Proceedings of Second International Conservation Agriculture Workshop and Conference in Southeast Asia, 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 MAFF/CIRAD, PADAC, Cambodia 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 | 
