Phosphorus in Surface Runoff from Calcareous Arable Soils of the Semiarid Western United States
نویسندگان
چکیده
منابع مشابه
Phosphorus in surface runoff from calcareous arable soils of the semiarid Western United States.
Management strategies that minimize P transfer from agricultural land to water bodies are based on relationships between P concentrations in soil and runoff. This study evaluated such relationships for surface runoff generated by simulated sprinkler irrigation onto calcareous arable soils of the semiarid western United States. Irrigation was applied at 70 mm h(-1) to plots on four soils contain...
متن کاملColloidal phosphorus in surface runoff and water extracts from semiarid soils of the western United States.
Colloidal particles in runoff may have an important role in P transfer from soils to waterbodies, but remain poorly understood. We investigated colloidal molybdate-reactive phosphorus (MRP) in surface runoff and water extracts of calcareous arable soils from the semiarid western United States. Colloidal MRP was determined by ultrafiltration and operationally defined as MRP associated with parti...
متن کاملOrganic Phosphorus Composition and Potential Bioavailability in Semi-Arid Arable Soils of the Western United States
the need to understand the nature of organic P in these soils. The organic P composition of semi-arid arable soils is largely unSoil organic P determination has traditionally been known, but such information is fundamental to understanding P dynamics in irrigated agriculture. We used solution 31P nuclear magnetic hampered by difficulties with the extraction, separation resonance (NMR) spectrosc...
متن کاملRelationship of soil test phosphorus and sampling depth to runoff phosphorus in calcareous and noncalcareous soils.
A study was initiated to investigate the relationship between soil test P and depth of soil sampling with runoff losses of dissolved molybdate reactive phosphorus (DMRP). Rainfall simulations were conducted on two noncalcareous soils, a Windthorst sandy loam (fine, mixed, thermic Udic Paleustalf) and a Blanket clay loam (fine, mixed, thermic Pachic Argiustoll), and two calcareous soils, a Purve...
متن کاملPhosphorus Losses in Runoff from Virginia Soils
Previous research shows that dissolved P losses in runoff are well related to soil test P (STP), thus, various P loss prediction models incorporate the use of a STP vs. runoff DRP relationship. However, the relationship between STP and runoff DRP will vary based on soil type due to differences in soil properties. The purposes of the first two studies were to (i) investigate the effect of soil m...
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ژورنال
عنوان ژورنال: Journal of Environmental Quality
سال: 2004
ISSN: 0047-2425
DOI: 10.2134/jeq2004.1814