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- W1990495987 abstract "Visou-se, com o presente estudo, avaliar os efeitos de seis anos de adubação orgânica sobre as características químicas de um Neossolo Regolítico cultivado com batata. Os tratamentos de adubação orgânica foram: 1) esterco (15 t ha-1); 2) cultivo e incorporação da Crotalaria juncea L.; 3) combinação de metade da dose de esterco (7,5 t ha-1) com o cultivo e incorporação da Crotalaria juncea L. e 4) testemunha, sem fertilização. Os ensaios de adubação orgânica e cultivo da batata foram realizados no período de 1996 a 2003, com exceção de 1998 e 1999, devido à escassez de chuvas. Ao final de 2003 amostras de solo coletadas nas camadas de 0-20 e 20-40 cm de profundidade foram analisadas. A aplicação anual de esterco, combinado ou não com a crotalária, elevou os teores de CO, N e P totais, e Zn na camada de 0-20 cm de profundidade, e os teores de P e K extraíveis, Mg e B nas duas camadas avaliadas. O cultivo e a incorporação anual da crotalária não exerceram efeito significativo nos teores de nutrientes do solo. Os resultados sugerem que a utilização de doses menores de esterco, combinadas com a incorporação de adubos verdes pode garantir a manutenção da fertilidade do solo em longo prazo." @default.
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- W1990495987 date "2008-06-01" @default.
- W1990495987 modified "2023-10-18" @default.
- W1990495987 title "Mudanças na fertilidade de um Neossolo Regolítico após seis anos de adubação orgânica" @default.
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