A) Azolla
B) Azadirachtaindica
C) Crotolariajuncea
D) Heveabrassiliansis
Correct Answer: C
Solution :
Manure is a semi-decayed organic matter which is added to the soil in order to maintain it?s fertility, aeration and hydration capacities. Green manure is ploughed back young leguminous crop like Sesbaniaaculeata, Crotolariajuncea, these manure increases nitrogen content of soil. Azolla is a small water fern. It contain symbiont Anabaena (helps in N2-fixation) in it?s leaf cavities. From Azadirachtaindica ? A natural insecticide ?Azadirachtin? is obtained. From Heveabrassiliansis ? Rubber is obtained.
You need to login to perform this action.
You will be redirected in
3 sec
