Gujarat BoardEnglish MediumSTD 8Social ScienceAgriculture3 Marks
Question
Pesticides as factor affecting the a agricultural development
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Answer
Chemical pesticides are used to prevent destruction (damage) to agricultural crops in India. The quality of the soil has reduced and the water pollution has increased due to the Irrational and unrestrained use of chemical pesticides in agriculture. Besides, the toxins of the pesticides remain in the farm productions which cause long-term harmful impacts on human hygiene.
The biological pesticides based on the bacteria virus. fungis. worms in the intestine) and plants are used to control the minute insects (pests) which are harmful to farm products The bacteria make up almost $90$ per cent of $11$ About hundred types of pathogens are reported which cause disease among the germs Spor producing bacteria is used for pest control of the minute insects Bacillus type are leading in this type of bacterias Biological pesticides. cause different diseases aniong the troublesome pests As a result, these pests are destroyed Organic pesticides are available in the market.
Biological pesticides based on bacteria is one type of gastric toxin So it is necessary that it goes into the stomach of those insects which are to be killed. When the liquid of the pesticides is sprayed on the crop. the caterpillars in dormant stage reach the intestine of the worms. This toxic protein causes paralysis in the intestine of the caterpillars especially in its mouth Ultimately the caterpillar dies
It is advisable to use biological pesticides instead of chemical pesticides to save ourselves from the side effects. Neem (limdo), karanj mahudo, tulsi (basil), ratanjyot. mint (pudina). bitter gourd. tobacco, sevant etc are biological pesticides which are used to control minute pests.
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