An experiment was conducted both in in vitro and in situ during 2018-19 at Sam Higginbottom University of Agriculture, Technology And Sciences, Prayagraj. Under in vitro conditions, the shelf-life of fruit peel formulation of Trichoderma sp. and talc based formulation were evaluated up to 45 days at room temperature (25-30°C). Among them, pineapple peel formulation of Trichoderma sp. (×10⁸ cfu/g) showed longer shelf-life than that of the normal talc based formulation (×10⁸ cfu/g). | Shelf-life evaluation of trichoderma sp. on agricultural waste materials