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Production of cabbage grown in pots containing legumes' root and shoot

Roots effect is not generally considered in studies assessing the performance of crops in response to green manuring. However, such effect can contribute to a better understanding of crop rotation. The aim of this study was to assess the effect of root and shoot of two legumes on the production of c...

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Bibliographic Details
Published in:Revista Ceres 2012-10, Vol.59 (5), p.689-694, Article 689
Main Authors: Vargas, Thiago de Oliveira, Diniz, Ellen Rúbia, Santos, Ricardo Henrique Silva, Almeida, Alysson Roberto de, Urquiaga, Segundo, Cecon, Paulo Roberto
Format: Article
Language:English
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Summary:Roots effect is not generally considered in studies assessing the performance of crops in response to green manuring. However, such effect can contribute to a better understanding of crop rotation. The aim of this study was to assess the effect of root and shoot of two legumes on the production of cabbage. The experiment was conducted in pots of 10 liters containing substrate of 2:1 soil/sand. The experiment was arranged in a factorial scheme (2x3 + 2) in a randomized block design with five replicates using two legume species (Crotalaria juncea L. and Canavalia ensiformis L), three plant parts (root, shoot, or whole plant), and two additional treatments (mineral fertilization with 100% and 50% of the recommended dose of N for growing cabbage). Pots with legume treatments received mineral fertilizer with 50% of the recommended dose of N for growing cabbage. The experimental plot consisted of a pot containing one plant of cabbage. Legumes were grown in pots and harvested at 78 days. The root biomass was determined in extra pots. Production was assessed using head fresh and dry weight. The application of the whole plant of both legume species reduced cabbage production. However, root or shoot of both legume species was equivalent to 50% of mineral N fertilization required for the cultivation of cabbage. Em estudos de avaliação do desempenho de culturas em sequência à adubação verde, geralmente não se considera o efeito das raízes dos adubos verdes. Entretanto, tais efeitos podem contribuir para maior entendimento científico dessa modalidade de adubação. O objetivo deste trabalho foi avaliar os efeitos da raiz e da parte aérea de duas leguminosas sobre a produção do repolho. O trabalho foi conduzido em vasos de 10 L de solo/areia, na proporção de 2:1. O experimento foi instalado em esquema fatorial (2x3) + 2, sendo duas espécies de leguminosas (Crotalaria juncea L. e Canavalia ensiformis L.), três partes das plantas (raiz, parte aérea ou planta inteira) e dois tratamentos adicionais (adubação mineral, com 100 e 50% da dose recomendada de N para a cultura do repolho), em blocos casualizados, com cinco repetições. Os vasos com os tratamentos de leguminosas receberam adubação mineral com 50% da dose recomendada de N para a cultura do repolho. A unidade experimental constou de um vaso com uma planta. As leguminosas foram cultivadas nos vasos e cortadas aos 78 dias. A massa das raízes foi determinada em vasos extras. A produção foi avaliada pelas massas das matéria
ISSN:0034-737X
2177-3491
2177-3491
0034-737X
DOI:10.1590/S0034-737X2012000500015