An Agricultural Study of the Southern Maya Lowlands

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

A CRITICAL EXAMINATION OF A RAPID METHOD FOR DETERMINING ORGANIC CARBON IN SOILS—EFFECT OF VARIATIONS IN DIGESTION CONDITIONS AND OF INORGANIC SOIL CONSTITUENTS

Allan Walkley · Soil Science · 1947 · 2.5K citations

Agriculture, Earth Sciences, Soil Sciences +12

Soil Chemical Analysis

C. I. Rich · Soil Science Society of America Journal · 1958 · 2K citations

Agriculture, Chemistry, Soil Sciences +7

The Determination of the Readily Available Phosphorus of Soils¹

E. Truog · Agronomy Journal · 1930 · 508 citations

Agriculture, Earth Sciences, Soil Sciences +12

Environmental Limitation on the Development of Culture¹

Betty J. Meggers · American Anthropologist · 1954 · 366 citations

Life Sciences, Ecology, Environmental Sciences +3