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General Considerations Regarding Water Solubility
Economic Interpretation of the Importance of Water
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5-row trailer acid adjustments agricultural agronomic agronomists ammoniation ammonium analysis anhydrous ammonia areas budgeting bushels capital cents Chapter coefficients combinations considered corn developed diammonium phosphate dicalcium phosphate dry-type economic economists effects enterprise equation equipment estimated experimental experiments factors farm management farm planning farmers farming situations fertilizer materials granule gravity flow included increase indicate individual input-output inputs investment Iowa Iowa State College isoclines isoquants labor land levels linear programming liquid fertilizers lizers low-income metering pump method mixed fertilizers nitrogen fertilizer nomic nonfarm activities nutrients obtained operator optimal optimum output P2Os part-time farming percent water solubility phosphate phosphoric acid phosphorus plant plots potassium pounds of nitrogen predicted problem procedure production economics production function profit ratio regression relationships relative restrictions soil types solution superphosphate supply tank Tennessee Valley Authority tion unit variable variance watershed yield