Controlling of Covered Smut on Wheat by Iraqi Sulfur Foam

Abstract

A study was conducted in Neneva and Sulaimaniya, using sulfur foam, by – product of sulfur refineries to control covered smut disease of wheat caused by Tiltetia foetida, T.caries. Results showed that Foam at rate of 30-40 gm/kg. Seeds were effective with rate of infection in Neneva 36.79, 34.08, 10 % respectively while it reached 27.73, 22.73, 16.50 % in Sulaimaniya respectively, but it did not as effective as Dithane S – 60, the fungicide commonly used in Iraq. Foam had not negative significant effect on seed germination and plant Length in the field, Treatment with Foam significantly increase the yield by rate of 40%.