Concepedia

A fresh look at shifting cultivation: Fallow length an uncertain indicator of productivity

Ole Mertz, Reed L. Wadley, Uffe N. Nielsen, Thilde Bech Bruun, Carol J. Pierce Colfer, Andreas de Neergaard, Martin Rudbeck Jepsen, Torben Martinussen, Qiang Zhao, Gabriel Tonga Noweg,

Agricultural Systems · 2007 · 89 citations · 37 references

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References

37

Methods of soil analysis. Part 2. Chemical and microbiological properties.

A. L. Page · 1982 · 13K citations

, , +10

Methods of soil analysis. Part 3 - chemical methods.

Donald L. Sparks, A. L. Page, Philip A. Helmke et al. · 1996 · 8.6K citations

, , +4

DETERMINATION OF TOTAL, ORGANIC, AND AVAILABLE FORMS OF PHOSPHORUS IN SOILS

R. H. Bray, L. T. Kurtz · Soil Science · 1945 · 7.5K citations

, , +12

Physical and chemical methods of soil and water analysis.

J. Dewis, Fernanda Freitas · 1970 · 550 citations

, , +7

Farming Systems in the Tropics

J. T. Coppock, Hans Ruthenberg · Geographical Journal · 1973 · 407 citations

, , +13