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

Table 2

Visual estimates of percent CONAR 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^x	Dry weight^x
		2 WAE		4 WAE		8 WAE
		%						Plant number	Grams
Weedy control		0	d	0	e	0	d	9.5	20.9
Weed-free		100	a	100	a	100	a	0.0	0.0
Glyphosate	900	20	c	20	bc	23	bc	9.1	37.6
Prosulfuron^y	2.5	18	c	4	d	18	bc	10.6	36.0
Prosulfuron^y	5.0	17	c	13	cd	33	bc	9.6	25.1
Prosulfuron^y	10.0	28	bc	16	bcd	17	c	5.9	30.7
Glyphosate + prosulfuron^y	900+2.5	42	b	23	bc	40	b	10.7	44.9
Glyphosate + prosulfuron^y	900+5.0	41	b	22	bc	31	bc	11.5	39.1
Glyphosate + prosulfuron^y	900+10.0	43	b	33	b	39	bc	10.5	48.0

zCONAR: field bindweed; WAE: weeks after crop emergence.
yAgral 90 added at 0.2% v/v.
xTreatments were not statistically significant.