS Pontal. Previously this experiment, black oats culture was cultivated in an area which was fallow for three years. The results showed that there was differences among irrigation scheduling methods in the conventional soil management and all treatments in this study showed significantly higher yields than the non-irrigated treatment. In the conventional soil management all irrigation scheduling methods provided larger applied water efficiency compared to no-tillage.