Evaluation of Black Currant Cultivars Resistance to Aphis grossulariae Kalt. and Effectiveness of Water Extracts of Artemisia Absinthium L. and Tanacetum Vulgare L. Against this Pest

This study consisted in revealing the possibility of using two ecologically safe methods to control gooseberry aphid (Aphis grossulariae Kalt.) in black currant cultivars: selection aphid resistant cultivars and the use of plant water extracts of wormwood (Artemisia absinthium L.) and tansy (Tanacetum vulgare L.) in the arid zone of Central Kazakhstan for protection against aphid. The study of the resistance of 15 black currant cultivars to gooseberry aphids in the field on the natural background of the population development (2015-2017) has shown that the cultivars differ significantly in their level of resistance. Mila, Sophia and Zhuravushka, which were not inhabited with aphids for three seasons, proved to be highly resistant to A. glossulariae, Garmoniia and Bariton-resistant, Kanakhama, Natasha and Altaiskaia pozdniaia-medium resistant, Rita, Agata and Gerkules-low-resistant and Zabava, Prestizh, Iadrenia and Pamiati Kukharskogo-non-resistant. The efficiency of the combined action of water extracts of A. absinthium and T. vulgare was high and 2 weeks after the treatment by botanical preparations it was from 87.2 to 100%.