Progress 10/01/10 to 09/30/11
Outputs
Progress Report Objectives (from AD-416) The objective of this cooperative research project is to identify fungicidal formulations to control downy mildew and grain mold diseases in the region. 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 determine if there is significant yield benefit when fungicides are used to control sorghum anthracnose. In FY 2011, two commercial sorghum hybrids [W851 DR (anthracnose resistant) and NC+7R34 (anthracnose susceptible)] were planted at cooperator's facilities in central Texas. Three fungicides [Headline (pyraclostrobin), Quilt Xcel (azoxystrobin), and propiconazole (triazole)] were applied shortly after experimental inoculation with the anthracnose pathogen and before symptom development. Data analysis is underway. On the basis of preliminary interpretation of the data, it is expected that at least one of these fungicides will be able to prevent significant sorghum yield loss in the presence of anthracnose infection. Cost/benefit calculations will establish if applications of fungicide in commercial production settings are both effective and profitable. Over the life of this project, significant accomplishments were made in developing new procedures and protocols for effective management of important sorghum diseases in commercial sorghum production. The ADODR of this project and the cooperator are located in close physical proximity, and were in contact with one another on an ongoing basis during the life of the project. The ADODR and the cooperator (or key personnel working under the cooperator) met to discuss the direction and progress of the project on a regular basis. This project expired in FY 2011.
Impacts
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Publications
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Progress 10/01/09 to 09/30/10
Outputs
Progress Report Objectives (from AD-416) The objective of this cooperative research project is to identify fungicidal formulations to control downy mildew and grain mold diseases in the region. 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 identify new sorghum sources that are resistant to grain mold and grain weathering. In FY 2010, 30 commercial sorghum hybrids were planted at the Texas AgriLife Experiment Station in Burleson County. Three panicles from each replicate were harvested and threshed. The seed was rated on a scale of 1 to 5 for grain mold resistance, with 1 = o mold and 5 = very moldy. The ratings of the hybrids averaged between 2 and 3, so at the Burleson County location and during the 2010 growing season, there were no significant differences in grain mold resistance among the hybrids tested. As the work continues, it is expected to provide additional, useful information on the disease- resistance characteristics of commercial sorghum varieties currently being grown by U.S. farmers, and also important new information on how the ripened grain of these different varieties, prior to harvest, withstands various environmental degradation factors that can greatly affect grain quality and thus overall sorghum productivity and profitability. The ADODR of this project and the cooperator are located in close physical proximity, and are in contact with one another on an ongoing basis. The ADODR and the cooperator (or key personnel working under the cooperator) meet to discuss the direction and progress of the project on a regular basis.
Impacts
(N/A)
Publications
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Progress 10/01/08 to 09/30/09
Outputs
Progress Report Objectives (from AD-416) The objective of this cooperative research project is to identify fungicidal formulations to control downy mildew and grain mold diseases in the region. 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. Significant Activities that Support Special Target Populations The goal of this project is to identify new sorghum sources that are resistant to grain mold and grain weathering. In FY 2009, 33 commercial hybrids were planted in Wharton County, Texas, for evaluation of resistance to both grain mold and grain weathering. Due to high disease pressure, all of the hybrids exhibited significant damage. Thirty hybrids were also planted in Burleson County, Texas, to evaluate for resistance to grain mold and anthracnose. Data collection and analysis are underway. It is expected that sorghum hybrids with either tolerance or resistance to grain mold and anthracnose will be identified by this work. The ADODR of this project and the cooperator are located in close physical proximity, and are in contact with one another on an ongoing basis. The ADODR and the cooperator (or key personnel working under the cooperator) meet and discuss the direction and progress of the project on a regular basis.
Impacts
(N/A)
Publications
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Progress 10/01/07 to 09/30/08
Outputs
Progress Report Objectives (from AD-416) The objective of this cooperative research project is to identify fungicidal formulations to control downy mildew and grain mold diseases in the region. 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. Significant Activities that Support Special Target Populations The goal of this project is to determine the efficacy of commercial and experimental fungicides as seed treatments for control of downy mildew in sorghum. In FY 2008, experimental seed treatment fungicides were evaluated at different rates and singly, or in combination, in field- grown sorghum in Wharton County, Texas. The mean incidence of systemic infection without seed treatment was 20%; seed treated with metalaxyl resulted in 25% infection. Disease incidence with 10-25 g active ingredient per 100 kg seed for the experimental fungicide V-10161 ranged from 10 to 16%. For the experimental product V-10208 at the identical treatment rate, systemic infection was reduced to 4-7%. When seed were treated with a mixture of V-10161 and V-10208 (each at 10-17.5 g active ingredient per 100 kg seed), disease incidence was 4-5%. The results indicate that V-10208, applied singly or in combination with other fungicides to sorghum seed as a pre-planting treatment, can significantly reduce the incidence of downy mildew. The ADODR of this project and the cooperator are located in close physical proximity, and are in contact with one another on an ongoing basis. The ADODR and the cooperator (or key personnel working under the cooperator) meet and discuss the direction and progress of the project on a regular basis.
Impacts
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Publications
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