Negative Impact of Chemical Pesticide

a. Development of resistance in insects: Continual exposure and intensity of pesticide induce the target pest to develop a resistance generation.

b. Outbreak of pest: Mass destruction of the natural enemies due to pesticide influence also creates a congenial environment for major and minor pests.

c. Hazard of pesticide residue: Depending on the inherent nature of the chemical build-up of a pesticide it depletes its toxicity in time. Before they give up their toxicity due to environmental weathering factors, these chemical lefts persist becoming a potential hazard.

d. Environment Pollution: Only one-half of the treated pesticide deposits itself on the treated surface the rest is disseminated to uncharged areas. This makes the environment polluted. They remain in water, soil, air, and mammal adipose tissues for a long time and may cause long-lasting time.

e. Phytotoxicity: Depending on the nature of pesticides plants may be harmed because of chemical interactions among plants and pesticides. Burning spots on leaves, distorted leaves, restricted growth,h, and other undesirable symptoms are seen in plants.

f. Adverse effect on non-target organisms: The use of pesticides against target pests affects insect parasitoids and predators, honeybees, other pollinators, and wildlife also, which causes the loss of biodiversity.

g. Resurgence of pest: Resurgence refers to an abnormal increase in pest population following insecticide application. The use of broad-spectrum and persistent insecticides kills the natural enemies resulting in a resurgence of insect pests. Resurgence may also develop due to an increase in feeding and reproductive rates of insects due to the application of sub-lethal doses of pesticides.