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

Revista Ceres

Thiago De Oliveira Vargas²  Ellen Rúbia Diniz²  Ricardo Henrique Silva Santos²  Alysson Roberto De Almeida²  Segundo Urquiaga¹  Paulo Roberto Cecon¹ 

[1] ,Universidade Federal de Viçosa Departamento de Fitotecnia Viçosa Minas Gerais ,Brazil

关键词: green manure;    nitrogen;    Crotalaria juncea L;    Canavalia ensiformis L;    Brassica oleracea var. capitata L;    adubação verde;    nitrogênio;    Crotalaria juncea L.;    Canavalia ensiformis L.;    Brassica oleracea var. capitata L;   

DOI  :  10.1590/S0034-737X2012000500015

来源: SciELO

【 摘 要 】

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.

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