NDLI: Assessment of management of direct seeded rice production under different water conditions in Cambodia

Content Provider	Springer Nature Link
Author	Ikeda, Hiroyuki Kamoshita, Akihiko Yamagishi, Junko Ouk, Makara Lor, Bunna
Copyright Year	2008
Abstract	In order to assess direct seeding of rice technology to cope with future agricultural labor shortage in Cambodia, agronomic experiments were conducted in 2005 and 2006 to compare direct seeding with transplanting under three water conditions (non-flooded, shallow flooded, and deep flooded conditions) with/without weed control by herbicides (bentazone and cyhalofop-butyl) for two Cambodian rice varieties (shorter stature and early maturity Sen Pidao, taller stature and longer maturity Phka Rumduol). Average rice yield in 2 years was lower in direct seeding (341 g m−2) than transplanting (404 g m−2), but interaction components with year, varieties, water conditions, and weed management were significant, and the attained maximum yield of direct seeding (510 and 464 g m−2 for Phka Rumduol variety in shallow flooded condition with weeding in 2005 and 2006, respectively) was similar to that of transplanting. Plant length and dry weight of rice were reduced in non-flooded and deep flooded conditions compared with shallow flooded condition, and grain yield was the highest in shallow flooded condition. Yield advantage of Phka Rumduol over Sen Pidao increased under direct seeding, particularly under non-flooded conditions in 2005 because weed infestation was more suppressed in Phka Rumduol even without weeding. Increase in 100 g m−2 of weed infestation prior to heading (dry weight basis) reduced about 20% of attainable yield with weed control. This study identified importance of stature and growth duration of rice varieties and presence of standing water as well as the weed control, in order to develop and extend direct seeding in the Cambodia.
Starting Page	91
Ending Page	103
Page Count	13
File Format	PDF
ISSN	16112490
Journal	Paddy and Water Environment
Volume Number	6
Issue Number	1
e-ISSN	16112504
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-01-10
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Direct seeding Labor-saving Rice variety Standing water Weed management Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution Soil Science & Conservation Ecotoxicology Geoecology/Natural Processes Hydrogeology Agriculture
Content Type	Text
Resource Type	Article
Subject	Environmental Engineering Water Science and Technology Agronomy and Crop Science

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