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rdfs:label "Water Soluble NO3-Nitrogen, PO4-Phosphorus, and Total Salt Balanced on a Large Irrigation Tract (PDF)"^^xsd:string .
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dc:title "HTML Summary of #185 \n\nWater Soluble NO3-Nitrogen, PO4-Phosphorus, and Total Salt Balanced on a Large Irrigation Tract\n\n";
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bibo:abstract "Return flow from a 82,030-ha (202,700-acre) tract of calcareous\nsilt loam soils irrigated with water diverted from the\nSnake River in southern Idaho increased the downstream total\nsoluble salt and NO?-N loads, but decreased the downstream\nPO?-P load. Under the existing water management practice,\n50% of the total input water returned to the Snake River as\nsubsurface drainage. Net total soluble salt output was 2.4 metric\ntons/ha (1.0 English ton/acre) and, on the average, was considerably\ngreater than necessary to maintain a salt balance. Net\nNO?-N output was 33 kg/ha (30 lb/acre). Only about 30% as\nmuch PO?-P left the tract via drainage water as entered the\ntract in irrigation water. As water passed through the soil,\nPO?-P was removed by chemical reactions in the soil, thus\ndecreasing the concentration in the subsurface drainage water\nand decreasing the downstream PO?-P load. Applied P fertilizer\nwas not leached into the drainage water."^^xsd:string;
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foaf:name "Soil Science Society of America Proceedings"^^xsd:string;
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