Uso de abonos verdes para mejorar los suelos arroceros de la Mojana en Colombia = Green manure crops : an alternative for improving the yielding capacity of the soils in the rice growing system of the Mojana region

By:

Sánchez, Carlos

Contributor(s):

Material type: Article

ArticleLanguage: Spanish Description: 29(1):14-18Subject(s): LOC classification:

70360

In: Suelos Ecuatoriales (Colombia)Summary: El estudio demostró que las leguminosas evaluadas se adaptan bien: el fríjol caupí presentó la más baja cantidad de materia seca acumulada, pero obtuvo la mejor respuesta en producción de arroz; la Crotalaria sobresalió por su alta producción de materia seca, control de malezas y por su efecto en el rendimiento de arroz, comprobando que se pueden lograr ahorros importantes de fertilizante nitrogenado y con aumento de rendimiento, lo que representa una mayor rentabilidad del cultivo. Sin embargo la cuantificación de la mejora en propiedades físicas y biológicas del suelo debe ser evaluada durante varios ciclos de cultivo.Summary: Within the Mojana region, in the Caribbean coast of Colombia, the main agricultural commodity is rice (Oryza sativa) grown in compacted, low fertility soils with high water tables and without crop rotation. This situation has brought about an ever increasing degradation. Although the use of green manure crops is widely known to be a good reclamation practice for degraded soils, it is not know in this region. The aim of this project is to evaluate some bean varieties as green manure crops, namely Vilna unguiculata, L. Walp; Mucuna deeingianum, L.; Canavalia ensiformis, L. and Crotalaria spectabilis. These varieties were selected due to their high dry mater production, adaptability to the region's soil and-climatic conditions, capacity for improving the yielding capacity of soils and therefore improve rice yields. Twelve 1,000 m2 plots were sown at the beginning of the dry season in 1996 at two different locations with a split-plot design with three repetitions. The green manure crops were ploughed in twice with a trailer plough. At the beginning of the rainy season rice was sown (Oryzica 1) each plot with three different nitrogen levels (0, 30 and 60 kg/ha). The four leguminous crops adapted well to the local conditions but Crotalaria spectabilis stood out due to its dry matter accumulation, better weed control and notorious effect on rice yield.

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Item type	Current library	Collection	Call number	Copy number	Status	Date due	Barcode	Item holds
Journal Article	CIAT Library Journal Collection	Journal Collection		c.1	Not For Loan (Restricted Access)

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El estudio demostró que las leguminosas evaluadas se adaptan bien: el fríjol caupí presentó la más baja cantidad de materia seca acumulada, pero obtuvo la mejor respuesta en producción de arroz; la Crotalaria sobresalió por su alta producción de materia seca, control de malezas y por su efecto en el rendimiento de arroz, comprobando que se pueden lograr ahorros importantes de fertilizante nitrogenado y con aumento de rendimiento, lo que representa una mayor rentabilidad del cultivo. Sin embargo la cuantificación de la mejora en propiedades físicas y biológicas del suelo debe ser evaluada durante varios ciclos de cultivo.

Within the Mojana region, in the Caribbean coast of Colombia, the main agricultural commodity is rice (Oryza sativa) grown in compacted, low fertility soils with high water tables and without crop rotation. This situation has brought about an ever increasing degradation. Although the use of green manure crops is widely known to be a good reclamation practice for degraded soils, it is not know in this region. The aim of this project is to evaluate some bean varieties as green manure crops, namely Vilna unguiculata, L. Walp; Mucuna deeingianum, L.; Canavalia ensiformis, L. and Crotalaria spectabilis. These varieties were selected due to their high dry mater production, adaptability to the region's soil and-climatic conditions, capacity for improving the yielding capacity of soils and therefore improve rice yields. Twelve 1,000 m2 plots were sown at the beginning of the dry season in 1996 at two different locations with a split-plot design with three repetitions. The green manure crops were ploughed in twice with a trailer plough. At the beginning of the rainy season rice was sown (Oryzica 1) each plot with three different nitrogen levels (0, 30 and 60 kg/ha). The four leguminous crops adapted well to the local conditions but Crotalaria spectabilis stood out due to its dry matter accumulation, better weed control and notorious effect on rice yield.