Geoscience Reference
In-Depth Information
and Integrated Control of Noxious Animals and Plants/West
Palaearctic Regional Section Bulletin
26:
111-116.
Phetteplace, H. W.; Johnson, D. E. and Seidl, A. F.
2001. Greenhouse gas emissions from simulated beef and dairy
livestock systems in the United States.
Nutrient Cycling in
Agroecosystems
60:
9-102.
Phillips, D. A.; Newell, K. D.; Hassall, S. A. and
Filling, C. E. 1976. The effect of CO
2
enrichment on root
nodule development and symbiotic N
2
reduction in
Pisum sati-
vum
L.
American Journal of Botany
63:
356-362.
Pimentel, D.; Harvey, C.; Resosudarmo, P.; Sinclair,
K.; Kurz, D.; McNair, M.; Crist, S. et al., 1995.
Environmental and economic costs of soil erosion and conserva-
tion benefits.
Science
267:
1117-1123.
Pimentel, D.; Hepperly, P.; Hanson, J.; Douds, D. and
Seidel, R. 2005. Environmental, energetic, and economic
comparisons of organic and conventional farming systems.
Bioscience
55:
573-582.
Pinares-Patiño, C. S.; Ulyatt, M. J.; Waghorn, G. C.;
Holmes, C. W.; Barry, T. N.; Lassey, K. R. and
Johnson, D. E. 2003. Methane emission by alpaca and sheep
fed on lucerne hay or grazed on pastures of perennial ryegrass/
white clover or birdsfoot trefoil.
Journal of Agricultural Science
140:
215-226.
Pitovranov, S. E.; Lakimets, V.; Kiselev, V. I. and
Sirotenko, O. D. 1988. The effects of climatic varia-
tions on agriculture in the subarctic zone of the USSR. In:
The Assessment in Cold Temperature and Cold Regions
, eds.
Parry, M. L.; Carter, T. R. and Konijn, N. T. Dordrecht, the
Netherlands. pp. 617-724.
Proctor, P. and Cole, G. 2002.
Grasp the Nettle: Making
Biodynamic Farming and Gardening Work
. Random House
Publishing, New Zealand.
Rathore, L. S.; Singh, K. K.; Saseendran, S. A. and
Baxla, A. K. 2001. Modelling the impact of climate change
on rice production in India.
Mausam
52:
1.
Reay, D. S.; Smith, K. A. and Edwards, A. C. 2003.
Nitrous oxide emission from agricultural drainage waters.
Global Change Biology
9:
195-203.
Reeder, J. D.; Schuman, G. E.; Morgan, J. A. and
Lecain, D. R. 2004. Response of organic and inorganic car-
bon and nitrogen to long-term grazing of the short grass steppe.
Environmental Management
33:
485-495.
Reganold, J. P.; Elliot, L. F. and Unger, Y. L. 1987.
Long-term effects of organic and conventional farming on soil
erosion.
Nature
330:
370-372.
Reilly, J.; Hohmann, N. and Kane, S. 1994. Climate change
and agricultural trade: Who benefits and who loses?
Global
Environmental Change
4:
24-36.
Rice, C. W. and Owensby, C. E. 2001. Effects of fire and
grazing on soil carbon in rangelands. In:
The Potential of
