Long-term Cropping Effects on Partitioning of Water Flow and Nitrate Loss between Surface Runoff and Tile Drainage

Journal of Environmental Quality
A L WoodleyT O Oloya

Abstract

Surface runoff and tile drainage are the main pathways for water movement and entry of agricultural nitrate into water resources. The objective of this 5-yr study was to characterize the partitioning of water flow and nitrate loss between these pathways for a humid-temperate Brookston clay loam soil under 54 to 59 yr of consistent cropping and fertilization. Cropping treatments included monoculture corn ( L., MC), continuous bluegrass ( L.) sod (CS), and a corn-oat-alfalfa ( L.)-alfalfa rotation (RC-RO-RA1-RA2). Fertilization treatments included annual fertilizer addition (F) and no fertilizer addition (NF). Tile drainage and surface runoff occurred primarily during the nongrowing season (November-April), and they were highly correlated with the mean saturated hydraulic conductivity of the near-surface soil profile. Tile drainage accounted for 69 to 90% of cumulative water flow and 79 to 96% of cumulative nitrate loss from fertilized rotation and CS, whereas surface runoff accounted for the majority of the nitrate losses in MC (i.e., 75-93% of water flow and 65-96% of nitrate loss). Cumulative nitrate losses were highest in the RC-F (152 kg N ha), RC-NF (101 kg N ha), RA2-F (121 kg N ha), and RA2-NF (75 kg N ha) plots, and thes...Continue Reading

References

Apr 5, 2001·Journal of Environmental Quality·G W Randall, D J Mulla
Sep 10, 2004·Journal of Environmental Quality·E J KladivkoN R Fausey
Jan 6, 2010·Journal of Environmental Quality·Donald W MealsThomas E Davenport
Nov 11, 2011·Environmental Science & Technology·William M LewisHans W Paerl
Jan 21, 2015·Journal of Environmental Quality·C F DruryJ D Gaynor

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Citations

Oct 8, 2019·Journal of Environmental Quality·Douglas R SmithRick L Haney
Oct 8, 2019·Journal of Environmental Quality·Jeffrey A VetschFabián G Fernández
Apr 11, 2021·The Science of the Total Environment·Jessica R AyersChristopher Jones
Jun 24, 2020·The Science of the Total Environment·Ward SmithClaudia Wagner-Riddle

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