Crescimento do pinhão manso em segundo ciclo sob irrigação com água residuária e adubação orgânica.

Abstract

We evaluated the influence of irrigation with treated sewage effluent and fertilizer with castor meal on growth of Jatropha plants. For this we conducted the experiment in drainage lysimeters arranged outdoors in Research Program Sanitation - PROSAB in Campina Grande, PB. The experimental design was completely randomized blocks in distribution 2 x 4 factorial with four replications, and the factors wastewater and public water supply used for irrigation and four nitrogen levels (50, 100, 150 and 200 kg N ha - *), taking as the source of castor meal. The evaluations were initiated at 126 days after the pruning of plants, being held every 42 days, which were measured in height and stem diameter of jatropha. It was observed that the quality of water used in irrigation influenced variables. The plant height showed effect of different doses of nitrogen in contrast with the stem diameter.