A comparative study of
the efficacy of Biofertilizer
and chemical fertilizer on
II yr Botany
Dept. of Botany
Mercy College, Palakkad
Chemical fertilizers run into the following
Not environmentally viable as the fertilizers are
produced from non-renewable raw material.
Efficiency lesser than other alternative – nearly 60%
The issues of pollution is overwhelming.
Cost of chemical fertilizers are high.
Chemical fertilizers most effective with irrigated
land but not dry lands.
Indiscriminate use of chemical fertilizers deteriotes
Objectives of the studyObjectives of the study
To compare efficiency of Azotobacter
biofertilizers with chemical fertilizer.
To study the biomass increase with
Morphological, Physiological and
• Significant increase in biomass
production and grain productivity.
• Relatively more effective than chemical
• Hence can be concluded with further
study that biofertilizer is a better
alternative to chemical fertilizers.
Supportive literature also confirms its
environmental safeness (effective