Three-year study of fast-growing trees in degraded soils amended with composts: Effects on soil fertility and productivity

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

Agriculture, Earth Sciences, Soil Sciences +14

The Nature and Properties of Soils

Agronomy Journal · 1952 · 6.2K citations

Agriculture, Earth Sciences, Soil Sciences +10

Use of p-nitrophenyl phosphate for assay of soil phosphatase activity

M. A. Tabatabai, J. M. Bremner · Soil Biology and Biochemistry · 1969 · 4.4K citations

Agriculture, Biochemistry, Soil Sciences +10

Humus Chemistry—Genesis, Composition, Reactions

J. W. Parsons · Soil Science · 1983 · 4.1K citations

Agriculture, Chemistry, Soil Sciences +9

Short-term assay of soil urease activity using colorimetric determination of ammonium

Ellen Kandeler, H. R. Gerber · Biology and Fertility of Soils · 1988 · 2.1K citations

Agriculture, Agronomy, Soil Sciences +13