Fungi associated with Paspalum guenoarum seeds: their impact on physiology and control

ABSTRACT: Of the natural pastures grown in southern Brazil, those of genus Paspalum are most important. One factors that hinder their cultivation is availability quality seeds, often compromised by presence fungi. This study determined vitro sensitivity guenoarum ecotype azulão seed-associated fungus to certain fungicides and measure efficiency chemical treatments for fungal control seed physiological performance. Bipolaris micropus, Epicoccum sorghinum, Curvularia geniculata Fusarium incarnatum associated with seeds were tested against Carbendazim; Tiram, Fludioxonil; Metalaxil-M, Carboxina; Tiram Tiofanato-metílico at 0, 1, 2.5, 5, 10 30 µg/mL. experiment was conducted a completely randomized design (factorial 4 × 6). Qualitative variables compared using Tukey test (P ≤ 0.05) quantitative subjected regression analysis. Metalaxil-M had best fungicidal performances, each inhibiting three four fungi LD50s below 1 Subsequently, these two used alone or combination vivo test. A means < 0.05). The treatment resulted improvement five six evaluated parameters. identification primary reported this research, as well damage done them, can be diminished appropriate measures such treatments.