ABSTRACT
Taking alga as a biopesticide not only encircled agricultural commodities but also crucially effective for wastewater bioremediation and enriching soil health. All kinds of algal groups especially cyanophycean alga have excellent proficiency in enriching soil physical and chemical properties as well as crop vigour. Diversity in algal structure notably varies under red, brown, green, blue-green alga. Micro and macro alga have the capacity to biosynthesize several secondary metabolites which act as a potential biopesticide. Though several pieces of literature have been published on this matter accurate information and knowledge are still lagging to the farmers. Organic farmers can use such a strategy by which they can get more yield and better protection without any helps from broad-spectrum industrial attachment. Algal biopesticides are very easy to maintain by giving some small inputs compared to other microorganism based biopesticides. In developing countries small to large industries will now showing their interest in algal biofertilizer, algal sensor, algal biostimulant and algal biopesticide production, which is a good approach for sustainable agriculture.
