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- Title
Soil solution nitrogen concentrations in a Japanese lawngrass ( Zoysia japonica Steud.) and a tall fescue ( Festuca arundinacea Schreb.) pasture under cattle grazing.
- Authors
Gotoh, Taishin; Kaneko, Makoto; Kurokawa, Yuzo; Tanaka, Haruo; Suzuki, Sohzoh; Kanda, Shuhei
- Abstract
Soil solution nitrogen (N) concentrations in a non-fertilized Japanese lawngrass ( Zoysia japonica Steud.; JL, native species) pasture were compared with those in a fertilized tall fescue ( Festuca arundinacea Schreb.; TF, improved species) pasture from May to December (late spring to early winter). Both pastures were grazed rotationally by breeding beef cattle in May-October. The TF pasture received a summer topdressing with compound fertilizer (8 g m-2 N, P2O5 and K2O). Annual herbage N consumption by cattle was lower in the JL (9.9 g N m-2) than in the TF (19.8 g N m-2). Soil solution N concentrations at the 10 and 30 cm depths were lower in the JL pasture (<0.61 mg L-1) than in the TF pasture (0.15-7.4 mg L-1) from mid-summer or early autumn to late autumn. In the JL pasture the soil solution N concentrations at the 10 cm depth remained low irrespective of the soil inorganic N concentrations in the 0-10 cm layer ( r = 0.33, P > 0.1), whereas the soil solution N in the TF pasture showed an increasing tendency with increasing soil inorganic N for the same soil depth and layer ( r = 0.87, P < 0.1). The non-significant response of soil solution N to soil inorganic N in the JL pasture suggests that the lower soil solution N concentrations in this native grass pasture may not be explained only by the lack of fertilizer application to the pasture.
- Subjects
JAPAN; NITROGEN in soils; NITROGEN &; the environment; TALL fescue; ZOYSIA japonica; PLANT species
- Publication
Grassland Science, 2011, Vol 57, Issue 4, p225
- ISSN
1744-6961
- Publication type
Article
- DOI
10.1111/j.1744-697X.2011.00231.x