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VCRB :: Contents of Volume 49/1998 :: Detailed information


FUNGI INFECTING SOYBEAN ROOTS (GLYCINE MAX (L.) MERRILL) CULTIVATED IN THE REGION OF LUBLIN.

Alina PASTUCHA
Agricultural University of Lublin, Akademicka 13, 20-934 Lublin, Poland


Summary

The studies were performed on 30 commercial plantations situated in the Lublin region - Poland, between 1994 and 1996. The subject of the studies were 6-week-old soybean seedlings and the plants of such varieties as Aldana, Nawiko, Polan and Progres, which were taken in the phase of anthesis. In each year of studies in particular phases, the following were established: degree of plant infection and infection index. Besides, a mycological analysis was performed of the infected roots and the base of the seedling stems as well as of the plants in the phase of anthesis. A laboratory mycological analysis was also carried out on the seeds from the samples intended for the sowing of the plantation, as well as from the harvest of the examined areas. During the observations varied numbers of plants (ranging from 25 to 53) per 1m2 and differentiated healthiness were monitored, regardless of the year of studies or the plants, developmental phase. It was found out, that the roots and stem base of soybean cultivated in the Lublin region, are threatened by the fungi of Fusarium oxysporum f. sp. glycines, Fusarium solani, Fusarium culmorum, Botrytis cinerea, Pythium debaryanum. The roots and stem base of soybean seedlings were most infected by Rhizoctonia solani and Fusarium solani, while the plants in the phase of anthesis were endangered by Fusarium oxysporum f. sp. glycines.

keywords:pathogenic fungi, root, soybean

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