Agriculture Reference
In-Depth Information
Leonardos, O.H., Theodoro, S.H. and Assad, M.L. 2000. Remineralization for sustainable agri-
culture: a tropical perspective from a Brazilian viewpoint.
Nutrient Cycling in
Agroecosystems
56:
3-9.
Liebig, M.A. and Doran, J.W. 1999. Impact of organic production practices on soil quality indi-
cators.
Journal of Environmental Quality
28:
1601-1609.
Lim, H.H., Gilkes, R.J. and McCormick, P.G. 2003. Benefication of rock phosphate fertilisers
by mechano-milling.
Nutrient Cycling in Agroecosystems
67:
177-186.
Lockeretz, W., Shearer, G. and Kohl, D. 1981. Organic farming in the corn belt.
Science
211:
540-547.
Lytton-Hitchins, J.A., Koppi, A.J. and McBratney, AB. 1994. The soil condition of adjacent
bio-dynamic and conventionally managed dairy pastures in Victoria, Australia.
Soil, Use
and Management
10:
79-87
.
Mäder, P., Edenhofer, S., Boller, T., Wiemken, A. and Niggli, U. 2000. Arbuscular mycorrhizae
in a long-term field trial comparing low-input (organic, biological) and high-input (con-
ventional) farming systems in a crop rotation.
Biology and Fertility of Soils
31:
150-156.
Mäder, P., Fließbach, A., Dubois, D., Gunst, L., Fried, P. and Niggli, U. 2002. Soil fertility and
biodiversity in organic farming.
Science
296:
1694-1697.
Marschner, P. and Rengel, Z. 2003. Contributions of rhizosphere interactions to soil biological
fertility. In: Abbott, L.K. and Murphy, D.V. (eds)
Soil Biological Fertility - A Key to
Sustainable Land Use in Agriculture
. Kluwer Academic Publishers, the Netherlands. pp.
81-98.
Murata, T. and Goh, K.M. 1997. Effects of cropping systems on soil organic matter in a pair of
conventional and biodynamic mixed crop farms in Canterbury, New Zealand.
Biology and
Fertility of Soils
25:
372-381.
NASAA 2003.
The Standards for Organic Agricultural Production
. National Association for
Sustainable Agriculture Australia, Stirling.
Nguyen, M.L., Haynes, R.J. and Goh, K.M. 1995. Nutrient budgets and status in three pairs of
conventional and alternative mixed cropping farms in Canterbury, New Zealand.
Agriculture, Ecosystem and Environment
52:
149-162.
Niwas, J.M. and Dissanayake, C.B. 1987. Rocks as fertilizers: preliminary studies on potassium
availability of some common rocks of Sri Lanka.
Applied Geochemistry
2: 243-246.
Nortcliff, S. 2002. Standardisation of soil quality attributes.
Agriculture, Ecosystem and
Environment
88: 161-168.
Oberson, A., Fardeau, J.C., Besson, J.M. and Sticher, H. 1993. Soil phosphorus dynamics in
cropping systems managed according to conventional and biological agricultural meth-
ods.
Biology and Fertility of Soils
16:
111-117.
Öborn, I., Edwards, A.C., Witter, E., Oenema, O., Ivarsson, K., Withers, P.J.A., Nilsson, S.I.
and Richert Stinzing, A. 2003. Element balances as a tool for sustainable nutrient manage-
ment: a critical appraisal of their merits and limitations within an agronomic and envi-
ronmental context.
European Journal of Agronomy
20:
211-225.
Oehl, F., Oberson, A., Probst, M., Fließbach, A., Roth, H. and Frossard, E. 2001. Kinetics of
microbial phosphorus uptake in cultivated soils.
Biology and Fertility of Soils
34:
31-41.
Oehl, F., Oberson, A., Tagmann, H.U., Besson, J.M., Dubois, D., Roth, H. and Frossard, E.
2002. Phosphorus budget and phosphorus availability in soils under organic and conven-
tional farming.
Nutrient Cycling in Agroecosystems
62: 25-35
.
Oehl, F., Frossard, E., Fließbach, A., Dubois, D. and Oberson, A. 2004a. Basal organic phos-
phorus mineralization in soils under different farming systems.
Soil Biology and
Biochemistry
36:
667-675.
