Anderson, R. & Christie, P. 1992. Silage quality and the long term
application of animal slurries to grassland. Third British
Grassland Society Research Conference, pp. 117-118.
Anderson, R. & Christie, P. 1995. Effect of long-term application of
animal slurries to grassland on silage quality assessed in
laboratory silos. Journal of the Science of Food and
... Agriculture 67,
205-213.
Christie, P. & Beattie, J.A.M. 1987. Significance of sample size in
measurement of soil microbial biomass by the chloroform
fumigation-incubation method. Soil Biology and Biochemistry 19, 149-152.
Christie, P. & Beattie, J.A.M. 1989. Grassland soil microbial biomass
and accumulation of potentially toxic metals from
long-term slurry application. Journal of Applied Ecology 26, 597-612.
Christie, P. & Beattie, J.A.M. 1991. Direct field evaluation of
fertilizer efficiency of slurry NH4-N for cut grass using 15N.
In: Stable Isotopes in Plant Nutrition, Soil Fertility and Environmental
Studies. IAEA, Vienna, pp. 403-405.
Christie, P. & Kilpatrick, D.J. 1992. Vesicular-arbuscular mycorrhiza
infection in cut grassland following long-term slurry
application. Soil Biology and Biochemistry 24, 325-330.
Christie, P. 1987. Long-term effects of slurry on grassland. In: H.G.
van der Meer, R.J. Unwin, T.A. van Dijk & G.C. Ennik
(eds): Animal Manure on Grassland and Fodder Crops. Fertilizer or Waste?
Martinus Nijhoff, The Hague, pp. 301-304.
Christie, P. 1987. Long-term effects of slurry on grassland. Newsletter
Farming Life, 7 February, p.28
Christie, P. 1987. Some long-term effects of slurry on grassland.
Journal of Agricultural Science, Cambridge 108, 529-541.
Christie, P. 1990. Accumulation of potentially toxic metals in grassland
from long-term slurry application. In: R. Merckx, H.
Vereecken & K. Vlassak (eds): Fertilization and the Environment. Leuven
University Press, pp. 124-130.
Christie, P. 1992. Protecting our soils from heavy metal pollution.
Newsletter Farming Life, 30 May, p. 24
Christie, P. 1993. Agronomic and ecological effects of dilute organic
manures on temperate grassland. Proceedings of the
International Workshop on Classification and Management of Arid-Desert
Soils. China Science and Technology Press,
Beijing, pp. 57-62.
Christie, P., Dickson, E.L. & Kilpatrick, D.J. 1989. Comparison between
wet and dry oxidation methods of sample
preparation for copper and zinc analysis of grassland herbage. Journal
of the Science of Food and Agriculture 48, 155-164. 
