TABLE 1.

Herbicide range of doses applied to resistant (R) and susceptible (S) populations with or without malathion.

Herbicide	Field rate (g a.i. ha–1)	Malathion*	Pop	Rates (g a.i. ha–1)
Tribenuron	18.7	±	R	18.75	37.5	56.25	75	150	300	0
		±	S	0.29	0.59	1.17	2.34	4.69	9.38	0
Florasulam	7.5	–	R	3.75	7.5	15	30	60	0
		–	S	0.47	0.94	1.88	3.75	7.50	0
Imazamox	50	±	R	25	50	75	100	200	0
		±	S	1.56	3.13	6.25	12.5	25	50

* (±) means that both treatments with malathion and without malathion were applied; (^–) means that only herbicide without malathion treatment was applied.