Extraktion von Phosphor aus Böden mit dem Ammoniumsalz der Äthylendiamintetraessigsäure unter verschiedenen Bedingungen

Abstract

Band 1 I X srd with succeeding treatments. For the evaluation of the soil as a supplier of plant nutrients not only the amount of nutrient extracted in the first treatment, but also the amount extracted in successive treatments is required. These quantities can be calculated approximately from the amounts extracted in the first two extractions. These are given by rhe r,elation X = a2/(a-b), where a and b are in the first and second extractions respectively. Extraktion von Phosphor aus Bodenthe amounts of nutrient extracted [3218]