Extension and determinants for adoption of direct seeding mulch-based cropping systems in smallholder agriculture, Lao PDR

 acte de colloque | |     

Adoption of SVC by smallholders in Laos

Mots-clés : diffusion, petite agriculture familiale, scv

(poster) Adoption of conservation agriculture in Laos

 poster | |     

The results of these surveys show that there are currently more than 1,200 smallholders using DMC systems on a total of about 1,500 ha of cultivated land. Overall, the rates and levels of DMC systems’ adoption by smallholders appear more important in areas where the environment is the most degraded and/or particularly fragile (case of Nongphakbong village, Botene district). In contrast, in less environmentally-degraded and less fragile areas, the level of DMC systems’ adoption is still rather limited. With more productive soils, mechanized mono-cropping can still provide high profits and, as such, retain the interest of a majority of farmers (case of Bouamlao village, Paklay district)

Mots-clés : écosystèmes cultivés, diffusion, méthodologie, petite agriculture familiale, scv

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

Adoption of Conservation Agriculture in Laos - A case study in the Mekong corridor

 présentation PPT | |     

Case study in the Mekong Corridor

Mots-clés : maïs, Agriculture de conservation, diffusion, TCS - Techniques culturales simplifiées, petite agriculture familiale, scv

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

 acte de colloque | |     

In the four southern districts (Kenthao, Paklay,Boten, and Thongmixay) of Xayabury province, the current cropping systems are based on cash crop production. Maize is the main crop under rainfed conditions and covers more than 30,000 ha in the region. Land preparation is based mainly on plowing, which degrades soil and destroys infrastructures (paddy fields and roads). These deteriorations result from growing pressure on agricultural systems and farmers’ lack of access to affordable labour.

Mots-clés : sans travail du sol, TCS - Techniques culturales simplifiées, propriétés physico-chimiques du sol, gestion du sol, scv

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

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
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