Control of coffee rust (Hemileia vastatrix) with Bacillus subtilis.
Cell suspensions of the isolates AP-3 and AP-150 of Bacillus subtilis totally inhibited uredospores germination of the races I,II, XXV, XXIX of Hemileia vastatrix when Bacillus concentration was higher than 5 x 107 cells/ml. A higher than 70% inhibition was achieved with Bacillus concentration of 5x106 cells/ml, but the germinated uredospores showed high level of deformation. The spray of cell suspensions on coffee leaves, variety Caturra, autoclaved or not, of the isolates AP-3 and AP-150 in concentrations of 2,2x108 and 4,3x108 cells/ml, respectivelly, reduced the number of injuries in 87, 62, 73 and 72%, respectively. When those isolates were sprayed on toung plants the inhibition was 89, 67, 63 and 59%, respectively. In a field test in the 89/90 season,with 3-year-old coffee plants variety " Catuai vermelho", the direct application of the fermentative material of AP-3 and AP-150 diluted 1:10 showed a control of 26 and 25%, respectively, based on number of injury leaves, 24 and 29% on percentage of injuried leaves, and 27 and 32% based on number of injuries per injuried leaf. Copper oxichloride (3,360g/1000 plants) was considered the check treatment and showed a control of about 81%.
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Format: | Anais e Proceedings de eventos biblioteca |
Langue: | Ingles English |
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1993-08-16
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Sujets: | Coffee, Disease, Fungus, Rust, Antagonism, Bactéria, Hemileia Vastatrix, Bacillus subtilis, biological control, |
Accès en ligne: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/10804 |
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dig-alice-doc-108042023-02-15T18:09:36Z Control of coffee rust (Hemileia vastatrix) with Bacillus subtilis. BETTIOL, W. GHINI, R. GALVAO, J. A. H. WAGNER BETTIOL, CNPDA; RAQUEL GHINI, CNPDA; JOSE ABRAHAO HADDAD GALVAO, CNPDA. Coffee Disease Fungus Rust Antagonism Bactéria Hemileia Vastatrix Bacillus subtilis biological control Cell suspensions of the isolates AP-3 and AP-150 of Bacillus subtilis totally inhibited uredospores germination of the races I,II, XXV, XXIX of Hemileia vastatrix when Bacillus concentration was higher than 5 x 107 cells/ml. A higher than 70% inhibition was achieved with Bacillus concentration of 5x106 cells/ml, but the germinated uredospores showed high level of deformation. The spray of cell suspensions on coffee leaves, variety Caturra, autoclaved or not, of the isolates AP-3 and AP-150 in concentrations of 2,2x108 and 4,3x108 cells/ml, respectivelly, reduced the number of injuries in 87, 62, 73 and 72%, respectively. When those isolates were sprayed on toung plants the inhibition was 89, 67, 63 and 59%, respectively. In a field test in the 89/90 season,with 3-year-old coffee plants variety " Catuai vermelho", the direct application of the fermentative material of AP-3 and AP-150 diluted 1:10 showed a control of 26 and 25%, respectively, based on number of injury leaves, 24 and 29% on percentage of injuried leaves, and 27 and 32% based on number of injuries per injuried leaf. Copper oxichloride (3,360g/1000 plants) was considered the check treatment and showed a control of about 81%. 2023-02-15T18:09:36Z 2023-02-15T18:09:36Z 1993-08-16 1991 Anais e Proceedings de eventos In: INTERNATIONAL PLANT PROTECTION CONGRESS, 12., 1991, Rio de Janeiro. Oral and poster sessions - program and abstracts. Rio de Janeiro: [s.n.], 1991. http://www.alice.cnptia.embrapa.br/alice/handle/doc/10804 Ingles en openAccess n.p |
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topic |
Coffee Disease Fungus Rust Antagonism Bactéria Hemileia Vastatrix Bacillus subtilis biological control Coffee Disease Fungus Rust Antagonism Bactéria Hemileia Vastatrix Bacillus subtilis biological control |
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Coffee Disease Fungus Rust Antagonism Bactéria Hemileia Vastatrix Bacillus subtilis biological control Coffee Disease Fungus Rust Antagonism Bactéria Hemileia Vastatrix Bacillus subtilis biological control BETTIOL, W. GHINI, R. GALVAO, J. A. H. Control of coffee rust (Hemileia vastatrix) with Bacillus subtilis. |
description |
Cell suspensions of the isolates AP-3 and AP-150 of Bacillus subtilis totally inhibited uredospores germination of the races I,II, XXV, XXIX of Hemileia vastatrix when Bacillus concentration was higher than 5 x 107 cells/ml. A higher than 70% inhibition was achieved with Bacillus concentration of 5x106 cells/ml, but the germinated uredospores showed high level of deformation. The spray of cell suspensions on coffee leaves, variety Caturra, autoclaved or not, of the isolates AP-3 and AP-150 in concentrations of 2,2x108 and 4,3x108 cells/ml, respectivelly, reduced the number of injuries in 87, 62, 73 and 72%, respectively. When those isolates were sprayed on toung plants the inhibition was 89, 67, 63 and 59%, respectively. In a field test in the 89/90 season,with 3-year-old coffee plants variety " Catuai vermelho", the direct application of the fermentative material of AP-3 and AP-150 diluted 1:10 showed a control of 26 and 25%, respectively, based on number of injury leaves, 24 and 29% on percentage of injuried leaves, and 27 and 32% based on number of injuries per injuried leaf. Copper oxichloride (3,360g/1000 plants) was considered the check treatment and showed a control of about 81%. |
author2 |
WAGNER BETTIOL, CNPDA; RAQUEL GHINI, CNPDA; JOSE ABRAHAO HADDAD GALVAO, CNPDA. |
author_facet |
WAGNER BETTIOL, CNPDA; RAQUEL GHINI, CNPDA; JOSE ABRAHAO HADDAD GALVAO, CNPDA. BETTIOL, W. GHINI, R. GALVAO, J. A. H. |
format |
Anais e Proceedings de eventos |
topic_facet |
Coffee Disease Fungus Rust Antagonism Bactéria Hemileia Vastatrix Bacillus subtilis biological control |
author |
BETTIOL, W. GHINI, R. GALVAO, J. A. H. |
author_sort |
BETTIOL, W. |
title |
Control of coffee rust (Hemileia vastatrix) with Bacillus subtilis. |
title_short |
Control of coffee rust (Hemileia vastatrix) with Bacillus subtilis. |
title_full |
Control of coffee rust (Hemileia vastatrix) with Bacillus subtilis. |
title_fullStr |
Control of coffee rust (Hemileia vastatrix) with Bacillus subtilis. |
title_full_unstemmed |
Control of coffee rust (Hemileia vastatrix) with Bacillus subtilis. |
title_sort |
control of coffee rust (hemileia vastatrix) with bacillus subtilis. |
publishDate |
1993-08-16 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/10804 |
work_keys_str_mv |
AT bettiolw controlofcoffeerusthemileiavastatrixwithbacillussubtilis AT ghinir controlofcoffeerusthemileiavastatrixwithbacillussubtilis AT galvaojah controlofcoffeerusthemileiavastatrixwithbacillussubtilis |
_version_ |
1764983746685042688 |