Full TGIF Record # 22851
Item 1 of 1
Publication Type:
Author(s):Hatch, D. J.; Jarvis, S. C.; Reynolds, S. E.
Author Affiliation:AFRC Institute of Grassland and Environmental Research
Title:An assessment of the contribution of net mineralization to N cycling in grass swards using a field incubation method
Source:Plant and Soil. Vol. 138, No. 1, December 1991, p. 23-32.
Publishing Information:Dordrecht, Netherland: Martinus Nijhoff Publishers
Related Web URL:http://link.springer.com/article/10.1007/BF00011804
    Last checked: 10/14/2015
    Notes: Abstract only
Keywords:TIC Keywords: Assessment; Mineralization; Nitrogen cycle; Turfgrasses; Clovers
Abstract/Contents:Measurements of net mineralization using a field incubation method were made over a full growing season (180 d). Soil cores, taken from cut swards which for many years had been previously grazed by cattle, were placed in jars in the field for successive incubation periods of 14 d. Acetylene was added to the incubation jars to inhibit nitrification in the soil cores and thereby prevent losses of N through dentrification. Net mineralization over 180 d amounted to 415, 321 and 310 kg N ha-1 under grass/clover, unfertilized grass and grass receiving 420 kg N ha-1 y-1, respectively. At the start of the growing season, an index was <50% of the estimates obtained by field incubation. The amount of N in herbage harvested regularly from the swards also under-estimated the supply of N from the soil, with apparent recoveries of 53, 82 and 74% and total yields of N of 240, 263 and 538 (kg N ha-1) from grass/clover, unfertilized grass and fertilized grass, respectively. Mineralization rates varied significantly with seasonal soil temperature fluctuations, but the incubation method was apparently less sensitive in relation to changes in soil water content. Rates of N-turnover (as % of total soil N) were highest under grass/clover (9%), but similar under fertilized and unfertilized grass swards (approximately 5%).
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hatch, D. J., S. C. Jarvis, and S. E. Reynolds. 1991. An assessment of the contribution of net mineralization to N cycling in grass swards using a field incubation method. Plant Soil. 138(1):p. 23-32.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=22851
If there are problems with this record, send us feedback about record 22851.
Choices for finding the above item:
Find Item @ MSU
MSU catalog number: SB 13 .P55
Find from within TIC:
   Digitally in TIC by record number.
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)