נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Effect of application time of control agents on Podosphaera aphanis and side effect of fungicides on biocontrol agents survival on strawberry leaves [abstract]
Year:
2007
Source of publication :
IOBC/WPRS Bulletin
Authors :
אלעד, יגאל
;
.
Volume :
30 (6)
Co-Authors:

Fiamingo, F.; Pertot, I.

Facilitators :
From page:
76
To page:
76
(
Total pages:
1
)
Abstract:

Powdery mildew of strawberry (Podosphaera aphanis f.sp. fragariae) is one of the main concerns worldwide either in all strawberry growing systems. Integrated pest management allows adequate disease control while reducing the use of chemical fungicides. The optimal integration between chemical and biocontrol agents (BCAs) is based on the right timing of treatments according their mechanism of action and the disease stage and level and, since BCAs are living organisms, on avoiding negative side effect of chemicals on them. With the final aim of integrating chemicals and BCAs in a decision support system for optimization of IPM on strawberry the efficacy of some widely used fungicides (sulphur, polyoxin, kresoxim methyl and tetraconazole) and some Application of BCAs (Ampelomyces quisqualis AQ10, Bacillus subtilis QST 713, Trichoderma harzianum T39) against powdery mildew at different times in respect to pathogen infection was evaluated. Sulphur and B. subtilis QST 713 were active only if applied at inoculation time; polyoxin, kresoxim methyl and tetraconazole had the highest efficacy if applied after inoculation. T. harzianum T39 was active when applied 4 days before inoculation and it was not active when applied after inoculation suggesting a mechanism of action involving resistance induction in the host plant. A. quisqualis showed a poor efficacy probably due to the high disease pressure and, being a hyperperasite, to early application vs. pathogen establishment. Side effects of chemicals fungicides on BCAs were also evaluated. Quantitative survival of T. harzianum T39 and B. subtilis QST 713 on strawberry leaves was not affected by fungicides (sulphur, penconazole, azoxystrobin, polyoxin, kresoxim methyl and tetraconazole) treatment, while A. quisqualis viability decreases significantly.

Note:
Related Files :
Biocontrol agents
biological control
fungicides
leaves
plant protection
Podosphaera aphanis
strawberry
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
0
Affiliations:
Database:
גוגל סקולר
Publication Type:
מאמר מתוך כינוס
;
.
תקציר
;
.
Language:
אנגלית
Editors' remarks:
ID:
37516
Last updated date:
02/03/2022 17:27
Creation date:
10/10/2018 09:29
You may also be interested in
Scientific Publication
Effect of application time of control agents on Podosphaera aphanis and side effect of fungicides on biocontrol agents survival on strawberry leaves [abstract]
30 (6)

Fiamingo, F.; Pertot, I.

Powdery mildew of strawberry (Podosphaera aphanis f.sp. fragariae) is one of the main concerns worldwide either in all strawberry growing systems. Integrated pest management allows adequate disease control while reducing the use of chemical fungicides. The optimal integration between chemical and biocontrol agents (BCAs) is based on the right timing of treatments according their mechanism of action and the disease stage and level and, since BCAs are living organisms, on avoiding negative side effect of chemicals on them. With the final aim of integrating chemicals and BCAs in a decision support system for optimization of IPM on strawberry the efficacy of some widely used fungicides (sulphur, polyoxin, kresoxim methyl and tetraconazole) and some Application of BCAs (Ampelomyces quisqualis AQ10, Bacillus subtilis QST 713, Trichoderma harzianum T39) against powdery mildew at different times in respect to pathogen infection was evaluated. Sulphur and B. subtilis QST 713 were active only if applied at inoculation time; polyoxin, kresoxim methyl and tetraconazole had the highest efficacy if applied after inoculation. T. harzianum T39 was active when applied 4 days before inoculation and it was not active when applied after inoculation suggesting a mechanism of action involving resistance induction in the host plant. A. quisqualis showed a poor efficacy probably due to the high disease pressure and, being a hyperperasite, to early application vs. pathogen establishment. Side effects of chemicals fungicides on BCAs were also evaluated. Quantitative survival of T. harzianum T39 and B. subtilis QST 713 on strawberry leaves was not affected by fungicides (sulphur, penconazole, azoxystrobin, polyoxin, kresoxim methyl and tetraconazole) treatment, while A. quisqualis viability decreases significantly.

Scientific Publication
You may also be interested in