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acres activities additional administration agencies Alaska alfalfa allotments amount animals annually areas Bang's disease beetle Beltsville breeding Budget Bureau Bureau of Entomology Camp CANNON carried cattle chemical commercial conducted conservation cooperation cost cotton crops Department determine DIRKSEN disease economic effect emergency funds equipment eradication estimate experiment stations extension farm farmers Federal fertilizer field fiscal year 1938 Forest Service fruit GABRIELSON Government GREGG important improvement increase industry infested insecticides insects investigations Japanese beetle JARDINE June 30 laboratory land LEAVY lignin materials McCall ment methods Mohler national forests necessary parasites percent personnel pests pine plants present problems production Puerto Rico purchase purpose quarantine region RICHEY screwworm Secretary of Agriculture seed SILCOX soil Soil Conservation Service species statement studies surveys TARVER THOM timber tion trees tuberculosis UMSTEAD United various weather wildlife