9. What are weeds? How can we control the
Answers
Answer:
Process of controlling the weed is called weeding. Weeding is done manually by using khurpi and by using mechanical machines. Weeds are also controlled by using some chemical substances like 2, 4-D. These chemicals are called weedicides and are used to kill and destroy the weeds.
Explanation:
Answer:
Weeds are unwanted wild plants that grow in the field.
Some important weeding methods are:
1) Weeds can be controlled using weedicides. It is a chemical, which is sprayed in the fields to kill all available weeds. Weedicides are not harmful to crops.
2) Tilling before sowing of crops also helps in removing weeds. Tilling uproots the weeds. The best time for the removal of weeds is before they produce flowers and seeds.
3) The manual method of removing weeds is with the help of a khurpi. It involves regular uprooting or cutting of weeds close to the ground