Fill in the blanks 1.)Seed drill is used for of the seeds.

2.)ploughing helps theof roots of the growing plants.

3.)Tilling of the soil is also called a .

4.)Manure and fertilizers are use ti maintain theof the soil.

5.)A most common weedicide is.

6.)After harvesting, grains are separated from the chaffand hay by or by using .

7.)The economial methods of irrigation areand.

8.)The wild plants which grow along with the main crop are called.

9.) Shifting of tiny plants from a nursery to the main field is called.

10.) Excess water and wet soil do not permit properof the seeds or roots of the plants.

1.) Sowing

2.) Respiration

3.) Soil preparation or cultivation or ploughing

4.) Fertility

5.) 2, 4 -D

6.) winnowing threshers

7.) Surface irrigation and sprinkler irrigation

8.) Weeds

9.) Transplantation

10.) Aeration

Explanation:

1.) Seed drill sows crop seed

2.) Ploughing assist in the respiration and penetration of the roots of a growing plants

3.) Tilling the soil is breaking of the soil lumps and turning of the soil

4.) Manure and fertilizers supply nutrient to the soil for the uptake by plant in food production

5.) 2, 4 -D are a range of weedicide containing 2,4-D as the active ingredient

6.) Winnowing is the separation of grain from straw

Threshers remove seeds from husks and stalks

7.) Surface irrigation -gravity enables the flow of the water

and sprinkler irrigation- Use of preset tools for irrigation

8.) Weeds are the unwanted, in situ, growing plants close to the crops

9.) Transplantation is the method of relocating plants

10.) Excess water limits access of the roots and seeds to atmospheric oxygen