Physical and nutrient status of soils under rubber (Hevea brasiliensis) of different ages in south-western Nigeria

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 soil under shifting cultivation.

P. H. Nye, D. J. Greenland · 1960 · 762 citations

Agriculture, Agronomy, Soil Sciences +10

The Soil under Shifting Cultivation

P. H. NYE, D. J. Greenland · Soil Science · 1961 · 474 citations

Agriculture, Earth Sciences, Soil Sciences +8

An Outline of Nigerian Vegetation.

P. W. Richards, R. W. J. Keay · Journal of Ecology · 1955 · 354 citations

Life Sciences, Botany, Ecology +11

ESTIMATION OF THE COLLOIDAL MATERIAL IN SOILS

George John Bouyoucos · Science · 1926 · 80 citations

Agriculture, Earth Sciences, Soil Sciences +12