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

Table 3

Visual estimates of percent POLCO 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		56 DAE
		%						Plant number	Grams
Weedy control		0	e	0	f	0	f	3.3	0.7
Weed-free		100	a	100	a	100	a	0.0	0.0
Glyphosate	900	44	d	44	de	28	ef	4.9	1.1
Prosulfuron^y	2.5	51	d	31	e	37	e	7.1	1.0
Prosulfuron^y	5.0	84	bc	65	bc	56	cd	6.2	0.8
Prosulfuron^y	10.0	94	ab	71	b	76	b	6.6	0.8
Glyphosate + prosulfuron^y	900+2.5	70	cd	52	cd	39	de	5.0	0.7
Glyphosate + prosulfuron^y	900+5.0	84	bc	68	bc	62	bc	4.0	0.7
Glyphosate + prosulfuron^y	900+10.0	94	ab	78	b	77	b	4.3	0.4

zPOLCO: wild buckwheat; WAE: weeks after crop emergence.
yAgral 90 added at 0.2% v/v.
xTreatments were not statistically significant.