Influence of the biostimulator atonic plus on the functional state of the apple leaf apparatus
Influence of the biostimulator atonic plus on the functional state of the apple (Malus domestica Borkh.) leaf apparatus / Vintskovs’ka Y.Y., Grusha V.V., Kytayev O.I. // Sadivnytstvo (Horticulture). – 2016. – 71. – P. 152-159. – Refs.: 13. – in Ukrainian.
The authors present the results of the apple trees leaf apparatus functioning. The determination of their functional state was carried out using the instrument "Floratest" by detecting the leaf chlorophyll fluorescence induction changes. The positive effect of the preparation Atonik Plus was proved according to the parameters that characterize the potential photosynthetic effectiveness and productivity of the trees. The rather high adaptability of their leaf apparatus to the changes in lighting conditions was established by the terms of the chlorophyll fluorescence induction Fp1 and Fp2 in the leaves. The viral infection of the cultivar Shafran Krasnokuts’ky was not revealed under the coefficient plateau KpL.
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Key words: apple, biologic preparation Atonik Plus, fluorescence of chlorophyll, photosynthetic activity, adaptability, leaf apparatus.