Inducción de tolerancia a Globodera spp. con microorganismos promotores de crecimiento en el cultivo de papa (Solanum tuberosum subsp. tuberosum)

Abstract

The effect of inducing tolerance to the attack of Globodera spp. was tested using three fungi (Trichoderma, Pochonia and Pleurotus) and a bacterium (Bacillus), as growth-promoting microorganisms (PGPR) in potato variety Desirée under greenhouse conditions. Cysts were extracted from the infested soil, from the Municipality of Pocona, 25 cysts were infested in each pot during planting, after 30 days the growth-promoting microorganisms PGPR, strains from FCAyP, were inoculated. The research was carried out under a completely randomized design, with 15 treatments and two controls (absolute control and control with nematode), with 8 repetitions. The evaluations were carried out at 70 days, considering the physiological variables: fresh weight of the foliage, and fresh weight of the root, and at 90 days after harvest, the Nematological variables (final population), Agronomic variables (number of tubers and yield) and analysis of mesofauna (population of collembola and mites). The application of growth promoting microorganisms PGPR helped to induce tolerance to the attack of Globodera spp. and also on the physiology of the plant, which was manifested in the crop yield, being two fungi (Pochonia + Pleurotus) combined, they act synergistically helping the plant to tolerate the attack of the nematode, increased by 20% of yield, still being attacked by the plague.

Additional Key Words: Microorganisms, PGPR, Tolerance, Globodera spp, Fungi, Bacteria.