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Controlled Release Fertilizers- Measuring Nutrient Release Rates

Handreck, K. Australian Horticulture, Oc. 1997, p 51-53. 1997.

THE RATE of release of potassium from most of the 11 controlled-release fertilisers tested was slightly lower than the rate of release of nitrogen. This difference should not cause any problems in practical situations. However, early release of phosphorus from all Nutricote and Osmocote products tested was considerably lower than was the rate of nitrogen release. Calculations show how this finding can be used when nursery managers choose fertilisers for different crops and situations.


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Author(s): K. Handreck

Section: Fertilization and Nutrition