The early-season heat could impact pest management. According to University of Minnesota Entomology Professor Ian MacRae, the number of insect generations can be sped up in that scenario. “When that happens, it means you have a mixed population of caterpillars, eggs, adults, and more insects to deal with throughout the summer.” Pyrethroid resistance in cutworms is also a problem this year. MacRae suggests spraying when it is overcast or in the evenings for best efficacy. Listen to the full interview with Ian MacRae here.
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