The effect of treating plum tree with Rovral (iprodion) and Euparen (dichlofluanid) on the content of soluble solids in fruit

Halina Borecka, Hanna Bryk, Lech Michalczuk

Abstract


The concentration of soluble solids in plum fruit varied and depended on the cultivar, year, and fungicide treatment. Plums from trees treated with Rovral (iprodion) contained in some case the lowest level of soluble solids, higher or equal levels were found in those sprayed with Euparen (dichlofluanid), and the highest concentration of soluble solids was in fruits from untreated trees. Explanation of this phenomenon is possible by looking for changes in photosynthesis of treated and untreated leaves. Fungicide treatment of some plum cultivars, particularly with Rovral, decreased the photosynthesis of the leaves.

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