Among the given options,which one is not correct for the use of large amount of fertilizers and pesticides?

Sid went to market to buy foodgrains for his home and on returning when his mother found the grains discoloured and of low and poor quality,she returned them back to the vendor. The vendor told Sid's mother that it was due to the storage loss of the grains that resulted in their poor quality and gave her the good quality grains.
$(a)$ What kind of qualities are shown by Sid's mother?
$(b)$ What could be the control measures to prevent this storage loss?

The changes brought by biotic and abiotic factors in food grains that are not stored properly include:

"Crop Protection Management is both a pre-harvesting and a post-harvesting affair". Illustrate the statement with suitable examples.

How do storage grain losses occur?

Weeds affect the crop plants by