Effect of biopreparations of agro-industrial and livestock organic waste enriched with Trichoderma harzianum on the forage production of Medicago sativa

Abstract

The production of agro-industrial residues grows significantly every year, and these residues are improperly disposed of, causing environmental problems. On the other hand, the need to reduce the dependence on chemical products in the forage yield in various species is forcing the search for reliable and sustainable alternatives, supported by new technologies, therefore, the objective of this research was to evaluate the effect of biopreparations of agroindustrial and livestock organic residues enriched with Trichoderma harzianum in the forage production of Medicago sativa - alfalfa in the E.E.A. El Mantaro. This technological process began with the obtaining of biopreparations based on biol (75%EV +25%RA), and humus (50% EV+50%RA), which were fermented anaerobically for 3 months. The Trichoderma harzianum culture was prepared on rice substrate starting with a concentration of 5.45E+02 conidia/ml as initial inoculum and ending with a concentration of 3.9E+08 conidia/ml to be incorporated in each biopreparation. The application of the bioformulates enriched with Trichoderma harzianum were applied to the alfalfa crop in demonstration plots. The results show that the incorporation of Trichoderma harzianum in the biopreparations had a significant effect on the growth behavior of alfalfa, which is reflected in the height of the plant, the effect both in height of the plant, forage production, number of stem, basal cover and aerial cover, demonstrating the effectiveness of Trichoderma harzianum in the biopreparations supplied to the alfalfa crop.