Treffer 1 - 10 von 10 für Suche 'Harper, Horace J.', Suchdauer: 0,10s Treffer weiter einschränken
  1. 1
    Experiments on fertilization of cotton, alone and in rotations and with green manure crops, on three central Oklahoma soils, 1927 - 1958

    Experiments on fertilization of cotton, alone and in rotations and with green manure crops, on three central Oklahoma soils, 1927 - 1958 von Harper, Horace J.

    Veröffentlicht 1960
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  2. 2
    Acid soils in Oklahoma where they are located and how they farm

    Acid soils in Oklahoma where they are located and how they farm von Harper, Horace J.

    Veröffentlicht 1947
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  3. 3
    Nitrogen fertilization of corn with supplemental irrigation cooperative trials at 5 locations in central and eastern Oklahoma ; 1947 - 1953

    Nitrogen fertilization of corn with supplemental irrigation cooperative trials at 5 locations in central and eastern Oklahoma ; 1947 - 1953 von Brensing, O. H., Harper, Horace J.

    Veröffentlicht 1960
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  4. 4
    Effect of ammonium nitrate as a fertilizer for spinach

    Effect of ammonium nitrate as a fertilizer for spinach von Harper, Horace J., Cross, Frank B.

    Veröffentlicht 1945
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  5. 5
    Improvement of flood-damaged land in eastern Oklahoma

    Improvement of flood-damaged land in eastern Oklahoma von Harper, Horace J.

    Veröffentlicht 1944
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  6. 6
    The effect of lime and various fertilizers on winter barley in a rotation with sweet clover

    The effect of lime and various fertilizers on winter barley in a rotation with sweet clover von Harper, Horace J.

    Veröffentlicht 1960
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  7. 7
    A 17-year comparison of four tillage methods for winter wheat in a rotation

    A 17-year comparison of four tillage methods for winter wheat in a rotation von Harper, Horace J.

    Veröffentlicht 1960
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  8. 8
    Sulfur content of Oklahoma soils, rainfall and atmosphere

    Sulfur content of Oklahoma soils, rainfall and atmosphere von Harper, Horace J.

    Veröffentlicht 1959
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  9. 9
    Effect of fertilizers on soil acidity and alkalinity

    Effect of fertilizers on soil acidity and alkalinity von Harper, Horace J.

    Veröffentlicht 1947
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  10. 10
    Crop adaptation to soils of varying acidity or alkalinity

    Crop adaptation to soils of varying acidity or alkalinity von Harper, Horace J.

    Veröffentlicht 1947
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