Production of primary biomass and sequestration of carbon with a high water efficiency : the comparative advantages of DMC cropping systems technology

Forest Francis, Raunet Michel, Lidon Bruno. 2010. Production of primary biomass and sequestration of carbon with a high water efficiency : the comparative advantages of DMC cropping systems technology. 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], 122-129. Regional Workshop on Conservation Agriculture, Phonsavan, Laos, 28 Octobre 2008/1 Novembre 2008.

Résumé : Whatever the cropping system adopted, bioclimatic conditions as sun radiation, temperature and rainfall, (spatial and temporal variability ) are soundly affecting crop photosynthetic activity and biomass production. With the climate change already emerging in south east Asia ( see El Nino impacts ), there is a necessity for looking at new agricultural practices in the view of adaptation to these new situations that farmers are going to face. This communication is dealing with the main agroclimatic and ecophysiological process that are involved in the biomass production in the case of the practice of no-till mulch based cropping systems DMC as already diffused with farmers by millions of ha in the world and beeing up to now under participative experimentation in south east Asia, mainly in Laos, Cambodia, Thailand and Vietnam in order to meet small farmers expectations. Main objective of this paper will be putting in evidence that sustaining high biomass production may be obtained by farmers through a fine tuned integrated management of the crop's biological microenvironment.

Classification Agris : F08 - Systèmes et modes de culture
L01 - Élevage - Considérations générales
P01 - Conservation de la nature et ressources foncières
P40 - Météorologie et climatologie

Auteurs et affiliations

• Forest Francis, CIRAD-PERSYST-UPR Couverts permanents (FRA)
• Raunet Michel
• Lidon Bruno, CIRAD-ES-UMR G-EAU (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/560106/)

Métriques

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