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Fertirrigation with Treated Wastewater: Effect on Soil Fertility

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

Citation:  2007 ASAE Annual Meeting  072076.(doi:10.13031/2013.24068)
Authors:   Wagner Walker de Albuquerque Alves, Carlos Alberto Vieira de Azevedo, José Dantas Neto, José Tavares de Souza
Keywords:   Reuse, Irrigation, Soil

This research was developed under field conditions, in the Sewer Treatment Station of the Company of Water and Sewers of Paraíba state, in Campina Grande city, Brazil, with the objective of verifying the effect of treated wastewater on chemical properties of the soil cultivated with cotton. The randomized blocks experimental design was used in factorial scheme (4 x 2) with three replications, whose factors were four treated wastewater depths (278, 416, 554 and 692 mm) and two soil sampling times (before and after cultivation of colored cotton, with a rainfall of 89 mm during the crop cycle). After irrigation with effluent of stabilization pond and a rainfall of 89 mm, the contents of P, K+, Ca2+, H+ and the capacity of cationic change of the soil increased, while the contents of Na+, Mg2+ and the sodium exchangeable percentage decreased.

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