Published in Scientific Papers. Series A. Agronomy, Vol. LXVII, Issue 1
Written by Zinaida DEHTIAROVA, Olena ZAIARNA, Yurii DEHTIAROV, Victor BUDYONNY
The article presents the results of research conducted in 2023 on the basis of the Dokuchaevske Experimental Field of the State Biotechnology University. The aim of the work was to study the complex of fungal pathogens of sunflower and to investigate the dynamics of the most harmful of them in the conditions of the Left-Bank Forest-Steppe of Ukraine. The instability of weather conditions in the Left Bank Forest-Steppe (heavy short-term showers alternating with drought) and violation of agricultural practices (non-compliance with crop rotation, sowing dates, unsuccessful predecessors, etc.) lead to sunflower diseases of different etiology. The time of occurrence and the degree of development of the disease is determined by the meteorological conditions of the year, the timing of sunflower sowing and the biological characteristics of the fungi themselves. The study of the development of fungal diseases of sunflower showed that the most harmful and widespread diseases during the study period were: rust (Puccinia helianthi Schw.), downy mildew (Plasmopara helianthi Novot. f. helianthi), phomopsis stem canker (Phomopsis helianthi Munt. Cvet. et al.).
[Read full article] [Citation]
