Vegetable Weed Control Bulletin

2009 Weed Control Guide for Vegetable Crops
MSU Extension Bulletin E-433


Weed Problem	Chemical	Pounds Active Ingredient (AI)/Acre	Amount of Commercial Product/Acre	Remarks and Limitations Items in bold have changed since the printed bulletin.

Germinating or emerged annuals	linuron (LOROX 50DF)	0.75-1	1.5-2 lb	Apply after transplanting but before celery is 8 inches tall. Do not exceed 40 PSI pressure. Do not apply when temperatures exceed 85 F, and do not mix with wetting agents or other pesticides.

	prometryn (CAPAROL 4L)	1-2	1-2 qt	Make 1 application 2-6 weeks after transplanting but before weeds are 2 inches tall. Do not exceed 2 lb ai/acre/year.

Preemergence grasses, yellow nutsedge	s-metolachlor (DUAL MAGNUM 7.6E)	0.95-1.9	1-2 pt	Apply before or immediately after transplanting. Use high rate on muck soils. Follow with 0.25 inch water within 7 days. 62-day PHI. See: www.farmassist.com to obtain label.

Postemergence grasses	clethodim (SELECT MAX 0.97E)	0.68-0.12	9-16 fl oz	Apply to actively growing grasses. Maximum 64 fl oz/acre/year. Include 0.25% NIS/acre. 30-day PHI.

	sethoxydim (POAST 1.5E)	0.19-0.28	1-1.5 pt	Apply to actively growing grasses. Include 1 qt COC/acre. Maximum total of 3 pt/acre/season. 30-day PHI.

Postemergence perennials	glyphosate (ROUNDUP 4L)	2-3	2-3 qt	Apply to emerged perennials before planting in the spring or after harvest in the fall.