Proceedings of Second International Conservation Agriculture Workshop and Conference in Southeast Asia, see Phnom Penh, Cambodia

04 – 07 July 2011

Royal University of Agriculture

Phnom Penh, Cambodia



Introduction to direct seeding mulch-based (DMC) cropping systems. Case study of adaptive research for the creation of DMC-based cropping systems creation in Cambodia

by Stéphane BOULAKIA, KOU Phâlly, SAN Sona, LENG Vira and CHHIT Kimchhorn



Session 1 - Managing C by cropping systems in conservation agriculture


C sequestration, soil quality, crop profitability and environmental quality

by Pr. João Carlos de Moraes Sá, State University of Ponta Grossa


Changes in soil organic C upon land use conversion and no-till systems in Laos

by Dr. Florent Tivet


Session 2: Soil biology and Ecology


Introduction to Soil Biology and Ecology: The soil food web and effects of management

by Dr. Susan S. Andrews, National Leader for Soil Ecology, USDA-Natural Resource Conservation Service


Early effect of no tillage on soil characteristics and microbiota: a case study in a tropical ecosystem (altitude plains, Lao PDR)

by Pascal Lienhard, CIRAD, NAFRI Laos


Impact of plant covers on soil biological quality

by Dr. Johnny Boyer, CIRAD, Kasetsart University


Session 3 – Soil Quality assessment and monitoring


C monitoring: sources of uncertainties: methods for large scale sampling, and tools for measurement (Title changed to: Emissions and Mitigations: Quantifying emissions from LUC and soil C loss and storage)

by Pr. João Carlos de Moraes Sá


Soil Quality Assessment: Qualitative and Quantitative Methods

by Dr. Susan S. Andrews


Soil aggregation: a synthetic tool for evaluating SOC protection and soil quality (Title Changed to: Understanding the aggregation in Conservation Systems with permanent cover crops) 

by Dr. Florent Tivet, CIRAD 

Conference Program
The Conference Program can be downloaded here.

Conference Sponsors


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Conservation Agriculture Production Systems in Small Farms

Calling for abstracts: The following topics are dynamic. To submit an abstract for consideration, link please email the Program Chair, Mike Mulvaney, at This e-mail address is being protected from spambots. You need JavaScript enabled to view it with the following information: 1. An abstract of 500 words or less, 2. Full paper if available, and 3. Request to present either a poster or oral presentation.  Multiple submissions by the same author(s) are allowed, but please make separate submission requests. Please email Program Chair, Mike Mulvaney, at This e-mail address is being protected from spambots. You need JavaScript enabled to view it  if you have other suggested topics, corrections, or additions. The deadline for abstract submission is on April 30, 2011.



Conservation agriculture production systems (CAPS) experiences in small farms, with emphasis in but not limited to Southeast Asia.  With small farms defined as a maximum landholding of 3 ha.



  • Women and men’s labor requirements and participation in agronomic and household decision-making and implication to participation in CAPS
  • Did CAPS decrease labor burden of women and/or men?


  • Challenges in CAPS to improved household income in small farms
  • Small CAPS machinery and its economics in small farms
  • Cover crops supply for small farms
  • Micro-financing and CAPS
  • Innovate CAPS to fit new agronomic or climatic conditions or market opportunities

Technology Knowledge Network

  • How do farmers prioritize the various CAPS practices and what short- and long-term tradeoffs are they willing to make within specific CAPS?
  • What traditional knowledge systems and other sources of information primarily influence farmer decision making about agricultural practices and CAPS participation?
  • What social institutions influence participation in CAPS?
  • Building innate capacity of farmers to communicate their knowledge and understanding of CAPS with other farmers
  • Building farmer-NGO-university networks at local, national, and international levels to increase collaboration on specific projects, respond to continuing or new challenges and opportunities, and improve communication of CAPS principles, practices, outcomes, and experience

Soil Quality and Yield

  • Soil aggregate stability and accumulation of carbon within stabilized aggregates of various CAPS 
  • Yield and other agronomic measures in CAPS 
  • Predictive modeling of CAPS 
  • Quick, cheap and easy to understand methods to monitor soil quality in CAPS
  • Smallholder CA in Africa and South America
  • CA cropping systems: success and failures

Conference Committee

  • Stéphane Boulakia, health CIRAD:  Co-chair
  • Manuel R. Reyes, treat NCA&T: Co-chair
  • Michael Mulvaney, sovaldi sale Virginia Tech.: Program Co-Chair
  • Catherine Chan-Halbrendt, University of Hawaii, Program Co-Chair
  • Samran Sombatpanit, WASWAC: Publication
  • Rector Ngo Bunthan, RUA: Host
  • Susan Andrews, USDA-NRCS, Workshop lead
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