Critical Period of Weed Control in Aerobic Rice

Table 6

Estimated critical periods of weed control for two acceptable levels of crop losses in both seasons (off-season 2010 and main season 2010/2011).

Yield loss levels (%)	Critical period
	Off-season 2010				Main season 2010/2011
	Onset		End		Onset		End
	Growing degree days	Days after seeding	Growing degree days	Days after seeding	Growing degree days	Days after seeding	Growing degree days	Days after seeding
5	137	7	987	49	131	7	1044	53
10	456	23	832	40	412	21	847	43