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

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

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

Example of an Iterative Approach Conducted with Smallholders in Northern Laos for the Adoption of Direct Seeding Mulch-Based Cropping Systems

 acte de colloque | |    

Since the 1990s, in the southern districts of Xayabury province in the Mekong corridor, traditional farming systems have changed through extensive agricultural development based on cash-crop production. This development, by way of intensification, depends on local market accessibility, transfer of technologies from Thailand and the financial capacities of local enterprises. Thai Inputs, heavy mechanisation and technical skills are imported and cropping is largely opportunistic, following Thai market demand. Land preparation, based on burning residues and ploughing on steep slopes, has allowed for cultivation of large upland areas. As a result of this development, combined with land allocation and increasing population density, fallow periods are disappearing. Furthermore, this resource-mining' generates land erosion, fertility loss, yield decline and chemical pollution as well as destruction of roads and paddy fields. In light of this, the Lao National Programme of Agroecology has implemented a holistic research approach in order to propose various systems for integrating crops and livestock production to farmers. From a large range of technologies that were tested, maize production using direct seeded grain on former crop residues under no-tillage systems has been implemented. Results achieved'under the various conditions are presented in this paper: the yields obtained are close to and sometimes even higher than those obtained in conventional systems. Labour, costs, soil erosion, net income and labour productivity are also all observed.

Mots-clés : recherche-action, méthodologie, mulch, gestion du sol, scv