Efficacy of Herbicides When Spray Solution Application Is Delayed

Table 4

Visible estimates of Italian ryegrass control by glyphosate and paraquat 4 weeks after application at the manufacturer’s suggested weed size and 4 and 8 days after this weed size using spray solutions mixed the day of application or 4 or 8 days prior to application^a.

Timing of application after optimum weed size	Timing of solution preparation prior to application	Italian ryegrass control
		Glyphosate	Paraquat
Days	Days	%
0	0	87^a	95^a
4	0	80^bc	93^a
4	4	85^ab	94^a
8	0	73^d	91^a
8	8	77^cd	93^a

aMeans within a herbicide followed by the same letter are not different at 𝑃≤0.05.