Bio fertilizers for sustainable soil health and crop
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Transcript Bio fertilizers for sustainable soil health and crop
Isolation and characterization of strain
Production of certified organism
Production of commercial innoculant
Innoculation
Single innoculation
Combined innoculation
Field application
N
2
rhizobia
Symbiotic
association with
legumes and
non legumes
The nodules filled with pink sap
are called the effective nodules.
stimulatory root
exudates and
form nodules
maintain the rhythm of oxygen
supply to the bacteria and helps
the activity of
nitrogenase enzyme.
Neither the plant
nor the bacteria
can fix nitrogen
when live
separately
The nitrogenase is responsible for
reduction of nitrogen to
ammonia in the process of
nitrogen fixation.
The amount of atmospheric nitrogen fixed varies
with the strains of rhizobium,
plant species and environmental factors.
While chemical fertilizers are used to increase crop productivity,
long-term usage could lead to weakening the roots of plants
and making them easy prey to unwanted diseases. Biofertilizers,
on the other hand, help the soil to remain fertile and strong.