Adubação nitrogenada em cafeeiros com biomassa de feijão-de-porco
Data
2014-07
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Editor
Editora UFLA
Resumo
Objetivou-se, neste trabalho, avaliar o crescimento, a produção do cafeeiro e a transferência de N da leguminosa para a cultura, sem a interferência do consórcio. Cultivaram-se cafeeiros em vasos, adubados com parte aérea de feijão-de- porco, enriquecido com 15 N em casa de vegetação, nas doses de 146 e 584 g planta -1 , complementados com 30% de adubação mineral. O feijão-de-porco promoveu aumentos da produtividade do cafeeiro, dos teores de Ca 2+ , soma de bases, CTC efetiva e matéria orgânica do solo. Os teores foliares de N derivado do feijão-de-porco, cinco meses após a adubação, foram de 4,68% e 18,65% nas doses respectivas de 146 e 584 g planta -1 . O percentual foliar, de N derivado do feijão-de-porco, nos cafeeiros é proporcional à dose fornecida.
The aim of this study was to evaluate the growth and production of coffee tree and transfer of N from biomass legumes to coffee tree cropping without the interference of field consortium. Coffee trees were cultivated in pots, and after shoots of jack bean, enriched with 15 N into the pots in greenhouse, at doses of 146 and 584 g plant -1 , supplemented with 30% of mineral fertilizer. Jack-bean promotes increases coffee yield, the best index of soil quality (concentration of Ca 2+ , sum of bases, effective CEC, soil organic matter). Foliar N content derived from jack-bean, five months after fertilization, were 4.68% and 18.65% at the respective doses of 146 and 584 g plant -1 . The percentage of N derived from jack bean in coffee leaves is proportional to the applied dose.
The aim of this study was to evaluate the growth and production of coffee tree and transfer of N from biomass legumes to coffee tree cropping without the interference of field consortium. Coffee trees were cultivated in pots, and after shoots of jack bean, enriched with 15 N into the pots in greenhouse, at doses of 146 and 584 g plant -1 , supplemented with 30% of mineral fertilizer. Jack-bean promotes increases coffee yield, the best index of soil quality (concentration of Ca 2+ , sum of bases, effective CEC, soil organic matter). Foliar N content derived from jack-bean, five months after fertilization, were 4.68% and 18.65% at the respective doses of 146 and 584 g plant -1 . The percentage of N derived from jack bean in coffee leaves is proportional to the applied dose.
Descrição
Palavras-chave
Canavalia ensiformis (L.) DC., Adubação verde, 15N, Altura e diâmetro de copa
Citação
ARAUJO, J. B. S. et al. Adubação nitrogenada em cafeeiros com biomassa de feijão-de-porco Coffee Science, Lavras, v. 9, n. 3, p. 336-346, jul./set. 2014.