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 8

Soybean yield as influenced by soybean population and preemergence herbicide in Field E2 during 2010 and Field E3 during 2011.^a


Treatment factor	2010	2011
	Field E2	Field E3
	kg ha⁻¹

Soybean population ^b
Low	200b	2210b
High	430a	3310a
Preemergence herbicide ^c
None	250b	1910b
S-metolachlor	350a	3130a
S-metolachlor plus fomesafen	340a	3240a

^aMeans within a field and treatment factor followed by the same letter are not significantly different according to Fisher’s Protected LSD test at P ≤ 0.05.
^bLow soybean populations in Fields E2 (2010) and E3 (2011) were 145,000 and 193,000 plants ha⁻¹, respectively. High soybean populations in these respective fields were 464,000 and 533,000 plants ha⁻¹.
^cS-metolachlor and S-metolachlor plus fomesafen applied at 1500 and 1200 + 270 g ha⁻¹, respectively.