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

Table 5

Visual estimates of percent SONAR 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	c	0	0	2.6	4.0
Weed-free		100	a	100	100	0.0	0.0
Glyphosate	900	74	b	73	63	2.0	2.5
Prosulfuron^y	2.5	69	b	55	60	1.5	2.2
Prosulfuron^y	5.0	67	b	59	55	1.3	1.7
Prosulfuron^y	10.0	70	b	79	46	1.9	2.5
Glyphosate + prosulfuron^y	900 + 2.5	79	b	74	74	0.9	1.3
Glyphosate + prosulfuron^y	900 + 5.0	85	a	71	63	1.0	0.9
Glyphosate + prosulfuron^y	900 + 10.0	75	b	73	60	1.5	1.8

zSONAR: perennial sowthistle; WAE: weeks after crop emergence.
yAgral 90 added at 0.2% v/v.
xTreatments were not statistically significant.