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In the spring 2000, on tulip plantations in south-eastern Poland, spots of died-off plants were observed. The inhibited growth, wilting of leaves and yellowish necrosis on roots and scales surface… Click to show full abstract
In the spring 2000, on tulip plantations in south-eastern Poland, spots of died-off plants were observed. The inhibited growth, wilting of leaves and yellowish necrosis on roots and scales surface occurred especially in low-lying areas. Mycological analysis indicated the presence of Trichoderma polysporum (Link ex Pers.) Rifai on the bulbs and roots of all tested plant samples. Pathogenicity test of 7 T. polysporum isolates was carried out on forced tulips cv. Merry Christmas in flower pots. After flowering, brownish necrosis (covering 5–30% of the surface) on the bulbs and roots were observed, as well as white-yellowish mycelium heaps of T. polysporum. Typical Trichoderma symptoms on aboveground plant parts like light-gray leaves tips were not observed.
Journal Title: Plant protection science
Year Published: 2017
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