Question

Name the following:-
1.The plant nutrients found in fertilizers:____________
2. Any three sources of irrigation:___________
3. The nitrogen fixing bacteria found in the root nodules of leguminous plants:_____________
4. The method of separating the grains from the chaff:_____________
5. The type of irrigation in which wastage of water is less:____________
6. An example of weedicide:_________
7. Two weeding tools:____________
8. Any two harvest festivals of India:__________
9. Any two traditional methods of irrigation:_______________
10. A machine used for harvesting as well as threshing:____________​

Answer 1

1. nitrogen, phosphorus and potassium

2. Lake , well ,water

3. rhizobium

4. threshing

5. drip system

6. dichloride acetic acid

7. hoe and Harrow

8. Baisakhi and Pongal

9. most and dhekli

10. combine machine

Answer 2

Explanation:

1)nitrogen, phosphorus, and potassium. Of secondary importance are the elements sulfur, magnesium, and calcium.

2)Well,river,tank

3)rhizobia

4)The chaff is separated from the grains by winnowing. In this method the farmer gently drops the mixture to the ground from a height. The heavier grains are collected at a place, while the lighter chaff blows away.

5)Dreep irrigation

6)atrazine

7)short handled and long handled.

8)Makar Sankranti,Baisakhi

9)(i) Check Basin Method (ii) Furrow Irrigation Method (iii) Strip Irrigation Method (iv) Basin Irrigation Method.  

10)Combine harvester