Chemical Control of Sorghum Anthracnose and Grain Mold
Crop Germplasm Research
2013 Annual Report
1a.Objectives (from AD-416):
The objective of this cooperative research project is to identify novel fungicidal formulations to control anthracnose and grain mold diseases in the region.
1b.Approach (from AD-416):
Commercial hybrids treated with new and available fungicidal formulations will be planted in several locations in Texas and evaluated for disease reaction. Data will be analyzed and comparison among the chemical formulations and hybrids based on maturity groupings and other agronomic traits will be conducted.
The goal of this project is to evaluate grain sorghum hybrids in several locations in Texas for vulnerability to grain mold, anthracnose, downy mildew, and other important fungal diseases in the region. In FY 2013, two commercial hybrids, one resistant and one susceptible to anthracnose, were planted at the Texas AgriLife Experiment Station in Burleson County to evaluate disease response and yield following the application of three fungicides (Headline, Quilt, and Topguard). Averaged over the resistant and susceptible hybrids, the Headline treatment resulted in less anthracnose than the other fungicide treatments, or the non-treatment control. The Headline treatment reduced anthracnose in the susceptible hybrid but not in the resistant hybrid. The Headline fungicide treatment did not reduce grain mold on either hybrid. The results established that application of the fungicide Headline can prevent significant yield loss in the presence of anthracnose infection. Work by this project, as it continues, will develop valuable information that will facilitate ongoing efforts by breeders and other researchers to develop new sorghum lines and protocols for more efficient and profitable sorghum production in the U.S.