Pollution of Orchard Environment by Pesticides

Effects of Pesticides on Fruit Trees After pesticides are applied, some of them remain on the surfaces of branches and fruits, and some penetrate into the cuticle or tissues of fruit trees to cause varying degrees of phytotoxicity. Acute injury can cause spots, yellowing, chlorosis, withering, leaf curling, deciduous, fruit drop, and shrinkage in leaves and fruits. Chronic phytotoxicity can reduce the photosynthesis of fruit trees, delay flower bud formation, delay fruit ripening, and taste Deterioration of color and even cause death of fruit trees.

Effects of Pesticides on Soil After pesticides are applied to fruit trees, some pesticides directly enter the soil and are absorbed by soil particles. Residue pesticides in the atmosphere and pesticides on fruit trees are leached into the soil by direct contact with the soil microorganisms, directly or indirectly, to kill the soil. Microorganisms, thus affecting the maturity and permeability of soil, destroying the structure of soil aggregates, reducing soil fertility, and affecting the growth and development of fruit trees.

Impact of pesticides on water and atmosphere

Some of the pesticides that are sprayed are left in litter or soil, and are flushed or irrigated by precipitation into polluted waters in ditches, ponds, lakes and rivers, affecting the growth and development of aquatic organisms. When pesticides are sprayed simultaneously, the pesticide particles move with the wind to pollute the air.

Effects of pesticides on orchard insects

Pesticides also kill natural enemies while killing pests, destroying the ecological balance of biological chains and orchards, and at the same time making insects resistant to insecticides, leading to a dramatic increase in the number of pest populations. Some minor pests quickly developed into major pests due to the drastic reduction in the number of natural enemies. In addition, most pesticides have a killing effect on bees.

Impacts of pesticides on humans and animals On the one hand, pesticides can directly enter the human or animal body through the respiratory tract, skin, or digestive tract during the application process and cause direct damage. On the other hand, pesticide residues in fruit, soil, and water enter the human or animal body through the diet or the food chain. Indirect hazards.

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