Organic agriculture has become a rising topic nowadays for control of soil pollution, degradation and to ensure food security. Organic manures and bio fertilizers play a vital role in that process. Vermicomposting tea is a liquid organic bio fertilizer and it is composed of plant nutrient, plant hormone and microorganism (aerobic microorganisms) such as beneficial bacteria and fungi which enrich soil. Aerobic microorganisms present in vermicomposting tea helps in disease suppression and application of vermicomposting tea will promote plant growth. Vermicomposting tea can be defined as the mixture of aerobic microbes present in vermicomposting with aerated water. These characters of vermicomposting tea helps to use it as liquid biofertilizer, or can be used in biochar activation or charging and can be used as a substrate for hydrophonics system. Tea brewers are used to brew vermicomposting tea. Fresh vermicomposting tea contain more aerobic microbes but with the time the quality of tea become lower and need to add some materials like molasses, brown sugar and need frequent aeration as the aerated tea is more stabilized and give good results in crop production. There are several advantages of such as it is a liquid bio fertilizer which can easily apply, enrich soil with beneficial microbiota, great source of macro and micro nutrients, boosts rhizosphere microbial activity. The limitation is that difficulties in maintain quality while storage but it has great potential to be use in organic agriculture with low cost, eco-friendly and in an efficient way.

In the contemporary generation, rapid urbanization, industrialization, and declining woodland lead to global weather modifications. The massive scale of deforestation for firewood, constructions, paper products, textile, and plenty of different packages are steadily enforcing a critical poor impact on the surroundings. Inherently, plant cellulose has restrained utility because of the presence of hemicellulose and lignin. Consequently, studies in the discipline of microbial cellulose display many benefits over plant cellulose. It possesses numerous crucial and unique properties compared to plant cellulose, including high purity, better absorptivity, excellent polymerization, crystallization, in-situ mold potential, biodegradability, biocompatibility, and plenty of others. This assessment looks into a potent cellulose producer to develop an economically feasible manner for huge-scale production of microbial cellulose therefore, it may replace some of the requirements where plant cellulose has been currently in use.

Algae are a great source of mineral salts, vitamins, proteins and trace metals necessary for human metabolism. Interest of introducing algae into human nutrition in western countries has increased in recent years. Humans can also consume algae indirectly because they are a source of different compounds used in the food industry such as agar, alginate, carrageenan, furcellaran, mannitol, pigments and fatty acids. These compounds are mainly utilized in the pharmaceutical and food industries with immense importance. In recent years, the application of algae extracts plays a major role as fertilizers in the enhancement of plant growth in agriculture industry. This review discusses the micro- and macroalgae applications in the industries for human and animal consumption, besides the use of algae extracts for the production of fertilizers.

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