Weed Control in Corn and Soybean with Group 15 (VLCFA Inhibitor) Herbicides Applied Preemergence

Table 3

Control, density, and dry weight of common ragweed in corn and soybean treated with VLCFA inhibitor herbicides, applied preemergence (PRE), near Exeter and Ridgetown (2015–2017)^a.

Treatment	Rate (g·ai·ha^−1)	Control (%)		Density (no. m^−2)	Dry weight (g·m^−2)
		4 WAA	8 WAA
Corn
Weed-free control		100	100	0.0^a	0.0^a
Weedy control		0^b	0^a	51.2^c	128.6^b
Dimethenamid-P	544	56^a	13^a	24.8^b	86.7^b
Pethoxamid	840	66^a	20^a	20.9^b	120.0^b
Pyroxasulfone	100	77^a	30^a	18.7^b	91.9^b
S-metolachlor	1050	42^a	12^a	36.1^bc	141.3^b
Soybean
Weed-free control		100	100	0^a	0.0^a
Weedy control		0^b	0^b	26^b	29.1^b
Dimethenamid-P	544	13^ab	12^ab	26^b	37.7^b
Pethoxamid	840	17^a	19^a	23^b	31.2^b
Pyroxasulfone	100	28^a	26^a	19^b	27.2^b
S-metolachlor	1050	7^ab	6^ab	26^b	34.7^b

^aMeans followed by the same alphabetical letter within a column for each crop are not significantly different according to the Tukey–Kramer multiple range test at .