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.

Emerged weeds before crop emergence	paraquat (GRAMOXONE MAX 3L)	0.56-1	1.5-2.7 pt	COLLARDS AND TURNIPS. Apply before or after seeding but before crop emergence. Include 1 pt NIS/100 gal. RUP.

Preemergence	bensulide (PREFAR 4E)	5-6	5-6 qt	Apply preplant or preemerge and water in. Not effective on muck soils.

	trifluralin (TREFLAN 4E)	0.5-0.75	1-1.5 pt	Apply before planting. Incorporate 2-3 inches into soil soon after spraying. Use low rate on sandy soils. Not effective on muck.

Postemergence broadleaves	clopyralid (STINGER 3L)	0.094-0.188	4-8 fl oz	Apply at any stage of crop growth. Kills composite weeds, legumes, nightshade. 30-day PHI.

Postemergence grasses	clethodim (SELECT MAX 0.97E)	0.068-0.12	9-16 fl oz	Apply to small grasses. Include 0.25% NIS/acre in spray mix. Maximum 64 fl oz/acre/year. 14-day PHI.

	sethoxydim (POAST 1.5E)	0.19-0.28	1-1.5 pt	COLLARD, KALE, KOHLRABI, MUSTARD, RAPE GREENS. Apply to actively growing grasses. Include 1 qt COC/acre. Maximum total of 3 pt/acre. 30-day PHI.

Perennials	glyphosate (ROUNDUP 4L)	2-3	2-3 qt	Apply to emerged perennials before planting in the spring or after harvest in the fall. Include 1 pt NIS/acre.