Impact of DMC (Direct seeding on mulch cropping systems) on the soil macrofauna communities structure in Sakon Nakhon province, Thailand

Boyer Johnny, Tantachasatid Phakphoom. 2010. Impact of DMC (Direct seeding on mulch cropping systems) on the soil macrofauna communities structure in Sakon Nakhon province, Thailand. In : Investing in sustainable agriculture : the case of conservation agriculture and direct seeding mulch-based cropping systems. Proceedings of the Regional Workshop held in Phonsavan, Xieng Khouang Province, Lao PDR, 28th October - 1st November 2008. Chanphengxay Monthathip B. (ed.), Khamhung Anonth (ed.), Panysiri Khamkéo (ed.), Chabanne André (ed.), Julien Frédéric (ed.), Tran Quoc Hoa (ed.), Lienhard Pascal (ed.), Tivet Florent (ed.). Laos-MAF, NAFRI, CIRAD. Vientiane : Ministry of Agriculture and Forestry [Laos], Résumé, 145. Regional Workshop on Conservation Agriculture, Phonsavan, Laos, 28 Octobre 2008/1 Novembre 2008.

Résumé : Soil organisms are not just inhabitants of the soil, they are part of the soil, heavily influencing soil properties (chemical, physical and biological properties), all of which are essential for primary production and the decomposition of organic residues. The impact of the conversion of traditional agricultural practices into practices more sensitive to the soil protection was studied through the changes in the community structure of the soil macrofauna. Soil macrofauna are sensitive to land use changes and this may have implications to soil functioning. The presence of abundant and diverse communities of macro-invertebrates was thus considered as a factor of sustainability in agro-ecosystems. This work focused primarily on the effect of direct seeding in mulch cropping systems (DMC) on the soil macrofauna community in Sakon Nakhon Province, Thailand. Secondarily, it was also a question of seeing their impact on soil microflora through the study of the soil respiration. In comparison with the conventional practice (ploughed bare soil) and the natural ecosystem (degraded forest), we observe globally an increase of the total mean density and biomass of the soil macrofauna under DMC systems. The strong observed densities are mainly due to the presence of the social insects. Differences are also observed in the respiratory activities of the soil. (Texte intégral)

Classification Agris : F08 - Systèmes et modes de culture
P34 - Biologie du sol

Auteurs et affiliations

• Boyer Johnny, CIRAD-PERSYST-UPR Couverts permanents (THA)
• Tantachasatid Phakphoom, Kasetsart University (THA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/560108/)

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