THEORY AND SYSTEM OF AUTOMATIC DETERMINATION OF SOIL MOISTURE CHARACTERISTICS AND UNSATURATED HYDRAULIC CONDUCTIVITIES
TRANSITION METAL BONDING IN HUMIC ACID
OXIDATIVE RELEASE OF POTENTIALLY MINERALIZABLE SOIL NITROGEN BY ACID PERMANGANATE EXTRACTION
NUTRIENT CONCENTRATIONS IN THE NATURAL VEGETATION OF THE MOJAVE DESERT
PHOSPHORUS NUTRITION OF PLANTS INFLUENCED BY MANGANESE AND ALUMINUM UPTAKE FROM AN OXISOL
CROPPING AN ABANDONED FEEDLOT TO PREVENT DEEP PERCOLATION OF NITRATE-NITROGEN
EVALUATION OF AMMONIUM RELEASE BY ALKALINE PERMANGANATE EXTRACTION AS AN INDEX OF SOIL NITROGEN AVAILABILITY
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