Bahuguna, AyushSharma, SachinRai, AshishBhardwaj, ReshuSahoo, Sanjib KumarPandey, AsthaYadav, Bharti2025-01-272025-01-272022978-032385581-5; 978-032385582-2https://dl.bhu.ac.in/ir/handle/123456789/14547Biostimulants are substances, different from fertilizers, which stimulate plant growth when applied in minute quantities. They are increasingly used in worldwide agricultural production and can effectively contribute to overcoming challenges imposed by the increasing world population. These environmentally friendly and natural substances promote vegetative growth, mineral nutrient uptake, and tolerance of plants to abiotic stresses. In the modern agriculture system, biostimulants are obtained from the different communities of naturally occurring microorganisms and the biochemical products produced by them such as organic acid, proteins, enzymes, and hormones. These substances when interacting with the plant-soil continuum enhance the availability or uptake of essential nutrients that are applied in the form of fertilizers or that are already existing in soil or crop residues. The other advanced technology used by different manufacturers is nanosurfactant additives, protein hydrolysates, humic acid, and seaweed with their different modes of action. So, in the current perspective, the use of these advanced technologies in organic farming will help to increase crop productivity, and soil fertility, protect against pathogens, and in turn, increase the income of the farmer. � 2022 Elsevier Inc. All rights reserved.Biostimulantsenzymehumic acidseaweedBook chapterhttps://doi.org/10.1016/B978-0-323-85581-5.00010-0