Liquid organic manures are biological inputs used in organic and low-input farming to recycle locally available resources and support soil fertility. This article describes their characteristics, preparation, functions, application methods, benefits and limitations. It covers traditional Indian formulations, including Jeevamrit, Beejamrit, Panchagavya, Amritpani and Kunapajala, as well as fish amino acid, fermented plant extracts and compost tea. These preparations differ in their ingredients and intended uses: some are applied to treat seeds, while others supply soluble nutrients, provide organic compounds or stimulate microbial activity. Their potential contributions include nutrient mineralization, rhizosphere activity, plant growth and the recycling of agricultural, animal and food-processing residues. Soil application, foliar spraying, seed treatment and irrigation delivery allow their use at different crop stages. However, their nutrient and microbial composition varies with raw materials, preparation, fermentation, storage and application. Many formulations lack standardized nutrient analyses, and poorly handled animal-based preparations may pose hygiene risks. Liquid organic manures should therefore be treated as supplementary components of integrated nutrient management, alongside compost, farmyard manure, crop residues, legumes and green manures, rather than assumed to meet all crop nutrient requirements. Further research is needed to standardize preparation, characterize composition, establish crop-specific application rates, assess long-term soil effects and validate mechanisms of action.