Effect of Ammonium Sulfate, Marl, Lime and Carboxin on Sclerotium blight of Wheat

Abstract

Sclerotium blight is a major soil born disease of wheat in the northeastern part of Thailand. This fungus has a wide host range and infects the host at all stages particularly at seeding stage. The study was conducted to determine the effect of ammonium sulfate, marl, lime and carboxin to control the sclerotium blight at seedling stage. The treatments were ammonium sulfate at 5, 10, 15 and 20 kg N/rai; marl and lime at 100, 200, 300, 400 and 500 kg/rai; carboxin 0.15 g/kg seed.
Carboxin decreased the disease by 53.2% whileas ammonium sulfate increased the disease by 4.25 to 11.25% ecompared with control. However, marl and limea t 300-500 kg/rai could control the disease by 22-24% and 24-30%, repectively. It is concluded that carboxin, lime and marl can be used to control this disease at seedling stage.