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Aberdeen Substation Agricultural Experiment Station alfalfa alfalfa hay apple barley bean beet beet leafhopper breeding Bulletin bushels per acre Caldwell Substation carotene cent phosphorus chicks common bean cooperation cottonseed meal County cows crested wheat crop cultural curly top cwts Dairy Husbandry Department of Agriculture disease fallow farmers fattening Federation feed fertility field forage fruit grams growers herd High Altitude Substation Holstein-Friesian hybrid Idaho Agricultural Experiment increase indicate infection investigations irrigated laboratory lambs land legumes manure mastitis meadow fescue meal method milk milligrams mosaic Moscow Mosida nitrogen nursery orchard grass pasture peas Petrocide phosphorus plants plats plots plowing potatoes pounds per acre produced protein pyrethrum ration red clover resistance rotation samples Sandpoint Sandpoint Substation seed yields seedlings soil southern Idaho sprays spring wheat steers Substation substation farms sulfanilamide sweet clover treble-superphosphate U.S. Department University of Idaho variety test vitamin winter wheat