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Show Study Insecticides in Corn-Borer Plan Some Chance of Securing Control Measure for Pest (Prepared by tha Unltod State Dpartaot of AfffloulturO The likelihood of effective control of the European corn borer on a large scale by direct applications of Insecticides Insec-ticides Is remote; nevertheless, the possibility of such control Is worth investigating In the . hope that something some-thing of value In this direction may develop, says tho United States Department De-partment of Agriculture. Moreover, there Is some chance of securing a control which may be practical for the protection of small plots of corn grown for the production of roasting ears for market or table use. A study of the possibility of the use of Insecticides Insec-ticides and moth attractants has been a phase of the corn-borer research program pro-gram almost from the start. In the 1929 research program for corn-borer control there will be close co-operation between the insecticide division of the bureau of chemistry and soils and the bureau of entomology, entomol-ogy, and also with various state workers work-ers and the Dominion of Canada. The development of new Insecticides for corn-borer control Is one of the primary pri-mary objectives of this division, which has already made many analyses analy-ses of Insectlcldal materials and of plants which have been sprayed or dusted with insecticides, to determine the residue left thereon. The bureau of entomology plans to , make a number of experimental tests with the usual Insectlcldal materials and the newer ones recommended. Including In-cluding tests of toxicity, adhesiveness, number of applications, plant toleration, tolera-tion, compatible combinations, and costs. The method of application of each of these materials and the number num-ber of applications with reference to the stage of development of the plant and the Insect, and In relation to i meteorological conditions, are point 1 of importance. |