Give reasons for the following:
(a) Excess water supply can damage crops.
(b) Grains are not stored without sun-drying.
(c) Overuse of pesticides should be avoided.
Answers
Answer:
a) because watering too much can flourish the top soil and humus content will gradually decrease and roots cannot hold that lose soil..
b)because if moisture content in seeds is not dried then seed will be attacked by the fungi and other microbes...
c) over use of pesticides should be avoided because pesticides can damage pesta and if it is used in high it also the damage the plant by spoiling the vegetative parts like stem and leaves get polluted by excess chemical content in pesticides...
Explanation:
hope it's helpful
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A》Excess water supply can damage crops
➨Excessive water supply can reduce air in the soil space and can cause water logging. This can damage the plant roots and can cause them to die.
B》Grains are not stored without surfeiting
➨Harvested food grains often contain more moisture than is suitable for their storage. Hence, these grains are sun - dried before storing. This prevents growth of microbes on them.
C》Overuse of pesticides should be avoided.
➨Pesticides stick to fruits and vegetables, and are also absorbed by plants. They can, therefore, become a part of the food chain. It is for this reason that the use of pesticides must be kept to the bare minimum.