To estimate soil texture and water storage capacity for sprinkler irrigation and tillage management, soil surveys were conducted in the Ferké 1 and Ferké 2 sugar mill plantations in northern Ivory Coast. In Ferké 1, a 5-year observation experiment comparing reduced tillage to conventional tillage over a 28-hectare irrigated cane crop was also undertaken for yield optimization. After harvest or before to replanting, soil samples were taken at five different locations along two transects in each sugarcane field, which covered around 30-40 hectares and had 432 m long cane rows, yielding an average soil sample of 1.5-2 kg. The sugar company's soil laboratory measured physical parameters such as texture and water retention curves. The bulk of the soils tested were coarse-textured, with a lower to medium water storage capacity (70-89 mm) across 60 cm depth, corresponding to readily available moisture less than 60 mm in Ferké 1 and 85 percent in Ferké 2. Over four cropping seasons, no significant difference in cane yields due to tillage practises was seen, with the exception of the sugarcane plant crop. In comparison to decreased tillage (+3 t/ha), the yield decline from plant cane to first ratoon was quite considerable under conventional tillage (-16 t/ha). When compared to conventional tillage (83 t/ha), the second ratoon yielded even more cane (89 t/ha).
Author (S) Details
Crépin B. Péné
Department of Natural Sciences/Ivorian Sci. Arts & Cult. Acad. (ASCAD); School of STEM/Int. Univ. of Gd-Bassam (IUGB), Route de Bonoua, P.O. Box 564 Gd-Bassam, Ivory Coast.
Souleymane N’Diaye
Department of R&D, SUCAFCI/SOMDIAA Sugar Mills, 33 rue des Brasseurs, 01 P.O. Box 1967 Abidjan 01, Ivory Coast.
Chantal N’Guessan-Konan
Department of R&D, SUCAFCI/SOMDIAA Sugar Mills, 33 rue des Brasseurs, 01 P.O. Box 1967 Abidjan 01, Ivory Coast.
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