Produtividade de mamona irrigada com água de laticínio e adubação orgânica.

Abstract

The use of reuse water in agriculture has become an increasingly common practice, mainly because of the large amount of nutrients found in these waters. The culture of castor bean (Ricinus communis L.) has been gaining attention for being a Euforbiácea, resistant to adverse conditions of climate and soil, but demanding in fertility and should therefore significant amounts of nutrients for yield and for the synthesis of oil and protein. To evaluate the efficiency of wastewater from dairy and the influence of organic fertilization in the production of castor BRS Energy held an experiment in a protected environment with castor seedlings arranged in plastic pots with a capacity of 10 l. Four substrates were used (soil, humus, manure and goat manure) and two irrigation water qualities (artesian well water and wastewater of dairy water). The evaluation of the efficiency conditions of the culture was subjected realized through production variables: weight raceme, number of racemes, seed weight and seed number. The experimental design was completely randomized with a 4x2 factorial scheme, with four repetitions, totaling 32 experimental units. It was found that irrigation with wastewater from dairy contributed to the increase in BRS Energy castor production and the organic fertilizer that showed the best result was the manure, humus followed and finally the goat manure.