International Scholarly Research Notices

Research Article

Influence of Soybean (Glycine max) Population and Herbicide Program on Palmer Amaranth (Amaranthus palmeri) Control, Soybean Yield, and Economic Return

Table 6

Palmer amaranth control 2 weeks after POST application as influenced by herbicide resistance trait and preemergence herbicide treatment during 2010 in Field B13.a
Preemergence herbicidebPalmer amaranth control
Herbicide resistance traitc
Glufosinate Glyphosate
 % 
None49c 29c
S-metolachlor78b 71b
S-metolachlor plus fomesafen94a 93a
aMeans within a herbicide resistance trait followed by the same letter are not significantly different according to Fisher’s Protected LSD test at P ≤ 0.05. Data are pooled over soybean population.
bS-metolachlor and S-metolachlor plus fomesafen applied at 1500 and 1200 + 270 g ha−1, respectively.
cGlufosinate and glyphosate applied to appropriate herbicide-resistant cultivar at 560 and 840 g ha−1, respectively.