Wet cultivation in lowland rice causing excess water problems for the subsequent non-rice crops in the Mekong region

Mitchell, Jaquie, Cheth, Kimngoy, Seng, Vang, Lor, Bunna, Ouk, Makara and Fukai, Shu (2013) Wet cultivation in lowland rice causing excess water problems for the subsequent non-rice crops in the Mekong region. Field Crops Research, 152 57-64. doi:10.1016/j.fcr.2012.12.006


Author Mitchell, Jaquie
Cheth, Kimngoy
Seng, Vang
Lor, Bunna
Ouk, Makara
Fukai, Shu
Title Wet cultivation in lowland rice causing excess water problems for the subsequent non-rice crops in the Mekong region
Journal name Field Crops Research   Check publisher's open access policy
ISSN 0378-4290
1872-6852
Publication date 2013-10-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.fcr.2012.12.006
Volume 152
Start page 57
End page 64
Total pages 8
Place of publication Amsterdam, The Netherlands
Publisher Elsevier BV
Language eng
Formatted abstract
Crop diversification is advocated for improvement of income of lowland rice farmers in the Mekong region, including Laos, Cambodia and Thailand. One common problem of adding non-rice crops after wetland rice is excess water caused by reduced drainage associated with the hard pan that is commonly created to store water in the paddy for the rice crop. This paper firstly describes the water balance in the lowland fields particularly on how deep percolation is decreased by the hard pan, and the effect of wet cultivation on soil compaction and water availability in the subsequent crops such as mungbean. Experimental work in Cambodia shows how non-rice crops such as mungbean and peanut often fail completely or partially due to excess water. The common experience is complete failure of the early wet season non-rice crop when rain started earlier and the lowland paddy is saturated with water, but also non-rice crops often do not grow well due to shallow root systems confined to the top soil above the hard pan. Destructing the hard pan may help non-rice crops, but the process is expensive and may have an adverse effect on subsequent rice crops. Experimental work has also demonstrated that where irrigation water is available, irrigation is often not effective as it causes soil saturation in the top soil. Ways to minimize the excess water problem are discussed. 
Keyword Waterlogging
Puddling
Soil strength
Legumes
Mungbean
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Agriculture and Food Sciences
Official 2014 Collection
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 4 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Sun, 10 Nov 2013, 10:31:26 EST by System User on behalf of School of Agriculture and Food Sciences