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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 |
Publication Type:
| 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. |
Publishing Information: | Oxford, Blackwell Scientific Publications |
# of Pages: | 10 |
Keywords: | TIC Keywords: Nitrogen; Nutrient availability; Nitrogen uptake; Lolium perenne; Soil pH; Ammonia; Nitrates; Urea; Liming; Soil acidity; Soil moisture; Mineralization
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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 |
| MSU catalog number: SB 197 .B7 |
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