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Evidence of resistance of certain soils to black root rot of tobacco caused by thielaviopsis basicola


, : Evidence of resistance of certain soils to black root rot of tobacco caused by thielaviopsis basicola. Botanica Helvetica 91: 75-80

Two soils from Switzerland were suppressive to the black root rot of tobacco, caused by T. basicola (Berk. et Br.) Ferraris. The propagules of T. basicola recovered from these suppressive soils were similar in number and in pathogenicity to the propagules recovered from a conducive soil. Suppressive soil was collected in a field cropped with tobacco for 21 consecutive years, and from a field with the usual crop rotation (wheat, corn).


Accession: 005411696

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Related references

Gasser, R.D.fago, G., 1981: Proof of the resistance of some types of soils to black root rot of tobacco caused by Thielaviopsis basicola. Berichte der Schweizerischen Botanischen Gesellschaft = Bulletin de la Societe botanique suisse1(91): 75-80

Meyer, Jr; Shew, Hd, 1991: Soils suppressive to black root rot of burley tobacco, caused by Thielaviopsis basicola. Soils suppressive to black root rot were detected in fields in which the pathogen was present but in which little or no disease had developed on susceptible cultivars of burley tobacco. Suppressive soils were characterized by low base saturation,...

Gasser, R.; Defago, G., 1981: Demonstration of the resistance of certain soils to black rot of tobacco roots caused by Thielaviopsis basicola. Propagules of T. basicola from 2 Swiss soils suppressive to black root rot resembled those from a conducive soil in number and pathogenicity. One suppressive soil was from a field under tobacco continuously for 21 yr, the other from a field under...

Gayed, S.K., 1969: The relation between Tobacco leaf and root necrosis induced by Thielaviopsis basicola and its bearing on the nature of Tobacco resistance to black root rot. When leaf disks of tobacco vars., injured in an abrasive manner described, were inoculated with endoconidia of T. basicola more necrotic lesions developed on the susceptible White Mammoth and Kelly than on Nicotiana debneyi, N. rustica and the tob...

Gayed S.K., 1969: The relation between tobacco leaf and root necrosis induced thielaviopsis basicola and its bearing on the nature of tobacco d resistance to black root rot. Phytopathology 59(11): 1596-1600

Gayed, S.K., 1969: Effect of benomyl on black root rot of Tobacco caused by Thielaviopsis basicola. Benomyl (50% WP) was fungistatic at 1-2 ppm and fungicidal at 5 ppm to T. basicola in culture. A benomyl (15 ppm suspension) root dip protected 4-week-old tobacco seedlings in a growth chamber but not older seedlings transplanted into heavily infe...

Gayed S.K., 1969: Effect of benomyl on black root rot of tobacco d caused by thielaviopsis basicola. Canadian Plant Disease Survey: 70-74

Papavizas, G.C.; Lewis, J.A.; Russel, H., 1972: Chemical control of black root rot of Bean and Tobacco caused by Thielaviopsis basicola. Of 41 volatile and non-volatile fungicides tested, only benomyl, TBZ, TBZ+ETMT, 2-methylsulphonyl-6-nitrobenzothiazole (MSNB), captan, maneb, DMTT, and SMDC were effective against the disease on bean (Phaseolus vulgaris) var. Topcrop and tobacco C...

Papavizas G.C.; Lewis J.A.; Russell H., 1972: Chemical control of black root rot of bean d and tobacco d caused by thielaviopsis basicola. Plant Disease Reporter 56(1): 15-19

Khan, S.A., 1964: Inheritance of resistance to root rot of tobacco caused by (Thielaviopsis basicola). From summer and winter greenhouse trials, the varieties Ky16, Va Gold, Vamoor 48, Gold Dollar and 402 were classified as resistant or tolerant according to the amount of visible root damage, Kyl6 being the most resistant in both trials. The classi...