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Growth Analysis of Castor Oil Plant, Cultivar BRS 149 Northeastern, Under the Effect Irrigation Treated Wastewater

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2007 ASAE Annual Meeting  072071.(doi:10.13031/2013.23218)
Authors:   Josilda de França Xavier, Antonio Ricardo Santos de Andrade, Carlos Alberto Vieira de Azevedo, Napoleão Esberard de Macêdo Beltrão, Rogaciano Cirilo Bastita, Euler Soares Franco
Keywords:   irrigation, wastewater, castor oil plant

The objective of this research was to evaluate the levels and types of different treated wastewater from industry and their effects on the growth and development of Northeastern BRS 149 castor oil plant. The experiment was carried out at the greenhouse of the Cotton Research National Center CNPA/EMBRAPA, in Campina Grande city, Paraíba state, Brazil. The experimental design was in randomized block in a factorial scheme [(4x3) +3] with three repetitions, with the following factors: three types of wastewater and one of provisioning water (A1= IPELSA – Cellulose and Paper Industry; A2 = COTEMINAS; A3 = ILCASA and A4 = provisioning water), three levels of soil available water (N1 = 100%, N2 = 80% and N3 = 70% of the soil available water) and three controls for the three levels of soil available water, using provisioning water with NPK inorganic fertilizers (AC4), in which the source of nutrients were sulphate of ammonia (20%N), super phosphate triple (43% P2O5) and potassium chloride (60% K2O). In order to evaluate the growth, it was made biweekly measures during 135 days after planting, where the following variables were measured: height of plant (HP), diameter of steam (DS) and total foliar area (TFA). The four different types of water showed significant statistical differences, observed in the growth variables. It was observed that the three wastewater (A1, A2, A3), due to its high concentration of nutrients, increased all growth variables, comparing to provisioning water without fertilizer (A4). A statistical difference was observed among the four different types of water (A1, A2, A3, A4) and provisioning water AC4 with fertilizer.

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