OCR Text |
Show New Insecticides Nip Resistant Fly Have Low Toxicity To Stock and Humans Mixtures ol sugar and organic phosphate insecticides that can be shaken like salt onto floors oi livestock live-stock buildings are showing great promise as a method of controlling control-ling flies resistant to such chlorinated chlor-inated hydrocarbon insecticides as TVDT rennrt IT. S. Department of Agriculture entomologists. Three phosphate insecticides malathion, diazinon, and a dialkyl phosphate material were tested at the Orlando, Florida, laboratory of Dally treatments with sugar-insecticide mixture were easily ac-eomnllshed ac-eomnllshed in test through use of a pint jar fitted with a perforated ltd. In most Instances sugar baits proved more effective than liquid Insecticide baiti. the USDA's Agricultural Research Service during 1953, and all of them provided effective In controlling control-ling DDT-resistant flies. The three phosphates appear to be well suited for farm use against resistant files because they are not only the best fly-killers of several chemicals tested, but have relatively rela-tively low toxicity. In practical tests in dairy barns in the Orlando area, the Department Depart-ment entomologists got excellent control of files by applying the dry sugar bait at the rate of 100 grams (about 3.5 ounces) In each building. They found It necessary to treat five times a week for 2 or I weeks to reduce fly populations to a low level in locations where the pests could breed readily. Enough Insecticide for the entire fly season would cost less than a single residual Insecticide spray, Generally speaking, sesame will grow well on any land that will grow cotton. Production records obtained from farmers cooperating In a testing program for three years indicate the cost of producing one acre of sesame will vary $10 to $25, depending largely upon amount of commercial fertilizer used and management. |