Transactions of the ASAE · 1985 · 16 citations · 0 references
AgricultureAgronomySoil SciencesIrrigation ManagementSoil FertilitySoil-water RelationsAgricultural Drainage SystemsDrainage In Irrigated AgricultureDrainage Water QualityIrrigationNutrient RunoffSoil-water ManagementAgricultural DrainageAgricultural Nutrient RunoffIrrigation Drainage Water QualityPhosphorus Loss Through DrainageSubsurface Irrigation SystemsSurface Drainage Water QualitySurface Runoff ProcessesSurface Water Drainage
ABSTRACT NITROGEN and phosphorus losses were measured from a sandy, high-water-table soil in Florida used for potato production under two water management systems. These were a water-furrow irrigation system with surface drainage only and a subsurface drainage-irrigation system with surface runoff. Total flow volumes were very similar from both management systems. Subsurface drainage accounted for 80% of the water loss from that plot. Nitrate nitrogen and P04-P losses were greater from the water-furrow plot than from the subsurface-drained plot. These results may have been influenced by the interactions of the controlled high watertable and the raised row-beds with the water management systems