Differential Response of Some Tropical Soils to Additions of Organic Matter

Abstract

Data are presented in support of the hypothesis that additions of organic-matter sources to normal latosols with an open, porous structure are of rather doubtful value, while in heavy-textured nonlatosols of moderate fertility, but unfavorable physical condition, such additions may result in increased organic-matter levels. No increases were measured when latosols were treated with different quantities of sugarcane trash, filter-press cake, and velvet bean green manure. Definite increases were obtained from the same treatments in nonlatosols.