Efeito do nitrogênio e do lodo de esgoto na nutrição do feijoeiro
Authors: Lobo Thomaz Figueiredo , Grassi Filho Helio , Bull Leonardo Theodoro , Souza Flavia L. P. de 
Published: July 2015

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O objetivo deste trabalho foi verificar o efeito do N e do lodo de esgoto na nutrição do feijoeiro. O experimento foi conduzido na Fazenda Experimental São Manuel, pertencente à Faculdade de Ciências Agronômicas da UNESP de Botucatu. Foi adotado o delineamento experimental em blocos casualizados, constituídos por 6 tratamentos e 4 repetições assim definidos: T0 – sem adubação nitrogenada; T1 – adubação química nitrogenada de acordo com a necessidade da cultura para o estado de São Paulo; T2 – 50% adubação nitrogenada proveniente do lodo de esgoto e 50% na forma mineral; T3 – 100% adubação nitrogenada proveniente do lodo de esgoto; T4 – 150% adubação nitrogenada proveniente do lodo de esgoto; T5 – 200% adubação nitrogenada proveniente do lodo de esgoto. Os parâmetros avaliados foram os teores foliares e a exportação de nutrientes.<span style="mso-no-proof: yes;"> O aumento da dose de lodo influenciou nos teores foliares de Ca, P, Mg, Cu, Fe e Zn. A exportação de N, P, K, Ca, Mg, B, Cu, Fe, Mn e Zn influenciaram com o aumento da dose de lodo. O N não interferiu nos teores foliares. 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