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Nitrate leaching from a small, underdrained, grassland, clay catchment
Author(s) -
Haigh Rosalyn A.,
White R.E.
Publication year - 1986
Publication title -
soil use and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.709
H-Index - 81
eISSN - 1475-2743
pISSN - 0266-0032
DOI - 10.1111/j.1475-2743.1986.tb00683.x
Subject(s) - leaching (pedology) , grassland , environmental science , fertilizer , nitrogen , agronomy , zoology , nitrate , hydrology (agriculture) , soil water , soil science , chemistry , geology , ecology , biology , geotechnical engineering , organic chemistry
. Losses of nitrogen in the tile drainflow from a clay soil (Evesham series) under grazed grassland were monitored during the 1982/83 and 1983/84 drainflow seasons. In 1982/83, 40% of the discharge had a NO 3 − concentration > 11.3 mgNl −1 , while in 1983/84 concentrations were always > 20 mgNl −1 . Total N lost by leaching was 17.5 and 48.7 kg ha −1 in 1982/83 and 1983/84 respectively, which was equivalent to 9 and 43% of the fertilizer applied. The marked difference in N losses for the two seasons was attributed to differences in the quantity and timing of N fertilizer applications, the dryness of the preceding summer and the duration and density of stocking.