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Funded Project |
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Funding Program:
Integrated Pest Management Competitive Grants Program |
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Project Title:
Increasing the Adoption of Alfalfa Weevil Integrated Pest Management in the Western Region
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Project Directors (PDs):
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Lead State: MT Lead Organization: Montana State University |
| Undesignated Funding: $29,997 |
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Start Date: Mar-01-2017 End Date: Mar-01-2018 |
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Pests Involved: Alfalfa weevil |
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Site/Commodity: Montana/forage alfalfa |
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Area of Emphasis: Monitoring, thresholds, IPM |
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Summary:
Alfalfa weevil is the primary economic pest of forage alfalfa, a crop grown on 1.7 million acres in Montana and 17.8 million acres nationally. Extension specialists and agents in Montana agree that the first critical step of Integrated Pest Management (IPM), pest monitoring to determine economic thresholds prior to treatment, is rarely conducted in alfalfa cropland. As much as one-third of the national alfalfa acreage is treated with insecticide primarily to control alfalfa weevil. Insecticide resistant alfalfa weevil reported in Washington in 2016 demonstrates the need for IPM. This project will collect preliminary data to support future multistate proposals designed to increase the adoption of alfalfa weevil IPM in the Western Region. The first objective will implement stakeholder surveys to quantify the current status of alfalfa weevil IPM in Montana, and its impediments. The second objective is a pilot project to monitor alfalfa weevil using an area-wide real-time system that includes Pestweb, a public database developed by Montana State University. Twenty-one agents across Montana will enter larval counts into Pestweb; producers in high-risk areas will receive targeted and timely extension alerts to increase local scouting efforts and provide management information. A degree-day model will be used to synchronize scouting efforts with pest developmental stages predicted by the model. The third objective will research the accuracy of the degree-day model in Montana. Documented stakeholder priorities include “Educate[ing] growers about … threshold-based pest control” and managing insecticide resistance.
Objectives: 1) Conduct surveys to quantify the current status of alfalfa weevil management in Montana and its impediments. Quantitative data of IPM implementation will be used in future grant proposals. 2) Conduct a pilot evaluation of area-wide real-time monitoring of alfalfa weevil populations. Weevil populations monitored and reported in real-time on a public database will generate extension alerts targeted to high-risk areas. 3) Evaluate the accuracy of the degree-day model to predict alfalfa weevil development across different regions of Montana. The degree-day model was developed using the eastern alfalfa weevil strain, its accuracy for the western strain has not been evaluated. |
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