Table 3: Percent control, density, and dry weight of common ragweed in white bean treated with halosulfuron tankmixes applied PPI at Exeter, ON (2012-2013). Means followed by the same letter within a column are not significantly different according to Fisher’s Protected LSD at .

Herbicide treatmentRate (g ai ha−1)ControlDensity Dry weight
4 WAE8 WAE
%# m−2 g m−2

Weedy check 0 e 0 e1.8 b 5.2 bc
Weed-free check100 a100 a0.0 a 0.0 a
Trifluralin600 28 d 19 e2.7 b 6.6 c
s-Metolachlor1050 30 d 40 d2.5 b18.6 c
Halosulfuron35 99 a 97 ab0.1 a 0.0 a
Imazethapyr45 84 c 73 c 1.2 ab 1.7 ab
Trifluralin + halosulfuron600 + 35 96 ab 90 abc0.3 a 0.6 ab
Trifluralin + imazethapyr600 + 45 88 c 78 bc 1.0 ab 2.3 ab
Trifluralin + halosulfuron + imazethapyr600 + 35 + 45 98 a 96 ab0.0 a 0.0 a
s-Metolachlor + halosulfuron1050 + 35 98 a 93 abc0.2 a 0.3 ab
s-Metolachlor + imazethapyr1050 + 45 90 bc 78 bc 0.9 ab 1.2 ab
s-Metolachlor + halosulfuron + imazethapyr1050 + 35 + 45 98 a 94 ab0.0 a 0.0 a

Abbreviations: WAE, weeks after crop emergence; PPI, preplant incorporated.