Carboxim Tiram fungicide effect in wheat seeds physiological quality (<i>Triticum aestivum</i> L.)

Abstract

The study aimed to evaluate the influence of different concentrations of the fungicide Carboxim Tiram on the physiological quality of wheat cultivars CD 111 and CD 108 of COODETEC. The seeds were treated with the fungicide, inp the recommended commercial doses (270 mg ai L^-1) at a dose above (360 mg ai L^-1), below (180 mg ai L^-1) and control (0 mg ai L^-1) with untreated seeds. The seeds with and without treatments were planted in paper rolls and taken to the biological growth chamber (BOD) at 25 º C ± 1. The experiment was conducted in an experimental randomized block design with 4 treatments and three replications of 50 seeds per replicate. The following tests were made: germination test (TG), first count germination (PCG), electrical conductivity (EC), shoot length (SL) and root length (RL), fresh matter of shoot (FMAP) and fresh mass of root (MFR), dry matter of shoot (SDM) and root (MSR). It was observed that the fungicide produced negative interference in the germination, and that different doses of fungicide affect the performance of genotypes. In addition, the electrical conductivity increased in function of the concentration of the fungicide Thiram carboxim.