INFLUENCE OF AMMONIUM AND NITRATE NUTRITION ON THE CATION-ANION BLANCE AND NITROGEN AND CARBOHYDRATE METABOLISM OF WHITE MUSTARD PLANTS GROWN IN DILUTE NUTRIENT SOLUTIONS
A RAPID METHOD OF SOIL MOISTURE DETERMINATION
EFFECT OF SOIL TEMPERATURE ON THE AVAILABILITY OF PHOSPHROUS IN ANIMAL MANURES
EFFECT OF PURIFIED PLANT TANNIN ON DECOMPOSITION OF SOME ORGANIC COMPOUNDS AND PLANT MATERIALS
IRON CHLOROSIS IN SOYBEANS AS RELATED TO THE GENOTYPE OF ROOTSTOCK
ELECTRON MICROGRAPHS OF ACID-EDGE ATTACK OF KAOLINITE
COMPONENT POTENTIALS AND HYSTERESIS IN WATER RETENTION BY COMPACTED CLAY SOIL AGGREGATES
EFFECTS OF EXTERNAL SALT CONCENTRATIONS ON WATER RELATIONS IN PLANTS
ZINC AVAILABILITY IN CALCAREOUS SOILS
STUDIES ON EXCHANGE OF SODIUM FROM SOILS BY LEACHING WITH CALCIUM SULFATE
Observations on the Accuracy of an Ignition and an Extraction Method for Measuring Organic Phosphate in some Canadian Soils
Landform Studies from Australia and New Guinea
Mikroorganismen in der Wurzelregion Von Weizen