Data/hora: 04/06/2024 03:41:42

Biblioteca(s): | Embrapa Hortaliças; Embrapa Meio Ambiente.
Data corrente: | 13/05/1998
Data da última atualização: | 16/01/2017
Autoria: | BETTIOL, W.; GARIBALDI, A.; MIGHELI, Q.
Afiliação: | WAGNER BETTIOL, CNPMA; ANGELO GARIBALDI, UNIVERSITA DEGLI STUDI DI TORINO; QUIRICO MIGHELI, UNIVERSITA DEGLI STUDI DI TORINO.
Título: | Bacillus subtilis for the control of powdery mildew on cucumber and zucchini squash.
Ano de publicação: | 1997
Fonte/Imprenta: | Bragantia, Campinas, v.56, n.2, p.281-287, 1997.

Idioma:

Inglês
Português

Conteúdo: | Application 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.
Palavras-Chave: | Acremonium alternatum; Cladosporium sp; Cucumber; Fungicidas; Inimigos naturais; Métodos de controle; Resistance; Tilletiopsis spp; Verticillium lecanii; Zucchini squash.
Thesagro: | Abóbora; Controle Biológico; Cucumis Sativus; Cucúrbita Pepo; Oídio; Pepino; Resistência.
Thesaurus Nal: | Ampelomyces quisqualis; biological control; control methods; fungicides; natural enemies; powdery mildew; Sphaerotheca fuliginea.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/153348/1/1997AP038-Bettiol-Bacillus-3454.PDF
Registro original: | Embrapa Meio Ambiente (CNPMA)

Exemplares:

CNPMA - (3454-1) - UPC - AP - DD -  -  - 0 - DIS
CNPH - (12175-1) - ADP - AP - -- -  -  - 630.5 - DIS