Resumo

LOPEZ MARTINEZ, JD et al. Cotton production with high sowing densities using organic fertilization. Phyton (B. Aires) [online]. 2014, vol.83, n.2, pp.237-242. ISSN 1851-5657.

The Laguna Region located in the states of Durango and Coahuila, Mexico, is the main cow milk production region of Mexico. Here there are about 500000 heads of cattle. This region produces about 1.2 million tons of cattle manure annually, which allows raising the possibility of their use in agriculture. Treatments evaluated in this study were: plant density (120000 and 240000 plants/ha), solarized cattle manure (0, 40, 80, 120 t/ha), and an additional chemical treatment of 120-60-00 kg/ha of nitrogen, phosphorus and potassium, respectively. A randomized block design with a strip arrangement was used. Three replicates were used per treatment. The objective of this study was to determine the solarized dose cattle manure and the best planting density in cotton production during the phenological development of the crop. The evaluated variables were: yield, soil moisture and temperature, and fber quality. The results indicated that the highest yield was for treatment of 80 t/ha with 120000 plants/ha. The highest temperature occurred at 0-7.5 cm soil depth in the dose of 120 t/ha, with a mean of 37.75 °C.

Palavras-chave : Soil fertility; Solarization; Narrow furrows.

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