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

Table 2

Glyphosate-resistant rhizomatous johnsongrass control 20 d after treatment (DAT) and at harvest and heights as a percent of the nontreated 20 DAT and soybean yield as influenced by POST1 glufosinate application rate.

Rate	Johnsongrass control		Johnsongrass heights	Soybean yield
kg ai ha^−1	20 DAT (%)	At harvest (%)	20 DAT (%)	kg ha^−1
0.5	79	64	48	2400
0.6	83	74	42	2600
0.7	85	77	41	2670

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