It has always been a challenge to get current pest management information to growers on a timely basis. Traditionally, we have used several types of media including newsletters, winter and in-season meetings, field tours and publications.
With the onset of the Internet, we now have another powerful information delivery tool — Websites. Over the past couple of years, we have created several Websites that provide information and recommendations for managing insect pests of soybeans, wheat, cotton and peanuts. Following are the site addresses and a brief description of what each contains.
http://www.vaes.vt.edu/tidewater/faculty/herbert/advise.html — This is the site on my homepage where I post current advisories and information throughout the season. Checking this site on a weekly basis during the season will give you access to any advisories or new insect pest developments that I put up. For example, from about the end of July through mid-September, I write a Corn Earworm Advisory that presents moth trap catch information, observations on field infestation levels in soybeans, peanuts and cotton, and recommendations for management.
http://www.ext.vt.edu/pubs/cotton/424-200-01/424-200-01.html#L7 — This address takes you directly to the Insect Control section of the Virginia Cotton Production Guide, VCE (Virginia Cooperative Extension) Publication 424-200. It presents economic thresholds, control decision aids, and current (updated annually) chemical control recommendations for the common insect pests that attack Virginia cotton.
http://www.vaes.vt.edu/tidewater/peanut/insect.html — Similar to the above, this address takes you directly to the Insect Control section of the Virginia Peanut Production Guide, TAREC Info. Ser. No. 430, and presents thresholds and current chemical control recommendations for the many insect pests of peanut.
http://www.isis.vt.edu/cgi-bin/scrRisk — This site is unique in that it presents the user with the opportunity to use the Southern Corn Rootworm Risk Index for peanuts. By selecting the appropriate soil type, soil drainage class, cultivar and planting date, it immediately calculates the numerical risk level (less than 40 = low risk; 40-50 = moderate risk; above 50 = high risk) of each peanut field entered. This allows peanut growers to assess the risk of yield loss to rootworm and the need for an insecticide treatment for each individual peanut field.
http://www.ext.vt.edu/pubs/entomology/444-770/444-770.html — This site presents the publication, ‘Corn Earworm: Biology and Management in Soybean’, VCE Publication 444-770. It includes sections that describe the life stages of corn earworm, the life cycle and crop response to injury, predicting outbreaks, management, field scouting techniques, and economic thresholds.
http://www.ipm.vt.edu/cew/ — This site presents the ‘Corn Earworm Calculator’ that allows the user to rapidly calculate the economic threshold for corn earworm in soybeans. The user enters the sampling device of choice (sweep net or beat cloth), the row spacing used, the number of earworms captured in the sweep net (no. per 15 sweeps) or beat cloth (no. per row foot), the estimated per acre control cost (insecticide + application cost), and the estimated bushel value of the beans at time of sale. With this information, the calculator delivers an instant threshold that is truly an ‘economic’ threshold which is sensitive to changes in control costs and crop value. It is also a good educational tool for seeing how thresholds are affected by changing control costs and crop value.
http://www.vaes.vt.edu/tidewater/soybean/soyproduction/soyguide.html#L6 — This address takes you directly to the Insect Control in Soybeans section of the Virginia Soybean Production Guide, TAREC Info Ser. No. 443 and presents thresholds and chemical control recommendations for the many insect pests that can be encountered in Virginia soybean fields.
http://www.ext.vt.edu/pubs/entomology/444-018/444-018.html — This site presents the publication, ‘Aphids in Virginia Small Grains: Life Cycles, Damage and Control’, VCE Publication 444-018. It includes sections that describe the grain aphid species normally encountered in Virginia wheat and barley fields, their life cycles and crop damage, predicting outbreaks, natural enemies, and control recommendations.
http://www.ext.vt.edu/pubs/entomology/444-350/444-350.html — This site presents the publication, ‘Cereal Leaf Beetle: Biology and Management’, VCE Publication 444-350. It is unique in that it was co-authored with John Van Duyn at North Carolina State after a cooperative three-year field research project that took place in over 22 field studies in the two states. It includes color photos of adult beetles, eggs, larvae and a series on crop damage. Beetle biology is discussed as well as field scouting techniques and the new economic threshold.
Taking advantage of these sites will help keep you up to date and informed.