24 SportsTurf | January 2016 www.sportsturfonline.com
FIELD SCIENCE
specificity to a biochemical process. Any pests that carry quan-
titative resistance may be controlled with increased pesticide
rate or shortened application intervals allowable on the pesti-
cide label.
Strategies to avoid pesticide resistance or manage potentially
resistant populations:
1. Do not use any one product or mode of action exclusively
This type of action may quickly result in the development
of a resistant population. Many of our current pesticides are
highly effective and control an overwhelming majority of
the target pest population. The lack of susceptible individu-
als remaining after application can provide greater selection
pressure for the resistant population to expand quickly. You
can quickly review the "Group" number on many pesticides to
determine if they have different MoA or if they are the same.
Pesticides with the same group number have very similar MoA
Illustration to demonstrate the progression from initially small resistant populations to practical resistance following many applications of the same pesticide or pesticide class.
