Pesticide Resistance

Last updated: September 9, 2018

What Does Pesticide Resistance Mean?

Pesticide resistance refers to a pest’s decreased susceptibility to one or more type of pesticide. Various types of pests have been shown to be resistant to products, including weeds, mites, insects and small garden animals. According to the IRAC (Insecticide Resistance Action Committee), pest resistance occurs when the sensitivity of a particular pest population decreases in spite of repeated applications of pesticide.


Maximum Yield Explains Pesticide Resistance

In the 1940’s, 7% of crops were lost because of pesticide resistance, while the 1990’s saw an agricultural loss of 13%. According to scientists, pests also undergo a process of evolution. Therefore, genetic resistance to certain types of pesticides evolved into a genetic feature that can be passed on from offspring to offspring. Because mites and other small insects have a short lifespan of thirty days of less, pests often go through several generations within the space of a few months, which can make them even less susceptible to pesticides.

Pest resistance has also been known to increase with pest evolution. As such, pesticides contain more and more chemicals. According to recent studies, more than 500 species of pests from around the world are resistant to pesticides.


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