Biology, asked by hetnoobinho, 7 months ago

8.
Materials of biological origin which are commonly
used to maintain and improve soil fertility are
(1) Green manures (2) Biofertilizers
(3) Bioinsecticides (4) Both (1) and (2)

Answers

Answered by bharath6955
1
Green manures and bio fertilisers are commonly used for soil fertility
So your answer is both 1&2
Bio insecticides are used to increase plant resistance
Answered by premapallak
3

Answer:

answer : Green manures.

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