Glufosinate Rate and Timing for Control of Glyphosate-Resistant Rhizomatous Johnsongrass (Sorghum halepense) in Glufosinate-Resistant Soybean

Table 3

Glyphosate-resistant rhizomatous johnsongrass control 28 d after treatment (DAT) and at harvest and heights as a percent of the nontreated 20 and 28 DAT and at harvest as influenced by POST2 or POST3 sequential glufosinate application timing.

Timing	Johnsongrass control		Johnsongrass heights
	28 DAT (%)	At harvest (%)	20 DAT (%)	28 DAT (%)	At harvest (%)
POST2	76	65	47	49	76
POST3	83	78	40	36	63

Data pooled over POST1 glufosinate application rate of 0.5, 0.6, or 0.7 kg ai ha⁻¹ and POST2 and POST3 sequential glufosinate application rate of 0.5 or 0.6 kg ai ha⁻¹.
Means followed by the same letter within each column are not significantly different based on Tukey’s HSD at .