OVERSATURATION METHOD FOR PREPARING SATURATION EXTRACTS FOR SALINITY APPRAISAL
BORON ADSORPTION BY VOLCANIC ASH SOILS IN SOUTHERN CHILE
AVAILABILITY OF BORON AND PHOSPHORUS AS AFFECTED BY LIMING AN ACID POTATO SOIL
EXTRACTABLE POTASSIUM IN GRUNDITE ILLITE
OXIDATION OF NONHYDROLYZABLE HUMIC RESIDUE, AND ITS RELATION TO LIGNIN
SOIL SALINITY REDUCED BY SUMMER FALLOW AND CROP RESIDUES
THE AUXIN-LIKE EFFECTS OF HUMIC PREPARATIONS FROM LEONARDITE
BIOGENIC SILICA IN SELECTED SPECIES OF DECIDUOUS ANGIOSPERMS
The Penetrometer and Soil Exploration
The Overproduction Trap in U.S. Agriculture
Soil Map of the World. 1