First detection of Colletotrichum gloesporioides (penz.) Pens. and sacc. On Liriodendron chinense (hemsl.) Sarg. in Ukraine

Abstract

Purpose of the research was to identify the pathogenic agent, to study its trophic specialization in the context of introduction of plants of the genus Liriodendron L. For the first time in Ukraine, affection of leaves and branches with anthracnose Colletotrichum gloesporioides (Penz.) Pens. & Sacc. was detected on Liriodendron chinense. Affected leaves turn yellow and fall prematurely. It was established that the highest development of the disease (7.3%) was observed in 2014, which was determined by favourable weather conditions (hydrothermal coefficient (HTC) 2.0 in April and 1.7 in May). Period 2013, 2015 was characterized by a significantly lower manifestation of anthracnose and became 2.2%, 2.6%, respectively. With a strong development of the disease, infection is observed in the branches as well-the bark darkens in the places of affection, the cambium dies off, the branch dries out. For the protection of plants against anthracnose, agro technical measures are recommended, as well as the use of fungicides. It should be noted that since the first signs of the disease it takes about 10-15 days until the death of the leaves. With the strong development of the disease, the infection of branches is observed as well. The use of Champion and Chorus preparations to protect the Liriodendron chinense against anthracnose showed that their effectiveness is high, and the development of the disease have decreased to 0.3% and is not harmful.