02429naa a2200433 a 450000100080000000500110000800800410001910000160006024500890007626000090016552012650017465000270143965000230146665000200148965000150150965000200152465000190154465000270156365000130159065000240160365000200162765000200164765000110166765000110167865000170168965300260170665300200173265300130175265300150176565300220178065300250180265300150182765300210184265300250186365300200188870000180190870000160192677300530194210128842017-01-16       1997    bl uuuu     u00u1 u    #d1 aBETTIOL, W.  aBacillus subtilis for the control of powdery mildew on cucumber and zucchini squash.  c1997  aApplication 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.  aAmpelomyces quisqualis  abiological control  acontrol methods  afungicides  anatural enemies  apowdery mildew  aSphaerotheca fuliginea  aAbóbora  aControle Biológico  aCucumis Sativus  aCucúrbita Pepo  aOídio  aPepino  aResistência  aAcremonium alternatum  aCladosporium sp  aCucumber  aFungicidas  aInimigos naturais  aMétodos de controle  aResistance  aTilletiopsis spp  aVerticillium lecanii  aZucchini squash1 aGARIBALDI, A.1 aMIGHELI, Q.  tBragantia, Campinasgv.56, n.2, p.281-287, 1997.