NOVELTY - Use of animal and plant residues and other organic wastes is claimed for preparing fertilizer comprising nitrile based esters, phosphorus and potassium as active substances by adding microbial inoculum to the wastes, fermenting mixture, selecting suitable inorganic and organic inducers, modulating, blending, crushing and homogenizing mixture, inducing microbial inoculum to ferment, decomposing organic wastes and blending fermented product.    USE - The animal and plant residues and other organic wastes is useful for preparing fertilizer (claimed).    DETAILED DESCRIPTION - Use of animal and plant residues and other organic wastes is claimed for preparation of fertilizer comprising nitrile based esters, phosphorus and potassium as active substances. The fertilizer is prepared by adding microbial inoculum to the organic waste, subjecting obtained mixture to fermentation process, selecting suitable inorganic and organic inducers based on fermentation enzymes, subjecting obtained mixture to modulating, blending, crushing and homogenizing processes based on mixing ratio, inducing the microbial inoculum to ferment, thoroughly decomposing organic wastes and blending fermented product to obtain the fertilizer. The organic wastes comprise animal and/or plant residues, residual hairs, residual bones, residual grease, residual nucleus, shells, egg shells, leaves, straw, bran, rice husk, dry bread, soybean, flour, fruit and weeds. The inducer comprises carboxamide, phosphoric anhydride, potassium sulfate, magnesium sulfate, sodium tripolyphosphate, diethanolamine, hydroquinone and phosphate. The microbial inoculums comprises Cellulomonas flavigena, Lactobacillus casei, Flavobacterium johnsoniae, Rhizobium leguminosarum, Aspergillus niger, A.oryzae, Humicola insolens, Burkholderia cepacia and Rhizopus oligosporus variety tuberosus. The organic wastes are processed by crushing and sterilizing the organic wastes, maintaining moisture content of the organic waste at 60-65%, adding 1500-2000 g/T fermentation inducer to the processed organic waste, adding 80-120 g/T fermentation activating agent, performing fermentation at pH of 5.6-6.2 for 15 days, turning fermentation mixture for 2-3 times during the fermentation process, and further adding 5-10% fermented mushrooms residue, 6-10% straw ash and 600-1000 g/T arbuscular mycorrhizal inoculants comprising Glomus mosseae, G.etunicatum and G.versiforme in a weight/weight ratio of 3:3:2 during the fermentation process as per requirement to obtain final product. An INDEPENDENT CLAIM is included for method for preparing the above-mentioned fertilizer, which involves decomposing the above-mentioned organic wastes, subjecting the decomposed organic wastes to fermentation using fermenting agents at 25-30 degrees C for 5-8 days where the fermenting mixture is turned once a day during the fermentation process.