Comparison of Bray I and Pi tests for evaluating plant-available phosphorus from soils treated with different partially acidulated phosphate rocks

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 modified single solution method for the determination of phosphate in natural waters

J.E. Murphy, J.P. Riley · Analytica Chimica Acta · 1962 · 21.1K citations

Natural Sciences, Oceanography, Elemental Analysis +7

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

R. H. Bray, L. T. Kurtz · Soil Science · 1945 · 7.7K citations

Agriculture, Agronomy, Soil Sciences +14

Analytical technique of the Pw method, used for the assessment of the phosphate status of arable soils in the Netherlands

H. A. Sissingh · Plant and Soil · 1971 · 192 citations

Agriculture, Earth Sciences, Soil Sciences +17

Determination of Plant‐available Phosphorus by the Iron Hydroxide‐impregnated Filter Paper (Pi) Soil Test

R. G. Menon, L. L. Hammond, H. A. Sissingh · Soil Science Society of America Journal · 1989 · 179 citations

Agriculture, Agronomy, Soil Sciences +17