Timing and Application Rate for Sequential Applications of Glufosinate are Critical for Maximizing Control of Annual Weeds in LibertyLink® Soybean

Table 5

An interaction between glufosinate rate and sequential application timing observed on barnyardgrass and broadleaf signalgrass control 3 weeks after the final application in Fayetteville, AR, in 2015, 2016, and 2017.

Glufosinate rate (g ai ha^−1)	Sequential application timing	Control^b (%)
		Barnyardgrass		Broadleaf signalgrass
451	None	55	g	55	e
	7 DAI	82	cd	73	d
	10 DAI	86	bc	78	cd
	14 DAI	76	def	86	ab
	21 DAI	77	def	73	d
595	None	58	g	56	e
	7 DAI	87	abc	79	bcd
	10 DAI	87	abc	85	abc
	14 DAI	87	bc	88	a
	21 DAI	82	cde	87	a
738	None	71	f	73	d
	7 DAI	90	ab	88	a
	10 DAI	86	bc	88	a
	14 DAI	89	ab	86	ab
	21 DAI	86	bc	88	a
882	None	75	ef	72	d
	7 DAI	94	a	91	a
	10 DAI	92	ab	86	abc
	14 DAI	91	ab	90	a
	21 DAI	88	abc	85	abc

DAI, days after initial application. ^bMeans within a column followed by the same letter are not different according to Fisher’s protected LSD (α = 0.05).