Canavalia ensiformis (L): en propiedades químicas de un suelo fluvisol diferenciado

The objective of the study was to evaluate the effect of different Canavalia ensiformis management as a cover crop (CC) on the chemical properties of a differentiated Fluvisol soil. It was developed in a cooperative productive area, in the Santiago de Cuba municipality, under dry conditions. The treatments were established by attending a control that represented the spontaneous cover of the soil (fallow) and two treatments with Canavalia cover for 80 days: one without incorporating the soil, another incorporated and the last as permanent cover on the soil for 120 days. The fresh and dry biomass, the carbon of the biomass (CBiomass), the CBiomass integrated to the SOC, the ratio of Biomass - C - CO2 were evaluated, and the sequestered carbon and its subsequent capture in CO and TOC and content of nutrients. The results were positive in the improvement of the soil with respect to its initial condition, when the Canavalia cover is incorporated into the soil or is maintained permanently; the estimated carbon showed increases in the content of organic C and nutrients such as N, P, Ca and Mg in the soil.