Mark A. McCann

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As computational systems scale to arbitrarily large sizes, and as they are expected to function reliably for arbitrary lengths of time, there are certain realities of the physical world that can not be ignored in the design and modeling of computational systems. For example, considerations for the delivery of power and removal of heat seem to limit the(More)
A high incidence of Tomato spotted wilt virus (TSWV) has occurred in crops in Virginia and other Mid-Atlantic states this season. Be on the lookout for this plant virus in tomatoes, peppers, peanuts, potatoes, and tobacco. The disease also affects numerous weed and ornamental plant species. The virus is vectored by at least 7 different species of thrips. In(More)
Editor's note: the following article was written as a class assignment for Dr. Greg Welbaum's Vegetable Production course at Virginia Tech. Emily provides some good history and information on the CSA marketing option for specialty crop growers. Community Supported Agriculture is a relatively new trend in agricultural production. As mid-sized farms are(More)
When growing vegetables and specialty crops, a soil high in organic matter is very desirable. When examining soils in Virginia, we struggle to find soils that are naturally high in organic matter. Soils with 3 to 5 % soil organic matter would need little additional fertilizer, if any, for producing some crops. Since our native soils don't come any where(More)
The European corn borer, Ostrinia nubilalis Hubner (Lepidoptera: Crambidae), is one of the most economically important pests of agricultural crops in much of the eastern and central United States. O. nubilalis is particularly damaging to sweet peppers (Capsicum annuum L.) because it causes direct injury to the fruit, premature fruit ripening, and fruit rot,(More)
Assoc. Editor's note: Consideration of family relationships, particularly between crops and weeds is important for disease and weed management, regardless of production methodology being used. Knowing which family a plant belongs to can be useful in making decisions about crop rotations for managing pests and soil fertility. Plants that are in a family are(More)
Asparagus will grow well on a sandy loam soil or a heavier soil, as long as it drains well. Try to enrich the soil as much as you can before planting by increasing the organic matter content. Sudax can be seeded and let grow throughout the summer and mowed several times to build up soil organic matter, and then plowed under in the fall. Asparagus should be(More)
This table provides an overview of genera and/or species suitable for field production of cut flowers in the southeastern U.S. (USDA hardiness zones 6 to 8). These are the most widely-grown species. However, there seems a to be a limitless abundance of species with " specialty cut " potential. Species better-suited to cooler climates and/or greenhouse(More)
If you are having trouble making your monthly mortgage payments, you may be able to protect your home, but you must act immediately. Your action may prevent the loss of your home through foreclosure. This Fact Sheet will give you an overview of your options to avoid foreclosure, but it is only the beginning. If you are in serious financial difficulty, you(More)