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Rapp-Chats
By W. H. Lvne
Extension Agent, Agriculture
Maize Dwarf Mosiac Field Day y will be held at 1:30 p.m. July 30 at Wood Brothers Farm, Wingina, Va.
Here one may see MDM resistant com hybrids as well as results of various chemical controls of Johnson grass host plant for MDM.
The com aphid is the vector of this disease, however insecticides have proven ineffective in its control
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Regulations of the Culpeper Feeder Calf Sale of September 26 are out. You may get your copy by calling this office (675-3619). Nominations must be in July 31.
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2, 4-D is a safe and effective herbicide when used as recommended. It should be applied only to plants you want to kill using low pressure (30-40 pounds per square inch) equipment that will apply a wet spray (no mist) when there is no, or very little, breeze.
It is safe to use in apple orchards. Always use a low volatile form. Butal esers are more tricky - avoid using this form. Some plants and trees are more susceptible to 2, 4-D than others. Never use this chemical near tomatoes or grapes. Also, use with caution near oaks, locusts and dogwood. Some dogwoods have been known to be killed by 2, 4-D, also wisteria. Based upon my experience, I feel this , more the result of 2, 4-D being in careless hands. Rappahannock being an apple county our people are accustomed to mixing sprays at x amount of chemical per 100 gallons of water. When applying 2, 4-D to crop or pasture land, one must first determine the amount of water his sprayer is putting out per acre when driving at x miles per hour and usually a x pounds of pressure. Then, and only then, use the prescribed
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