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Agricultura Técnica

versión impresa ISSN 0365-2807

Resumen

YONATHAN, Redel; RUBIO, Rosa  y  BORIE, Fernando. Effect of Addition of Crop Residues and Mycorrhizal Fungi on Wheat Growth and the Chemical and Biological Parameters of an Andisol. Agric. Téc. [online]. 2006, vol.66, n.2, pp.174-184. ISSN 0365-2807.  http://dx.doi.org/10.4067/S0365-28072006000200008.

Among the diverse agro-technological practices applicable to low-input investment agricultural systems, the additions of plant residues to soils as a nutrient source, and the appropriate management of arbuscular mycorrhizal (MA) symbiosis, are being worldwide considered. Therefore, the main objective of this study was to test the application effect of two crop residues and mycorrhizal inoculation on wheat (Triticum aestivum L.) plants growing in an acidic soil (Typic Distrandepts) and some chemical and biological soil parameters. Both, lupine (Lupinus albus L.) and wheat residues were added to soil at equivalent rates of 6 Mg ha-1, and wheat cv. Otto was sown above, with and without the inoculation of a native strain of exogenous MA fungi (Glomus etunicatum CH 110). Organic amendments significantly increased dry matter yield by 50-60% and mineral acquisition by wheat plants near up to 100%. The wheat residues increased soil pH and P availability, while the lupine residues enhanced MA colonization from 49 to 61%. The inoculation of an exogenous MA fungus decreased the mineral acquisition, especially Al, which might contribute to reducing toxicity problems in acidic soils.

Palabras clave : crop residues; arbuscular mycorrhiza; mineral acquisition; acidic soil.

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