Date: May 10, 2001
Category: Weeds Subject: Preemergence Weed Control
April 2001 was one of the driest on record and, at time of writing, most
areas of New England have received little if any rainfall in May. Turf
growth is slow and may have ceased in some locations. Monitor for moisture
stress.
Preemergence herbicide products for crabgrass and annual weed control
need to be watered in. Applications made under dry conditions and in the
absence of irrigation may result in poor weed control. Also, the ability
of turf to have a competitive advantage over weeds is decreased during
periods of moisture stress. Other than irrigation, no action should be
taken at this time, including re-application of products. Carefully monitor
to determine if crabgrass and other annual weeds are emerging. Postemergence
control products can be used at the appropriate time.
