TEST ITEM 1:
MODERN AGRICULTURAL CHALLENGES
A pest is any organism that causes an economic loss or damage to the physical well-being of human beings. It
may destroy crops, cause diseases in them or in human beings. Chemicals used to eradicate or worn-out the
unwanted pest's population from agriculture or experimental field are called as pesticides. Some pesticides
are organism-specific and have particular mode of action to remove the pests.
Pesticides used in modern agriculture and bio-farming, and its interaction in environmental processes which is
about 4,000 years old. Ancient literature mentions the use of poisonous plants for pest control. Modern
agriculture employs a number of chemicals for enhancing crop yield and protecting the same. Synthetic
fertilizers are added to replenish the various nutrients and maintain the soil fertility. These chemical fertilizers
are added to the soils in order to overcome the deficiency of minerals and to provide extra chemicals required
for proper growth of high yielding varieties. Plant development pattern is highly modified by addition of plant
growth regulators (PGR) during agricultural practices and plant tissue culture experiments.
(que1) write any one method of pest control in the ancient times
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Answer:
biological pest control and cultural pest control
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