Water Use Efficiency and Physiological Response of Rice Cultivars under Alternate Wetting and Drying Conditions

Table 1

Rainfall and total water supply (irrigation plus rainfall) of the four rice varieties grown under two water management treatments and two N rates at IRRI farm in the three consecutive seasons.

N	Irrigation (mm)		Rainfall	Total water input (mm)		Reduction
	AWD	CF			AWD	CF
2009 DS
LN	517	606	349	866	955	9.3
HN	537	584	349	886	933	5.0
2009 WS
LN	107	168	1079	1186	1247	4.9
HN	102	172	1079	1181	1251	5.6
2010 DS
LN	753	1024	92	845	1116	24.3
HN	729	998	92	821	1090	24.7

Data are the means across four varieties. Variety had insignificant effect on the amount of water supply.