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in the soil for diagnosis and prediction of nematode disease problems. Control recommendations also are made.
The pesticide residue laboratory provide data for the identification and qualitative as well as quantitative information on pesticide residue.
For example, if a herbicide has been applied on a com field, can another type of crop be planted on this same field and not be damaged? The laboratory works in conjunction with the State Water Control Board and Consolidated Laboratories in Richmond, if needed, when a state emergency arises involving pesticide residues.
The plant disease clinic identifies diseases and nematodes and provides control recommendations for fruit, vegetable, field, turf, tree or ornamental crops.
The Virginia Crop Improvement Association, Richmond, works with Extension. It is responsible for the seed certification in Virginia, with the exception of hybrid corn.
Certified seed provides the basis for most of the field seed plants. The program has been responsible for the identification of high quality seed and the control of certain seedborne diseases. It maintains a foundation seed farm that is responsible for the increase of new varieties released by the Virginia Tech Experiment Stations and the maintenance of economically important varieties.
The Virginia Sheep Evaluation Station conducts a yearling ram performance test and ram lamb performance test. It is located at Steeles Tavern.
The chemical, drug and pesticide unit offers a consulting and referral service for questions about these items. It also operates VPIRS (Virginia Pesticide Information Retrieval System) which is a comprehensive computer information system on many agricultural
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