Phytosanitary state of the apple clonal rootstocks parental gardens in the Right-Bank Lisosteppe of Ukraine depending on the stand density

UDC 634.1.03/632.03: 632.4:632.7

Phytosanitary state of the apple (Malus domestica Borkh.) clonal rootstocks parental gardens in the Right-Bank Lisosteppe of Ukraine depending on the stand density / Rusin O. O., Grytsa≥ O. V. // Sadivnytstvo (Horticulture). Ц 2016. Ц 71. Ц P. 71-74. Ц Refs.: 7. Ц in Ukrainian.

The authors present the results of studying the intensity of the apple clonal rootstocks parental gardens affection by the causative agents of scab and powdery mildew and Aphis pomi Deg. colonization under different stand density. The lowest diseases development intensity (0.5 points) was detected on 54-118 under a planting plan of 0.9x0.2 m and the highest damage of leaves and shoots by Aphis pomi Deg. in the variant with 0.7x0.2 m.
1 Fig.

Key words: apple, parental garden, rootstock, planting, plan, disease, pest.

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