Table 4: Percent control, density, and dry weight of common lambsquarters in white bean treated with halosulfuron tankmixes applied PPI at Exeter (2011–2013) and Harrow, ON (2012). Means followed by the same letter within a column are not significantly different according to Fisher’s Protected LSD at a.

Herbicide treatment Rate (g ai ha−1)Control Density Dry weight
4 WAE8 WAE
% # m−2 g m−2

Weedy check 0 d 0 d6.8 c 9.3 b
Weed-free check100 a100 a0.0 a 0.0 a
Trifluralin600 94 bc 96 b 0.5 ab 1.4 a
s-Metolachlor1050 82 c 63 c3.9 c12.7 b
Halosulfuron35 96 ab100 a 0.5 ab 1.4 a
Imazethapyr45 96 ab100 a1.3 b 2.2 a
Trifluralin + halosulfuron600 + 35 97 ab100 a 0.4 ab 1.7 a
Trifluralin + imazethapyr600 + 45 96 ab100 a 0.4 ab 1.1 a
Trifluralin + halosulfuron + imazethapyr600 + 35 + 45 99 ab100 a0.2 a 0.5 a
s-Metolachlor + halosulfuron1050 + 35 99 ab100 a0.2 a 1.6 a
s-Metolachlor + imazethapyr1050 + 45 98 ab100 a 0.3 ab 0.8 a
s-Metolachlor + halosulfuron + imazethapyr1050 + 35 + 45 98 ab100 a0.2 a 0.9 a

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