**Abstract**

The research proposes a biofertiliser from mycorrhiza and rhizobium evaluating its antagonistic capacity and biotisation in the cultivation of vegetables with a DCA, the sample considers the potato, pea, and barley in the Huasahuasi Peruvian District, with nine treatments in three formulas, considering a control group without inoculation and two repetitions. As a result, the optimal formula is obtained with 300 g of mycorrhizal and rhizobium strains + 500 g of black soil + 200 g of potato peel crust, which has an effective antagonistic capacity of 100% in pea cultivation, 90% in the barley, and 85% in the potato, besides that it achieves a biotisation in the cultivation of peas of 95%, in the barley 100% and in the potato 90%.

**Keywords:** biotisation, biofertiliser, mycorrhiza, rhizobium, vegetables
