Full TGIF Record # 37389
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Web URL(s):http://www.tandfonline.com/doi/abs/10.1080/00103629509369366
    Last checked: 10/13/2015
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Publication Type:
i
Report
Author(s):Bailey, J. S.
Author Affiliation:Department of agriculture for Northern Ireland, Agricultural and Environmental Science Division, Newforge Lane, Belfast, Northern Ireland BT9 5PX
Title:Liming and nitrogen efficiency: some effects of increased calcium supply and increased soil pH on nitrogen recovery by perennial ryegrass
Source:Communications in Soil Science and Plant Analysis. Vol. 26, No. 7/8, April 1995, p. 1233-1246.
# of Pages:14
Publishing Information:New York, NY: Marcel Dekker
Keywords:TIC Keywords: Liming; Nitrogen efficiency; Calcium; Soil pH; Nitrogen recovery; Lolium perenne; Nitrogen uptake; Gypsum; Ammonium nitrate; Yield response; Mineralization; Biomass; Rhizosphere
Abstract/Contents:"Positive effects of liming on the nitrogen (N) contents of perennial ryegrass (Lolium perenne) shoots might be due in part to the effects of increased exogenous calcium (Ca) level on the rate of N uptake by plants. To test this hypothesis, perennial ryegrass was grown in soil culture treated with different rates of lime, gypsum, and ammonium nitrate (NH4NO3), in a factorial combination. The effects of these treatments on yield, N offtake, and shoot chemical composition were examined at two consecutive harvests. At both harvests, liming significantly increased plant yield and N offtake. There was no response to gypsum at cut 1; but at the second harvest, a negative interaction occurred between the two Ca treatments such that gypsum increased plant yield and N offtake in the absence of lime but not in its presence. The results suggest that liming affects N recovery by swards in at least two different ways, each associated with a different phase in the soil MIT (Mineralizaiton Immobilization Turnover) cycle. During phases of net N mineralizaiton, liming by raising soil pH stimulates biomass activity and increases the amount of organic N mineralized. In contrast, during phases of net N immobilization, liming by increasing Ca availability in the rhizosphere improves the ability of plants to absorb N, and thus helps them to compete more effectively with the biomass for mineral N."
Language:English
References:21
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bailey, J. S. 1995. Liming and nitrogen efficiency: some effects of increased calcium supply and increased soil pH on nitrogen recovery by perennial ryegrass. Commun. Soil. Sci. Plant Anal. 26(7/8):p. 1233-1246.
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http://www.tandfonline.com/doi/abs/10.1080/00103629509369366
    Last checked: 10/13/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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