Biofertilizers
Kill pests
Prevent pest growth
Retain soil fertility
All the above
(c)Biofertilizers provides the essential elements to the soil and hence maintain or increase the soil fertility.
Which organisms are used to increase thesoil fertility ?
A nitrogen fixing bacterium that forms a loose assocation with the roots of crop plants is
Leghaemoglobin occurs in
Give scientific reasons : The pressure on use of organic farming and biotic fertiliser has been increased.
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