Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

NITROGEN MINERALISATION IN SOILS OF VARYING TEXTURE, MOISTURE AND ORGANIC MATTER: II. A-VALUES IN SOILS CROPPED WITH RYEGRASS

M. HERLIHY and P. SHEEHAN
Plant and Soil
Vol. 53, No. 3 (NOVEMBER 1979), pp. 269-275
Published by: Springer
Stable URL: http://www.jstor.org/stable/42934964
Page Count: 7
  • More info
  • Cite this Item
NITROGEN MINERALISATION IN SOILS OF VARYING TEXTURE, MOISTURE AND ORGANIC MATTER: II. A-VALUES IN SOILS CROPPED WITH RYEGRASS
Preview not available

Abstract

There was a significant increase in a-values in the sequence, loamy sand, coarse sandy loam and loam, where ammonium was applied to pots of soil at the field capacity. Differences were also significant where nitrate was applied, but they did not vary consistently with texture. Possible reasons for this are discussed. Moisture had little effect, although a-values at the field capacity were occasionally high compared with soils in which moisture was restricted. There were significant differences between high and low labile organic matter counterparts of the loamy sand and loam. In the coarse sandy loam, immobilisation of an initial increment of the applied nitrogen resulted in a low a-value.

Page Thumbnails

  • Thumbnail: Page 
[269]
    [269]
  • Thumbnail: Page 
270
    270
  • Thumbnail: Page 
271
    271
  • Thumbnail: Page 
272
    272
  • Thumbnail: Page 
273
    273
  • Thumbnail: Page 
274
    274
  • Thumbnail: Page 
275
    275