Bacillus subtilis for the control of powdery mildew on cucumber and zucchini squash.

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dc.contributorWAGNER BETTIOL, CNPMA; ANGELO GARIBALDI, UNIVERSITA DEGLI STUDI DI TORINO; QUIRICO MIGHELI, UNIVERSITA DEGLI STUDI DI TORINO.
dc.creatorBETTIOL, W.
dc.creatorGARIBALDI, A.
dc.creatorMIGHELI, Q.
dc.date2017-01-16T23:00:51Z
dc.date2017-01-16T23:00:51Z
dc.date1998-05-13
dc.date1997
dc.date2017-01-16T23:00:51Z
dc.date.accessioned2026-07-07T05:03:08Z
dc.descriptionApplication of concentrated metabolites of Bacillus subtilis - CMBS - (5,000 ug/mL) one and 24 h before or after inoculation of Sphaerotheca fuliginea (3 x 10 4 conidia/mL) reduced the number of lesions on cucumber leaves by 90-99%. The average number of lesions on control plants was 16.7 per leaf. A wettable powder product formulated with cells (10%) and metabolites (10%) of B. subtilis (WPBS), and CMBS sprayed on cucumber plants (1,000 ug/mL and 10,000 ug/mL) twice a week totally controlled powdery mildew. In the control treatment, 18 days after the first spray, the percent leaf surface covered by lesions was 99.0 and 46.7%, on the cotyledonary and expanded leaves, respectively. In the control treatment, 30 days after the first spray, the percent leaf surface with lesions was 26.1%, while leaves sprayed with CMBS presented no lesions. The fresh weight per plant was 4.3 g in the control treatment; 12.2 g, and 10.2 for plants sprayed with CMBS at the concentration of 1,000 and 10,000 ug/mL, respectively; and 9.7 g and 10.1 g for plants sprayed with WPBS 1,000 and 10,000 ug/mL, respectively. For zucchini squash, CMBS (5,000 ug/mL) sprayed every 2,4, and 6 days showed reductions in lesioned leaf surface of 100.0,98.3, and 94,7%, respectively.
dc.identifierBragantia, Campinas, v.56, n.2, p.281-287, 1997.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/12884
dc.identifier.urihttp://hdl.handle.net/123456789/478641
dc.languageeng
dc.rightsopenAccess
dc.subjectResistance
dc.subjectTilletiopsis spp
dc.subjectCladosporium sp
dc.subjectVerticillium lecanii
dc.subjectAcremonium alternatum
dc.subjectMétodos de controle
dc.subjectFungicidas
dc.subjectInimigos naturais
dc.subjectControle Biológico
dc.subjectResistência
dc.subjectAmpelomyces quisqualis
dc.subjectfungicides
dc.subjectbiological control
dc.subjectcontrol methods
dc.subjectnatural enemies
dc.titleBacillus subtilis for the control of powdery mildew on cucumber and zucchini squash.
dc.typeArtigo de periódico

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