Disease incidence of shot-hole disease of plum in two training systems

Csengőné Bianka Molnár
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Abstract

Of the foliar diseases of European plum, Wilsonomyces carpopilus is the most commonly occurring fungal pathogen. The aim of this two-year study was to investigate the susceptibility of ‘Čačanska lepotica’ plum variety to shot-hole disease (Wilsonomyces carpophilus) in two different training system with 4 x 1.5 m and 6 x 3 m tree spacings. The obtained results showed that the cultivar is susceptible to this disease and by the end of the vegetational period disease incident was above 50% in both years in both tree spacings. In 2018 disease incidence was higher in both spacing than in 2019, reaching almost 90% at the 4 x 1.5 m tree spacing plot. There were few significant differences between high and low density tree spacings. The results highlighted the importance of inoculum accumulation late in the season.
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两种培训体系中李子射孔病的发病率
在欧李叶面病害中,carpopilus是最常见的真菌病原体。在4 × 1.5 m和6 × 3 m两种不同的培养体系下,研究了‘Čačanska lepotica’李品种对树穴病(Wilsonomyces carpophilus)的敏感性。结果表明,该品种对该病易感,植被期结束时,两树种的发病率均在50%以上。2018年,两种株距的发病率均高于2019年,在4 × 1.5 m株行距的地块上,发病率几乎达到90%。高密度与低密度树间距间差异不显著。结果强调了接种量积累在季节后期的重要性。
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