(poster) Physical Characteristics of Soil under Different Cropping and Natural Systems on the Plain of Jars

 poster | |     

The results of the WSA analysis are promising, highlighting the positive features of forage species like B. ruziziensis and S. guianensis, which seem able to aggregate smaller soil particles. Annual records should be made for B. ruziziensis, S. guianensis and others systems, and linked with analysis of microbial activities to show the beneficial functions of each species or system in soil aggregation. It is difficult to interpret the positive features of species in regard to bulk density and soil permeability as interaction is complex and various parameters are involved. At the same value of bulk density, this parameter will be affected by article size and arrangement, and organic content. In the case of rice and pine forest, the lower bulk density is mainly related to macro-porosity (high level of permeability). In contrast, B. ruziziensis and S. guianensis showed, for lower Da, a lower value of permeability probably related to an increase of micro-porosity. This characteristic has to be analysed during subsequent measurements of Da and soil permeability data as micro-porosity is a main component influencing water retention.

Mots-clés : stylosanthès, types de sol, brachiaria, systèmes agropastoraux

(paper) Institutional tools for the promotion of Conservation Agriculture in Lao PDR

 résumé de conférence | |     

The National Agroecology Programme (PRONAE) and the Southern Xayabury Application Point(PASS) of the Capitalization and Rural Development Support Programme (PCADR) have developed an approach in the provinces of Xayabury and Xieng Khouang that relies on direct-sowing mulch-based cropping systems (DMC). This approach has provided relevant alternatives to traditional agricultural practices which can no longer ensure the foundations of sustainable agriculture.In view of the results obtained, be they socio-economic or environmental, the Council of Ministers asked the Ministry of Agriculture and Forestry (MAF) to promote these techniques throughout the country, and called for this approach to be included in university and school courses. It is in that context that the Sector-based Agroecology Programme (PROSA), whose main aim is to define and implement a national strategy for the dissemination of Conservation Agriculture based on agroecological techniques (DMC), operates.This strategy is based on implementing an Agroecology Action Plan relying on the necessary incorporation ofnatural capital in rural development policies. The plan involves programming activities, setting in place decision-making and operational processes and bringing into play financial, material and human resourceson both a central and local level (province, district and sub-district). The finest level of intervention comprisesgroups of farmers linked to service centres set up by the government within the districts (Kum Ban Pattana). On each level, the agroecology action plan is to arise from an integrated and concerted approach, in which each category of rural development stakeholders is committed to a process in which their needs and skills are acknowledged by all. Likewise, on each level, it is necessary to define, in a concerted manner, the initiatives that have to be taken (diagnosis, planning, implementation, monitoring-appraisal), the tools required (training of the different stakeholders, organization and structuring of the State sector and of the private sector, contractualization between stakeholders) and the fields of involvement (extension, local development funding arrangements, management of natural resources, equipment management, organization of supplyand marketing chains, etc.). Each of the two pilot provinces, Xayabury and Xieng Khouang, is in the process of defining its Provincial Action Plan in Agroecology. An initial diagnosis of farming systems and their environmental impacts, along with the needs and contributions of each category of stakeholders, has been completed. The provinces then gave priority to defining decision-making and operational processes, and setting in place financial arrangements for the Provincial Action Plans. Initially, two funding tools are under consideration: constitution of a development fund, and agricultural credit. On a central level, the decision-making and operational processes are directly attached to the Ministry of Agriculture and Forestry, notably via the Planning Department. The creation of a Research and ServiceProvider Centre in support of local and national development is envisaged. Likewise, on a central level, it is a matter of facilitating the implementation of training plans for the different stakeholders. Lastly, the inclusionof agroecology in university and school courses is under way. Also for the educational sector, it is necessary to define a training plan to strengthen the skills and abilities of teachers. The creation of a national, or even regional network associating agricultural faculties and agricultural schools would enable an economy of scale by more effectively taking advantage of complementarities and decentralization to a more functional local level.

Mots-clés : Agriculture de conservation, formation, diffusion, méthodologie, petite agriculture familiale, politique publique

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

(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

(diaporama) Institutional tools for the promotion of conservation agriculture

 présentation PPT | |     

To ensure a sustainable strategy of development of the agroecology in Laos, it is necessary: • To precede in a integrative and participatory way since, only the direct and volunteer involvement of each actor will make it possible to make sure that the objectives and the means mobilized to achieve these goals are well shared and accepted by each one, • To approach jointly and in close interaction with the technical aspects all the socio-economic favorable conditions for the appropriation, the diffusion and sustainability of dynamic in progress

Mots-clés : formation, recherche-action, érosion, diffusion, méthodologie, petite agriculture familiale, politique publique

L'écobuage Pour une restauration de la fertilité chimique des sols à moindre coût (poster)

 poster | |     

Dans les zones de montagne au Nord du Vietnam, la faible fertilité chimique résultant d’une gestion traditionnelle oblige à une correction pour espérer des niveaux de production satisfaisants. Cependant, la faible capacité d’investissement des populations agricoles ne leur permet pas d’avoir recours à des apports massifs en engrais chimiques et amendements organiques et calcaires. L’écobuage, qui consiste en une combustion lente et partielle de la matière organique du sol, permet de retrouver des conditions favorables à moindre coût. Il doit être obligatoirement associé aux couvertures végétales.

Mots-clés : écobuage, Riz, fertilité, scv

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

Mucuna pruriens associé au maïs Un système adapté sur sols moins dégradés et peu compactés (poster)

 poster | |     

Mucuna pruriens est une légumineuse rampante et volubile qui nécessite des sols de fertilité moyenne, bien draînés et peu compactés. Ses graines sont traditionnellement utilisées comme aliment pour les animaux. Elle est agressive contre les mauvaises herbes (ombrage). Sa production de graines est aisée. Elle est facilement contrôlable par fauche et elle disparaît après l’hiver. Sa fixation symbiotique de l’azote atmosphérique en fait un excellent précédent pour le maïs.

Mots-clés : maïs, Mucuna pruriens, mulch, scv

Arachis pintoï Une couverture permanente sous verger (poster)

 poster | |     

Dans les vergers, en particulier sur sols en pente, l’érosion et la pression croissante des mauvaises herbes sont deux problèmes majeurs. L’Arachis pintoï,une légumineuse (fixant l’azote) avec un système racinaire puissant, compétitive par rapport aux autres herbes mais ne grimpant pas est particulièrement bien adaptée aux conditions rencontrées dans les montagnes au nord du Vietnam. C’est aussi un excellent fourrage, riche en protéines, qui peut être utilisé pour l’alimentation animale

Mots-clés : stylosanthès, Arachis pintoï, scv, couverture permanente

Upland Agroecology Research and development in Vietnam

 présentation PPT | |     

Diaporama upon land degradation on continuing shifting cultivation. The sloping land use carry on erosion, run-off for the smallholders of the highlands in Vietnam. The VASI and CIRAD institute use an upland agro-ecology approach to reach sustainable agricultural production by smouldering for example.

Mots-clés : écobuage, Les Hautes Terres , érosion, Adventices, mulch, scv, Intégration agriculture élevage
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