Written Paper

Recovery of soil fertility in three livestock production agroecosystems  [2009]

Baños, R., Instituto de Investigaciones de Pastos y Forrajes Echeverría, J.C., Instituto de Investigaciones de Pastos y Forrajes Arzola, J., Empresa Pecuaria Genética Niña Bonita Ramírez, J., Estación Experimental de Pastos y Forrajes de Villa Clara et al.

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Changes in the fertility indicators in three types of soils (lixiviated red ferrallitic, ferruginous nodular Gley and grayish brown) which are representative for livestock production were evaluated using two samplings one carried out in 1984 and the other in 2004. Throughout this period acidity increased by 0.6-0.9 units in all soils, organic matter (OM) content was reduced between 0.4 to 1.1 %, the cationic interchange and the base interchange capacity also decreased in a range of 2.7 to 4.5 cmol.kg-1. Later, in the dairy units where this study was conducted, recycling nutrient practices were introduced through the production and application of worm humus and faeces, forage and crop residues compost, inoculation of arbusculares mycorrhizal fungi in the pasture, forage and seasonal crop sowings as well as the introduction of legume trees for animal feeding during there years. When the soils in the same points were again analyzed, a slight recovery of the fertility indicators was observed (+ 0.1 to 0.2 +0.24 to 0.38% of OM, 0.4 to 0.6 cmol.kg1 for the cationic interchange, 0.1 to 0.8 for the base interchange capacity). Results demonstrate the possibility of stopping the fertility degradation in cattle rearing soils and to the recovery with the introduction of the agroecological practices used in the present study.

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Ciencia y Tecnología Ganadera

ISSN : 1998-3050