Investigating adhesion amount of potassium as an indicator on strawberry phylloplanes

Abstract

We investigated the method for measuring the adhesion amount of medicine sprayed on crops.

Potassium solution as an indicator was sprayed on strawberries, and potassium attached to phylloplane was washed while shaking and collected in a vial. Next, the recovered potassium was measured with an atomic absorption spectrophotometer. When comparing distilled water, 0.025 mol/L hydrochloric acid, and 0.25-N hydrochloric acid, 0.025 mol/L hydrochloric acid was most suitable for potassium recovery. Moreover, since the potassium present in strawberry juice may interfere with the measurement, it is critical that we use leaves that are not scratched.