Effects of alternate wetting and drying techniqueson grain yield and water use efficiency in irrigated rice

Punyawansiri Surasit, . and Chaengpui Kantasinee, . and Kwanyuen Bancha, . Effects of alternate wetting and drying techniqueson grain yield and water use efficiency in irrigated rice. pp. 4-11. ISSN 2672-7226

The alternate wetting and drying method (AWD) is an irrigation technique to reduce the use of water in paddy fields. The effect assessment of AWD method on plant growth yield and water management in Thailand is still in preliminary stages and few studies have been conducted in the region. The objective of this study is to determine whether AWD method may maintain grain yield with reduced water input compared to the conventional practice of continuous flooding (CF) in north Thailand. The implementation of water management strategies under AWD method was tested in comparison with CF. The experiment was conducted during the dry season in 2016 and 2017 in fields growing the Phitsanulok-2 rice variety in Phitsanulok irrigation district. From the results water input to paddy plots using AWD method was less than CF by approximately 27.20 in 2016 and 18.20 in 2017 during the dry season. The average water productivity of paddy was at 1.19 kg/m3 and 0.89 kg/m3 for AWD and CF methods respectively. Therefore the AWD method may be an appropriate strategy for rice cultivation and it is an effective way to reduce excessive use of water in agriculture. The methodologies used were also adequate to support irrigation management programmes for farmers.

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Abstract

The alternate wetting and drying method (AWD) is an irrigation technique to reduce the use of water in paddy fields. The effect assessment of AWD method on plant growth yield and water management in Thailand is still in preliminary stages and few studies have been conducted in the region. The objective of this study is to determine whether AWD method may maintain grain yield with reduced water input compared to the conventional practice of continuous flooding (CF) in north Thailand. The implementation of water management strategies under AWD method was tested in comparison with CF. The experiment was conducted during the dry season in 2016 and 2017 in fields growing the Phitsanulok-2 rice variety in Phitsanulok irrigation district. From the results water input to paddy plots using AWD method was less than CF by approximately 27.20 in 2016 and 18.20 in 2017 during the dry season. The average water productivity of paddy was at 1.19 kg/m3 and 0.89 kg/m3 for AWD and CF methods respectively. Therefore the AWD method may be an appropriate strategy for rice cultivation and it is an effective way to reduce excessive use of water in agriculture. The methodologies used were also adequate to support irrigation management programmes for farmers.

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Item Type:	Article
AGROVOC Term:	Irrigation systems
AGROVOC Term:	Irrigated rice
AGROVOC Term:	Oryza sativa
AGROVOC Term:	Paddy
AGROVOC Term:	Wetting agents
AGROVOC Term:	Drying
AGROVOC Term:	Grain crops
AGROVOC Term:	Water use efficiency
AGROVOC Term:	Water conservation
AGROVOC Term:	Sustainable agriculture
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/9623

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