Influence of Simulated Imazapic and Imazethapyr Herbicide Carryover on Cotton (Gossypium hirsutum L.)

Table 3

Cotton lint yield as affected by simulated rates of imazapic and imazethapyr.

		2001			2002
Herbicide	Rate^a	Denver City	Munday	Yoakum	Denver City	Yoakum
		Kg/ha
Untreated	—	1080	1800	925	830	1455
Imazapic	1/64X	1205	1905	995	860	1565
	1/32X	1050	1630	1210	910	1690
	1/16X	800	1920	700	975	1425
	1/8X	785	1845	845	1020	1350
	1/4X	195	1615	275	805	1040
	1/2X	0	1645	100	400	1385
Imazethapyr	1/64X	1195	1890	935	955	1635
	1/32X	1160	1660	1180	885	1310
	1/16X	1073	1720	1220	1100	1690
	1/8X	830	1685	895	975	1675
	1/4X	485	1600	435	780	1645
	1/2X	100	1685	375	700	1740
LSD (0.05)		280	NS	370	310	535

^aHerbicide rate: 1.09 g ai/ha (1/64X), 2.19 g ai/ha (1/32X), 4.38 g ai/ha (1/16X), 8.75 g ai/ha (1/8X), 17.5 g ai/ha (1/4X), and 35 g ai/ha (1/2X).