Management of Palmer Amaranth (Amaranthus palmeri) in Glufosinate-Resistant Soybean (Glycine max) with Sequential Applications of Herbicides

Table 3

Palmer amaranth control and soybean yield as influenced by main effects of PRE and POST herbicide treatments during 2010 on the Nahunta soil series^a.

Herbicides	Herbicide rate	Palmer amaranth control	Soybean yield
	g ha^−1	%	kg ha^−1
PRE herbicides
None		29 e	1150 c
Flumioxazin	700	98 a	1460 b
Sulfentrazone plus cloransulam methyl	28 + 36	66 cd	1450 b
𝑆-metolachlor plus fomesafen	1200 + 270	77 c	1680 a
Flumioxazin plus chlorimuron	70 + 21	93 ab	1420 b
Fomesafen	280	80 bc	1570 ab
𝑆-metolachlor	1500	56 d	1500 ab
POST herbicides
None		64 b	1500 a
Glufosinate	670	73 a	1340 b
Glufosinate then glufosinate	400 then 400	76 a	1530 a

^aMeans within a treatment factor (PRE or POST herbicides) for each parameter followed by the same letter are not different according to Fisher’s Protected LSD test at 𝑃≤0.05. Data for PRE herbicides are pooled over levels of POST herbicides. Data for POST herbicides are pooled over levels of PRE herbicides.