Key to rankings
G = good control
F = fair or inconsistent control
P = poor control
** = ranking based on limited experimental data
? = insufficient data are available to provide a ranking at time of
publication
Rankings are based on the authors' research data, experience, and label
interpretation. These rankings are intended as a guide to relative
effectiveness of these preemergence herbicides in container nurseries
only. Actual results may vary based on herbicide rate, weather conditions,
substrate, irrigation practices, and other factors. No warranty is
expressed or implied. [TOP]
Controlling nursery weeds requires an integrated management approach
including scouting to identify infestations early, frequent hand weeding
and sanitation around the nursery to prevent spread, selection of the most
appropriate herbicide(s), and a continuing commitment. [TOP]
Here provided are the relative effectiveness of some of the most
commonly used preemergence herbicides on container nursery weeds. Only the
herbicides most commonly used by growers have been evaluated; this is not
a comprehensive listing of all herbicides labeled for use in nursery
crops. [TOP]
Before using a preemergence herbicide, always check the label for
application directions, lists of tolerant crops, and other guidelines and
precautions. [TOP]