Short-term effect of no-tillage on profitability, soil fertility and microbiota: a case study in a tropical ecosystem (altitude plains, Lao PDR)

 acte de colloque | |    

Macro aggregates disruption, enhanced soil aeration and mixing of residues into the soil induced changes in microbial communities’ activity and organic C losses.

Mots-clés : macrofaune du sol, Les Hautes Terres , MOS, scv, Biologie des sols

Regional conservation agriculture project proposal in degraded annual cropping systems areas in South East Asia

 acte de colloque | |    

Proposition of network of Conservation Agriculture in Southwest Asia

Mots-clés : érosion, petite agriculture familiale

Changes in soil aggregation and soil biology

 présentation PPT | |    

Changes in soil aggregation, soil water-holding capacity and soil biological activity under no-till systems and cropping sequences in the Lao PDR

Mots-clés : maïs, macrofaune du sol, Riz, Agriculture de conservation, brachiaria, MOS, propriétés physico-chimiques du sol, Biologie des sols

A farmer-group based approach linking research and development for the promotion of Conservation Agricultural in the Lao PDR.

 acte de colloque | |    

A holistic approach, based on a permanent link between research and development, has been implemented by the Lao National Agro-Ecology Programme (PRONAE – PCADR,NAFRI), the Rural Development Project of the four southern districts of Xayabury province (PASS – PCADR, LCG), and the Sector-based Programme on Agroecology (PROSA, MAF), in partnership with the department of agriculture and forestry of Xayabury and Xieng Khouang provinces.

Mots-clés : Agriculture de conservation, diffusion, petite agriculture familiale, scv

(poster) Direct seeding Mulch based Cropping (DMC) in Lao PDR (2)

 poster | |    

Methodology of DMC. A Holistic Approach to Generate, Adapt, Validate andDisseminate Technologies with Smallholders

Mots-clés : recherche-action, morphopédologie, diffusion, méthodologie, petite agriculture familiale, gestion du sol, scv, Intégration agriculture élevage

GMS Agricultural Information network Promoting public private partnerships in sharing agricultural information Communication learning and training in Agroecology The AGRIMEK initiative Concept working note

 rapport de mission/expertise | |    

Formation d'un réseau Agroécologie pour l'Asie du Sud-Est pour réunir les données, organiser des ateliers et visites des terrains et créer un site internet. Creation of a netwwork in agroecology in order to organize workshop, meetings, fields visits and website.

Mots-clés : formation, écosystèmes cultivés, diffusion, scv, Socio-économie, politique publique

Impact of technologies and market access on natural resources and farming systems Southern Xayaburi province, Lao PDR

 fiches techniques/pédagogiques | |    

Traditional farming systems have drastically changed over the last fifteen years in southern Xayabury province through considerable agricultural development based on rainfed cash crops production such as maize, rice-bean (Vigna umbellata), peanut, Job's tears (Coîx lacryma), black cowpea (Vigna unguiculata) and sesame. This development depends mainly on local market accessibility, transfer of technologies from Thailand and financial capacities of local traders (inputs, heavy mechanization and technical skills from Thailand).

Mots-clés : Riz, agriculture durable, érosion, scv, Socio-économie

Direct Seeding Mulch-Based Cropping Systems - A Holistic Research Approach implemented in Northern Laos

 Document de projet | |    

Farming systems throughout the Lao PDR have changed drastically over the last 15 years due to a range of factors. In some areas where market forces are prevalent, shifting cultivation systems have given way to more conventional high-input agricultural systems. In other more remote areas, the traditional swidden system with long rotations has been put under pressure primarily due to modification of land access and increasing population pressure. In southern Xayabury in the Mekong corridor, where there is access to the Thai market, land preparation has become based on burning residues and ploughing on steep slopes. Because of the environmental and financial costs of land preparation, farmers are shifting to herbicides, which lead to chemical pollution, while crop residues and weed mulch are usually burned, thereby increasing mineral losses and erosion on bare soil. In mountainous areas such as Xieng Khouang Province, the rationale of shifting cultivation is collapsing as farmers use land for longer periods of cropping and return more frequently to each field. A holistic research approach has been implemented in Xayabury and Xieng Khouang to find direct seeding mulch-based cropping (DMC) systems that are compatible with farmers' strategies and which can be reproduced inexpensively on a large scale. The methodological framework, based on five main components, emphasises the process of adaptation and validation by farmer groups, meaning that priorities are defined by smallholders in light of the constraints of their farming systems and the overall environmental conditions.

Mots-clés : recherche-action, érosion, diffusion, systèmes agropastoraux, petite agriculture familiale, plante de couverture, scv, biomasse

Implementing direct seeding techniques for the rainfed upland rice South of Sayaboury province - PDR Lao (poster)

 poster | |    

Implementing direct seeding techniques and rotations with cash crops for the upland rice system. Two main systems of direct-seeded rice were conducted are implemented : i) on former crop residues, ii) on former and cover crop(Brachiaria ruziziensis).

Mots-clés : brachiaria, érosion, scv, Socio-économie, couverture permanente, riz pluvial

Comparison of conventional and direct seeding techniques on lowland ecosystem South of Sayaboury province - PDR Lao (poster)

 poster | |    

The present study, conducted during the rainy season 2002, analyses agro-economic components of conventional transplanting and direct seeded rice on lowland ecosystem (lower and upper terrace). Direct seeded rice varieties, on weeds and rice residues, have been tested on uppers terraces where no conventional rice system could be performed.

Mots-clés : riz inondé, riz irrigué, TCS - Techniques culturales simplifiées, scv, Socio-économie