Explain the importance of biopesticides in or ganic farming.
Answers
Biological research into soil and soil organisms has proven beneficial to organic farming. Varieties of bacteria and fungi break down chemicals, plant matter and animal waste into productive soil nutrients. In turn, they produce benefits of healthier yields and more productive soil for future crops.
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Answer:
- Biopesticides are pesticides obtained from biological agents and organisms that are toxic to pests that invade crops.
- They work against various insects, weeds, and nematodes
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- These pesticides can be naturally occurring in the microorganisms or can be induced genetically in the plants through genetic engineering.
- Usage of biopesticides prevents soil pollution and contamination from various chemicals like fluoroacetamide. They also have a lower chance of causing skin irritation in humans and animals.
- Chemical fertilizers have broad specificity, that is, they tend to kill a large population of pests but may also kill beneficial insects like pollinators. Biopesticides are specific for particular weeds and pests, hence they do not harm other neighboring species.
- Following are the examples of biopesticides:
1. Bacillus thuringiensis that causes intestinal diseases of various lepidopteran, coleopteran, and dipteran species. The toxin from this bacteria has also been directly expressed in plants through genetic engineering, such as Bt cotton and Bt brinjal.
1. Bacillus thuringiensis that causes intestinal diseases of various lepidopteran, coleopteran, and dipteran species. The toxin from this bacteria has also been directly expressed in plants through genetic engineering, such as Bt cotton and Bt brinjal.2. Trichoderma, a plant root fungus, acts as a biocontrol agent against several plant pathogens
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