Crop Parasitic Nematode Diagnostics and Applied Research at the Tidewater AREC
Plant parasitic nematodes are a major constraint to agronomic crop production throughout the southeastern United States. However, nematode impacts on crop production are often overlooked and the efficacy of nematode management strategies including host resistance, crop rotation, and chemical or biological control depends on the specific nematode species present and their distributions within fields. Nematode diagnostic services are available at the Virginia Tech campus in Blacksburg, but many growers in the coastal plain region, where a majority of agronomic crops are grown and where sandy soils increase the risk of nematode problems, do not utilize this service due to a lack of awareness, inconvenience, and cost. Even though many growers perceive nematodes as the major “disease” problem impacting their crops, nematode diagnostic services are greatly under-utilized in the state of Virginia. However, Virginia cotton, peanut, and soybean growers indicated they would use nematode diagnostic services if they were available in the southeastern portion of the state.
To fill the gap in nematode diagnostic services and applied research for agronomic crops in Virginia, we established a Nematode Diagnostic Lab at the Tidewater AREC. Since 2016, funding for the nematode lab and nematode management research has been provided by Cotton Incorporated, Virginia Cotton Board, Virginia Soybean Board, and Virginia Corn Board. In addition we have received an IPM Enhancement grant to re-evaluate nematode economic thresholds for agronomic crops in Virginia. Diagnostic and predictive nematode assays are being run for cotton, soybean, and corn growers free of charge as long as commodity boards are able to support the work. In addition, a survey of parasitic nematodes associated with cotton, soybean, and corn cropping systems is being conducted so that the distributions of economically important nematodes can be determined.
In 2018, numerous nematode soil samples were collected and processed at the Tidewater AREC. These included research, survey, and diagnostic samples. Growers were provided with nematode assay results and management recommendations. The most important nematodes in cotton cropping systems were identified and on-farm trials are being conducted in 2019 in cooperation with growers throughout Virginia. In 2018, over 400 nematode soil samples were collected by Extension agents, TAREC staff, growers, and consultants and processed at the Tidewater AREC. For each of these samples, clientele were provided with nematode assay results and management recommendations. Grower awareness of nematode problems (where they are occurring and where they are not) has increased as has grower interest in testing fields prior to applying nematicides.
•Cotton, peanut, and soybean agronomy
•Plant pathology of vegetables and row crops
•Row crop entomology
•Swine reproductive physiology and management
•Plant parasitic nematode management
•Drones for precision spraying and to assess plant stress
•Variable rate and micro-irrigation for row crops
•Teralytic soil probes to measure soil parameters real time
•34 buildings, including a new pesticide storage and disposal facility
•Peanut, cotton, corn, soybean, and small grain associations
•Agricultural chemical, seed, and fertilizer industries
- Virginia Cotton Production Guide 2016
- Soil Managment and Fertility Seminar Information
- Proceedings - Small Scale and Niche Market Pork Production 2014 (PDF | 1MB)
- Applied Research on Field Crop Disease Control 2013
- 2013 Tri-State Grain Sorghum Performance Tests
- 2013 Peanut Variety and Quality Evaluation Results - Agronomic and Grade Data
- 2013 Peanut Variety and Quality Evaluation Results - Quality Data
- Growing 'Titan': A Large-Seeded, Virginia-Type Peanut for Specialty Markets
- Peanut/Cotton InfoNet
Crop management information including peanut leaf spot and frost advisories.
- Virginia Peanut Production Guide-2014
- Pest Management Guide-2012
Pest Management for Field Crops 2017