Priorities of the Network

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Priorities of the Network for 2010 & 2011

Regional Component 1.

To test and develop CA-DMC (SCV) systems in irrigated and rainfed rice cropping

Objective

Rice monocropping, with minimal fertilization, is often the rule for both rainfed and irrigated condition. Direct seeding and integration of rice within a crop rotation which includes leguminous cover plants will make it possible, to reduce production costs, control weeding, improve water balance, improve soil fertility and provide fodder biomass to intensify livestock production.

Research Activities

– Set rice seeding period to optimize rain water availability during rice growth and allow the Vigna radiate or other legume, which is directly sown in association with the rice, (approximately a month before rice harvest) to benefit from soil residual moisture to produce grains. Next, rice will be sown on Vigna residues & without any tillage.

– Control of the irrigation at the end of the rice growth period, to create favourable conditions for the sowing of Vigna.

– Develop an association Rice + Vigna (3 years) in rotation with Brachiaria Ruzi & Stylosanthes G. (3 years) in order to integrate intensive animal fattening in the system,, which will generate an attractive income.

Potential partner Countries-Institutions

– Laos through its experience in Xieng Khuang and its project under discussion with B.M. and BAsD on the plains of Savannakhet & Champassak. More than 700.000 ha are affected in Laos.

– Cambodia which leads an experimentation-demonstration process to develop technical & economic DMC-SCV innovations under rainfed & flooded rice agroecologies.

– Vietnam and China who made the system of rice intensification a priority of their R4D.

CANSEA Contribution

– To assess the potentialities of the system in different agroecologies;

– To identify promising research orientations;

– To strengthen the co-operation between Cambodia & Laos in this research area.

Actual or expected support from development projects

– Multi-Partnerships in Cambodia under discussion + project SANREM under development.

– Project WB & BAsD-IFAD under discussion in LAOS on the double topic, restoration of the fertility of the alumino-acidic soils and rice SCV development systems.

– Project IRRI-IWMI in Vietnam.

Regional Component 2.

Restoration of the fertility of  acidic soils with aluminic toxicity

Objective

Acidic soils are very frequent in South-East Asia. They can be of very diverse origins (Sandstone, Claystones… and even on fluviogenic soils….). There are Acrisols (albic, alumic or plinthic…). They all have in common a very low pH (4 to 5), with strong deficiencies in nutrients and often with an aluminic toxicity. When they come from sandstone, these soils are sandy, very poor, with low water holding capacity, which accentuates the risks of drought and with a very weak exchange capacity which is largely saturated by aluminium (aluminic toxicity).

The objective is to restore the fertility of these soils given them back an economically-attractive productivity. The NAFRI-CIRAD experience in the plain of Jars (project PRONAE) showed that within few years conservation agriculture (no soil tillage, permanent coverage of the soil and rotation with leguminous plant with strong biomass) could gradually restore the fertility of these soils and make them economically productive.

Research Activities

Experimentation with various natural rocks to correct soils acidity and deficiencies (phosphate rock), according to local availabilities and costs.

– To develop the farming rotations with Brachiaria Ruzi, Eleusine C. & Styloxanthes G. to increase the pH, to increase the content of bases and limit the importance of the ion Al+++ and bringing to these soils the nutritive elements which are naturally missing.

– To follow the physicochemical evolution of these soils.

– To make a socio economic approach about this fertility restoration.

– To seek a reliable laboratory at regional level.

Potential partner  Countries-Institutions

– Laos through its experience in Xieng Khuang and its project under discussion with B.M. and BAsD on the plains of Savannakhet & Champassak.

– Cambodia which leads an experimentation-demonstration process to develop technical & economical   CA-DMC/SCV innovations on acidic soils.

– China which in the area of Yunnan has important Acrisol areas at altitude.

– Vietnam who also has important Acrisol areas in its northern mountainous regions.

CANSEA Contribution

– To identify promising research orientations;

– To strengthen the co-operation between Cambodia & Laos in this research area.

– To validate an agro-socio-economically approach and the impacts of this fertility restoration .

Actual or expected support from development projects

– Multi-Partnerships in Cambodia under discussion + project SANREM under development.

– Project WB & BAsD-IFAD under discussion in LAOS on the double topic, restoration of the fertility of the alumino-acidic soils and rice SCV development systems.

-Important ongoing research programme in China (Yunnan) & Vietnam.

 

Regional Component 3.

To understand the determining factors of the adoption of AdC-SCV and to identify the socio-economic conditions of its diffusion

Objective

For multiple reasons (cultural, historical, economic, technical….) the adoption of AdC-SCV technologies is slow, especially when these new methods target subsistence farmers without investment capacity. It is important to understand, the level of exploitation, and the determining factors of this adoption. At environmental level, it is also important to identify the conditions of diffusion of these new CA technologies.

Research Activities

– An excellent study was carried out in Laos within the framework of the evaluation of the PASS project (Point d’application du Sud Sayaboury). This study: “Improving cropping systems by introducing Conservation Agriculture: Taking stock of the results & methodology or Research-Development in Southern Sayaboury province, Lao PDR” (J. Slaats & G. Lestrelin – 2209, PCADR), makes a very interesting analysis of the CA impact of, the determining factors of its adoption and the conditions of its diffusion. This study is available on the AC database (: http://orcatad-nafri.org.la/kb).

– To define terms of reference to carry out this type of adoption-diffusion and impact study in the sub-region countries.

Potential partner Countries-Institutions

– Cambodia coordinates at regional level the component “Methodological approach to link research and extension (pilot scale)” in order to develop CA innovations which are assessed through a diffusion network.

– Laos which carries on, in a national environment, the project of development and diffusion of CA-SCV in the province of Sayaboury.

– China which in the area of Yunnan has important problems of transfer and adoption.

– Vietnam who in her northern mountainous regions also encounters the same problems.

And finally,

– Indonesia (IAARD) aims to integrate CA-SCV technologies in the integrated management of catchment areas, and then to follow-up on the determining factors and conditions of adoption of these CA technologies.

CANSEA Contribution

– To define the terms of reference of studies on determining factors, mechanisms and conditions of adoption and diffusion of AdC-SCV.

– To strengthen the co-operation Cambodia-Laos-China (Yunnan) – Vietnam.

– To seek funding in order to carry out these studies.

Actual or expected support from development projects

– Multi-Partnerships in Cambodia under discussion + project SANREM under development.

– Project WB & BAsD-IFAD under discussion in LAOS including a study on CA impact and conditions of its diffusion.

-Important ongoing research programme in China (Yunnan) & Vietnam.

– Implementation of the PAMPA TDR3project, which addresses the issue in various countries in the sub-region.

– Program launch in Indonesia (western Timor in central Java – Klaten).

A financial support is planned by the extension services of the Indonesian ministry of Agriculture in Timor (Soe) provided that the feasibility study is positive.