Weed Management in Spring Seeded Barley, Oats, and Wheat with Prosulfuron

Table 1

Visual estimates of percent AMBEL weed control at 2, 4, and 8 WAE as well as weed density and dry weight with different rates of prosulfuron alone and in combination with glyphosate on spring cereals at Exeter, Ontario, in 2010-2011. Means followed by the same letter within a column are not significantly different according to Fisher’s protected LSD at 𝑃<0.05^z.

Treatment	Rate; g ai ha^−1	Weed control						Density		Dry weight
		2 WAE		4 WAE		8 WAE
		%						Plant number		Grams
Weedy control		0	f	0	e	0	e	3.4	c	2.3	c
Weed-free		100	a	100	a	100	a	0.0	a	0.0	a
Glyphosate	900	17	e	32	d	58	d	3.3	c	1.2	b
Prosulfuron^y	2.5	60	d	49	d	67	cd	2.4	bc	0.9	ab
Prosulfuron^y	5.0	91	bc	86	bc	80	bc	1.4	ab	0.3	a
Prosulfuron^y	10.0	99	ab	95	abc	86	ab	0.8	a	0.1	a
Glyphosate + prosulfuron^y	900+2.5	83	c	77	c	73	bcd	2.1	bc	0.8	ab
Glyphosate + prosulfuron^y	900+5.0	92	bc	80	c	82	bc	0.8	a	0.3	a
Glyphosate + prosulfuron^y	900+10.0	97	ab	98	ab	88	ab	0.8	a	0.2	a

zAMBEL: common ragweed; WAE: weeks after crop emergence.
yAgral 90 added at 0.2% v/v.