Browsing by Author "Rost, C. O."
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Item The adequacy of major plant nutrients in certain Minnesota soils under a soils management program(University of Minnesota. Minnesota Agricultural Experiment Station, 1949-06) Toogood, John A.; Rost, C. O.Item Better soils for better living(University of Minnesota. College of Agriculture. Extension Division, 1948-04) Burson, Paul M.; Harris, R. S.; Rost, C. O.Item Comparative Value of Rock Phosphate and Superphosphate as Fertilizers(Minnesota Agricultural Experiment Station, 1958) Bridgford, Roy O.; Rost, C. O.WHAT IS THE MOST efficient phosphorus fertilizer? The question is not as simply answered as it could have been 8 few years ago. Modern technology has produced many different fertilizers containing phosphorus, but superphosphate is still the backbone of the fertilizer industry. All fertilizer phosphorus comes from phosphate rock-tricalcium phosphate. The phosphorus in the rock is not readily available to crop plants because the natural rock contains 1 to 3 percent of fluorine, and this makes the phosphorus soluble with difficulty. Nevertheless, it has been and still is the practice to grind the rock very finely and use it for fertilizer, since some of the phosphorus becomes available with time. In the fertilizer trade, this finely ground rock is called by various names such as "rock phosphate," "ground rock phosphate," and "raw rock phosphate."Item Fertilizer Grades and Ratios for Minnesota(University of Minnesota. Agricultural Extension Service, 1947-02) Rost, C. O.; Burson, Paul M.; Duncan, E. R.Item Fertilizer Grades and Ratios for Minnesota (Revised 1950)(University of Minnesota. Agricultural Extension Service, 1950-01) Rost, C. O.; Burson, Paul M.; Duncan, E. R.; Jones, H. E.Item Influence of fertilizers on composition and quality of sugar beets(University of Minnesota. Minnesota Agricultural Experiment Station, 1949-04) Dunn, L. E.; Rost, C. O.Item Influence of fertilizers on four legumes when grown as green manures(University of Minnesota. Minnesota Agricultural Experiment Station, 1952) Baker, Donald G.; Rost, C. O.; Kramer, H. W.Item Liming for alfalfa in southeastern Minnesota(University of Minnesota. College of Agriculture. Extension Division, 1926-03) Alway, F. J.; Rost, C. O.Item Mixing fertilizers on the farm(University of Minnesota. College of Agriculture. Extension Division, 1932-01) Nesom, G. H.; Rost, C. O.Item Soil Fertility and conservation: a Minnesota program(University of Minnesota. College of Agriculture. Extension Division, 1947-03) Burson, Paul M.; Rost, C. O.; Duncan, E. R.Item Soil Management Studies on the Webster Soils of Southern Minnesota(Minnesota Agricultural Experiment Station, 1957) Rost, C. O.; Kramer, H. W.Item Sulfur Fertilization of Oats in North Central Minnesota(Minnesota Agricultural Experiment Station, 1958) Rost, C. O.; Evans, C. A.; Kramer, H. W.