Crop diversification in lowland rice cropping systems in Cambodia: effect of soil type on legume production.

Seng, Vang, Eastick, Rowena, Fukai, Shu, Ouk, Makara, Men, Sarom, Chan, Sopheak Yim and Nget, Sivoutha (2008). Crop diversification in lowland rice cropping systems in Cambodia: effect of soil type on legume production.. In: M. Unkovich, Global Issues, Paddock Action: Proceedings of the 14th Australian Society of Agronomy Conference. 14th Australian Society of Agronomy Conference, Adelaide, South Australia, (). 21-25 September 2008.

Author Seng, Vang
Eastick, Rowena
Fukai, Shu
Ouk, Makara
Men, Sarom
Chan, Sopheak Yim
Nget, Sivoutha
Title of paper Crop diversification in lowland rice cropping systems in Cambodia: effect of soil type on legume production.
Conference name 14th Australian Society of Agronomy Conference
Conference location Adelaide, South Australia
Conference dates 21-25 September 2008
Convener Australian Society of Agronomy
Proceedings title Global Issues, Paddock Action: Proceedings of the 14th Australian Society of Agronomy Conference
Place of Publication Gosford Australia
Publisher The Regional Institute
Publication Year 2008
Sub-type Fully published paper
ISBN 1920842349
Editor M. Unkovich
Total pages 4
Collection year 2009
Language eng
Abstract/Summary he majority of rice production in Cambodia is based on rainfed lowland cropping systems, where rice is grown over the wet season, and fields left fallow over the dry season. Improved rice production systems in Cambodia have provided opportunities for crop diversification in rainfed lowland cropping areas. We aim to develop a system based on rice production in the wet season, followed by legume crops grown in the dry season, to provide farmer income over a greater portion of the year. In 2007-08, we evaluated peanut, soybean and mungbean production on 4 soil types commonly used for lowland rice production in Cambodia. Establishment and growth of legume crops varied between varieties and sites. Poor crop establishment and growth was attributed to soil physical constraints, and compounded by differences in crop management between sites. Inherent soil acidity and poor soil structure as a result of wet cultivation for preceding rice production, impaired nutrient availability and uptake by the crop. Insect pests, diseases and weeds also contributed to reductions in yield. Water management was also a significant issue in this rice/legume rotation system. Agronomic and management strategies need to be developed to minimise these constraints. There is potential for adoption of practices such as minimum tillage, retention of crop residues, raised bed configuration, irrigation strategies, and inoculation of legume seed, to improve production in this Cambodian system. Experiments to examine the effect of these treatments on legume crop production on lowland rice soils will be implemented in the 2008-09 dry season.
Subjects E1
820402 Rice
070302 Agronomy
Keyword farmer income
rural food security
intensification
Q-Index Code E1
Q-Index Status Confirmed Code

 
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Created: Fri, 17 Apr 2009, 08:18:13 EST by Emma Cushworth on behalf of Faculty Of Nat Resources, Agric & Veterinary Sc