INTERACTION BETWEEN POTASSIUM SILICATE AND TRICHODERMA HARZIANUM IN WHEAT DEVELOPMENT AND RUST CONTROL

Abstract

The objective of this work was to verify the effects of using potassium silicate and Trichoderma-based biological products on the growth, yield, and reduction of leaf rust severity in wheat crops. The experiment was conducted in pots in the greenhouse of the Federal University of Santa Maria. The experimental design used was randomized, with seven treatments and four replications, each pot containing three plants. The products used were Trichodermil® and potassium silicate. The treatments were: T1 - No application; T2 - Fungicide; T3 - 1.5 L.ha^-1 of K silicate; T4 - 2.5 L.ha^-1 of K silicate; T5 - Trichodermil®; T6 - Trichodermil® + 1.5 L.ha^-1 of K silicate; T7- Trichodermil® + 2.5 L.ha^-1 of K silicate. This work concludes that Trichoderma harzianum and potassium silicate increase the number of profiles, decrease the severity of Puccinia triticina, and increase productivity.