Objetivou-se com este trabalho avaliar o crescimento da mamoneira cultivada em solo artificialmente compactado e adubado com torta de mamona. O experimento foi conduzido em delineamento em blocos casualizados, em esquema fatorial (4 x 4), com três repetições, sendo os fatores: quatro nÃveis de densidades do solo (1,4; 1,6; 1,8 e 2,0 kg dm-3) e quatro doses de torta de mamona (0,0; 2,0; 4,0 e 6,0 t ha-1). A densidade do solo influenciou negativamente o crescimento das plantas de mamoneira. Ao final do experimento, a torta de mamona como fertilizante orgânico promoveu incrementos apenas na área foliar, contribuindo, assim, para reduzir o efeito negativo da densidade do solo sobre esta variável.
Palavras chave: Ricinus communis L; sustentabilidade ambiental; biodiesel
INITIAL GROWTH OF CASTOR BEANS, BRS PARAGUAÃU, IN COMPACTED SOIL AND WITH ORGANIC MANURING
ABSTRACT
The objective of this work was to evaluate the growth of the castor beans cultivated in soil artificially compacted and fertilized with castor oil cake. It was conducted an experiment with randomized blocks design, in factorial scheme (4 x 4), with 3 repetitions, having the factors: four levels of soil density (1.4, 1.6, 1.8 and 2.0 kg dm-3) and four doses of castor bean cake (0.0, 2.0, 4.0 and 6.0 t ha -1). The soil density influenced significantly the growth of castor beans plants. At the end of the experiment, the castor oil plant pie as organic fertilizer promoted increments just in the leaf area, contributing to reduce the negative effect of the soil density on this variable.
Keywords: Ricinus communis L; environmental sustentability; biodiese