ISSN 2375-088X
African Journal of Soil Science ISSN 2375-088X Vol. 12 (4), pp. 001-009, April, 2025. Available online at www.internationalscholarsjournals.org © International Scholars Journals
Full Length Research Paper
Soil Chemical Characteristics Under Color Cotton Cultivation with Wastewater Irrigation in Brazil's Arid Climate
Carlos Alberto Vieira de Azevedo1, Roberto Vieira Pordeus2*, Wagner Walker de Albuquerque Alves1, José Dantas Neto1, Vera Lúcia Antunes de Lima1 and Márcia Rejane de Queiroz Almeida Azevedo3
1Department of Agricultural Engineering, Federal University of Campina Grande, Av. Aprígio Veloso, 882, Bodocongó,
CEP 58109970, Campina Grande -PB, Brazil.
2Department of Environmental Sciences, Federal Rural University of the Semi-arid, Av. Francisco Mota, 572, Mossoró-
RN - CEP: 59.625-900, Brazil.
3Center of Agrarian and environmental Sciences, Paraíba State University, Lagoa Seca – PB, CEP 58109-115, Brazil.
Received 27 July, 2024; Accepted 18 November, 2024
Abstract
Research found the effect of treated wastewater on chemical properties of the soil cultivated with cotton. The soil fertility was studied by using a randomized blocks experimental design 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); while for the soil salinity, it was also used the experimental design in randomized blocks, but in factorial scheme (4 x 3) with three repetitions, being the factors the same four treated wastewater depths used in the fertility study, and three times of soil sampling (before and after the irrigation and after the rainfall period). 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. However, the electrical conductivity, the sodium adsorption ratio and the contents of calcium, magnesium, sodium, chlorides of the soil saturation extract decreased after five months of rains, which totalized 646 mm.
Key words: Reuse, irrigation, soil.