Asian Journal of Research in Crop Science

The growing demands of agriculture and the necessity to reduce the environmental impacts of chemical fertilizers have brought algal biofertilizers to the forefront as a sustainable solution. Algal consortium-based biofertilizers, in particular, hold promise due to their capacity to improve soil health, increase crop yield, and contribute to sustainable agricultural practices. This paper examines the potential of algal consortium as a unique biofertilizer, emphasizing the roles of different algal species, the mechanisms they employ in nutrient enrichment, and the overall impact on soil and plant health. Improved nutrient availability (i.e., N, P, K, Zn, and S), phytohormone modulation, phytopathogen biocontrol, and reduction of biotic and abiotic stressors are some of the advantageous mechanisms of improved plant growth. Sustainable agriculture depends on the interaction between plants and microbes, and these microbes may play a crucial role as ecological engineers in lowering the use of chemical fertilizers. Inoculum preparation, the addition of cell protectants like glycerol, lactose, and starch, a suitable carrier material, appropriate packaging, and the most effective delivery techniques are some of the steps involved in producing a solid-based or liquid biofertilizer formulation. Furthermore, entrapment/microencapsulation, nano-immobilization of microbial bioinoculants, and biofilm-based biofertilizers are examples of recent formulation advancements. Thus, using the resources at hand, inoculation with advantageous microbes has become a cutting-edge, environmentally friendly method of feeding the world's population. By analyzing the effectiveness of algal consortium-based biofertilizers and comparing them with traditional synthetic fertilizers, this paper highlights their advantages, challenges, and future research directions in sustainable agriculture.