ISSN: 1659-2751



Evaluation of Mucuna pruriens and Crotalaria spectabilis as Vegetative Cover Crops for a Rice (Oryza sativa) Crop


The objective of this study was to evaluate two cover crops, Mucuna pruriens and Crotalaria spectabilis, for use in rice production during the fallow period in the province of Guanacaste, Costa Rica. In The evaluation parameters that were analyzed included the potential of these two cover crops to suppress weed growth over a period of 60 days and the identification of the weeds in the first 15 days after planting. In addition, the N contribution of aboveground biomass of the two crops was estimated and an analysis comparing the loss/benefit costs with a conventional system was determined. The specie M. pruriens performed better in the evaluated parameters and had a lower establishment cost, showing a better potential as an alternative production system for the province of Guanacaste.

Key words: fallow, aboveground biomass, legumes, weeds, N2 fixation, suppression.

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