Full TGIF Record # 59346
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Web URL(s):http://onlinelibrary.wiley.com/doi/10.1046/j.1365-2494.1999.00146.x/epdf
    Last checked: 10/02/2015
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Publication Type:
i
Refereed
Author(s):Logan, K. A. B.; Thomas, R. J.
Author Affiliation:Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen, UK
Title:Interactions between N supply and N uptake by perennial ryegrass, ¹⁵N recovery and soil pH for four acid Scottish soils
Source:Grass and Forage Science. Vol. 54, No. 1, March 1999, p. 42-51.
# of Pages:10
Publishing Information:Oxford, Blackwell Scientific Publications
Keywords:TIC Keywords: Nitrogen; Nutrient availability; Nitrogen uptake; Lolium perenne; Soil pH; Ammonia; Nitrates; Urea; Liming; Soil acidity; Soil moisture; Mineralization
Abstract/Contents:"The effects of NH₄⁺-N, NO₃⁻-N or urea-N addition on N uptake by perennial ryegrass (Lolium perenne), ¹⁵N recovery and pH of four limed and unlimed soils were determined in a pot experiment over 10 weeks. The best form of N in terms of herbage N uptake and fertilizer recovery differed between the soils. Recovery of applied ¹⁵N in herbage was greatest for the soil with the lowest pH and highest organic matter content, and overall recovery in the soil-plant system was influenced more by soil type than by N form. There was always an apparent mineralization of soil N when perennial ryegrass was present. Soil pH changes ranged from +0.11 to -0.58 units for the unlimed soils and from +0.03 to -1.06 units for the limed soils. The use of NO₃⁻-N rather than NH₄⁺-N or urea-N avoided further acidification. Lime increased herbage N only from the soils with the lowest pH values. Although the acidifying effect of NH₄⁺-fertilizer was alleviated, liming may increase nitrification and possibly N loss via denitrification and/or leaching in the field. The major influence of soil type on herbage N uptake, pH response to the treatments and fertilizer recoveries implies that liming and fertilizer N management decisions should consider soil characteristics, such as organic matter, clay contents and pH."
Language:English
References:27
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Logan, K. A. B., and R. J. Thomas. 1999. Interactions between N supply and N uptake by perennial ryegrass, ¹⁵N recovery and soil pH for four acid Scottish soils. Grass Forage Sci. 54(1):p. 42-51.
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Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1046/j.1365-2494.1999.00146.x/epdf
    Last checked: 10/02/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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