Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 1
Written by Gabi Valentin CÎRSTEA, Elena Ştefania IVAN, Stelica CRISTEA
The aim of the research was to monitor the attack of some pathogens specific to alfalfa crops, in the period 2020-2022, in the Murighiol area, Tulcea county. An attack was detected by Pseudopeziza medicaginis ([Lib.] Sacc), responsible for the production of common leaf spot of lucerne or leaf spot of lucerne and Peronospora trifoliorum (de Bary) f. sp. medicaginis-sativae (Thuem.), a pseudofungus that produces downy mildew of alfalfa. The leaf spotting attack was higher during the observation period, reaching 10.3% in the control variant in 2021. The downy mildew attack was lower in 2022. The application of the treatments reduced the impact of the monitored pathogens, ensuring more than 60% effectiveness in the case of the attack of downy mildew and over 70% in the case of the attack of common leaf spot.
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