White Mice Used in Chemical Tests for Fly Control
Federal entomologists test new chemicals on white mice in a revolving shower bath setup to screen repellents before cattle trials. The process involves a wax cylinder phonograph cage, a sprayed chemical, and a later fly challenges to gauge effectiveness against stable flies and other bloodsucking insects.
MENTIONED IN THIS ARTICLE
U.S. Department of Agriculture
Federal
Soil Protection: Cover Crops Guard Soil in Wet Weather
Rain pounding bare soil destroys surface layers and creates a hard crust that repels water, stealing moisture and topsoil. The Middle West Soil Improvement Committee recommends continuous year round cover, thick grasses and deep rooted legumes, small grains after corn, and practical mulching like corn stalks or soybean tops, with alfalfa and sweet clover to prevent erosion and improve infiltration.
MENTIONED IN THIS ARTICLE
Middle West Soil Improvement Committee
Land Should Be Turned Under for New Legumes
Nebraska extension agronomist D L Gross advises turning soil before the legume’s new growth reduces moisture. Do not plow under clover before crown shoots reach four to six inches to avoid killing the legume.
MENTIONED IN THIS ARTICLE
D. L. Gross
Nebraska University Extension Agronomist
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