Preeti Nirala and Anoop Mishra

The use of biofertilizers, in preference to chemical fertilizers, offers economic and ecological benefits by way of soil health and fertility to farmers. Cyanobacteria represent a small taxonomic group of photosynthetic prokaryotes which some of them are able to N2 fixation and also possess a tremendous potential for producing a wide range of secondary metabolites. Cyanobacteria have drawn much attention as prospective and rich sources of biologically active constituents and have been identified as one of the most promising groups of organisms capable of producing bioactive compounds. It showed that, the supply of nitrogenous nutrients to the seeds is important also showed that in addition to N-contributions in bga culture has decreased losses from sulphate reducing processes and this has been attributed to the enhancement of germination and faster seedling growth due to algal exudates Statistical analysis confirm that there is a significant difference in plant height, root length, number of leaf, fresh and dry weight of root, leaf and stem in treated plants as compared to control. The present study was conducted to evaluate the effect of blue green algae as biofertilizers on the growth of Mustard plant (Brassica campestris). Germination percentage was higher in culture treated with the algal suspensions than the controlled one. The enhanced growth of Mustard plants induced by blue green algae inoculation in the present study might have resulted from its liberation of biologically active compounds.