Concepedia

Phosphorus budget and phosphorus availability in soils under organic and conventional farming

Fritz Oehl, Astrid Oberson, Hans U. Tagmann, J. M. Besson, David Dubois, Paul Mäder, Hannes Roth, Emmanuel Frossard

Nutrient Cycling in Agroecosystems · 2002 · 144 citations · 19 references

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References

19

AN EXAMINATION OF THE DEGTJAREFF METHOD FOR DETERMINING SOIL ORGANIC MATTER, AND A PROPOSED MODIFICATION OF THE CHROMIC ACID TITRATION METHOD

Allan Walkley, I. ARMSTRONG BLACK · Soil Science · 1934 · 21.7K citations · Full text

, , +14

Managing Agricultural Phosphorus for Protection of Surface Waters: Issues and Options

Andrew N. Sharpley, Steven C. Chapra, Richard E. Wedepohl et al. · Journal of Environmental Quality · 1994 · 1.4K citations

, , +17

OBSERVATIONS ON THE DETERMINATION OF TOTAL ORGANIC PHOSPHORUS IN SOILS

William M. Saunders, E. G. Williams · Journal of Soil Science · 1955 · 705 citations

, , +10

Phosphorus Inputs to Terrestrial Ecosystems

E. I. Newman · Journal of Ecology · 1995 · 291 citations

, , +17

Does organic agriculture reduce soil erodibility? The results of a long-term field study on loess in Switzerland

S Siegrist, D. Schaub, Lukas Pfiffner et al. · Agriculture Ecosystems & Environment · 1998 · 175 citations

, , +15