Q5 of 69 Page 15

What is fumigation?

Fumigation is a process, whereby the stored food grains gets disinfected by the fumes of certain chemicals. The chemicals used for fumigation are known as fumigants.

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3 State any two factors, which have helped us to raise the food production. 4 Describe the role of water in crop production. 6 What are weeds? How are they removed? 7 Mention the essential features of good storage.