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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Field Efficacy of Entomopathogenic Nematodes against the Beetle Maladera matrida (Coleoptera: Scarabaeidae)
Year:
1993
Source of publication :
Biocontrol Science and Technology
Authors :
גלזר, איתמר
;
.
Volume :
3
Co-Authors:
Glazer, I., Department of Nematology, ARO, the Volcani Center, Bet Dagan, Israel, Department of Entomology, ARO, Gilat Experimental Station, Negev, Israel
Facilitators :
From page:
367
To page:
376
(
Total pages:
10
)
Abstract:
Single, double and triple releases of the entomopathogenic nematode Heterorhabditis bacterio-phora Poinar, reduced the population of the beetle Maladera matrida Argaman, infesting peanuts (“Shulamit’ cv.) by 70, 75 and 93% respectively in microplot tests. Simultaneous and late (2 weeks after infestation) applications reduced beetle numbers by 63 and 79% respectively, in the microplots, while early application (2 weeks prior to infestation) did not reduce the beetle population. In a field trial, reductions in insect population and damage to the crop were achieved by early treatment with the nematode as well as by Heptachlor, leading to reductions in the insect population of 60 and 90% respectively, when recorded 4 weeks after nematode application. However, the nematode treatment did not maintain its effectiveness for a longer period and pest damage increased to the same level as the untreated control after 7 weeks. When the nematodes were applied at different concentrations (0.25-1.0 x HP infective juveniles (IJs) m-2) their effectiveness was not related to the concentration level. The only significant (P < 0.05) reduction in insect levels was recorded in the treatment with 0.5 x 106IJs m-2. In a second field trial, both H. bacteriophora and Steinemema glaseri reduced insect populations significantly (P < 0.05) by approximately 50% in comparison to the control. In the third trial, treatment with H. bacteriophora resulted in a decrease in insect population of 90% while treatment with S. carpocapsae reduced the grub numbers by 40% in comparison to the control. A differential susceptibility of various grub developmental stages was recorded in the field. The small grubs (1–4 mm long, 1st-2nd larval stage) were not affected by the nematode treatments while the numbers of medium and large size grubs were reduced by 2- and 3-fold respectively in the various tests. Nematodes were recovered by ‘nematode traps’ containing Galleria mellonella larvae from treated field plots 78 days after application. The implications of the results from the present studies on the use of entomopathogenic nematodes are discussed in relation to the development of an integrated pest management programme. © 1993, Taylor & Francis Group, LLC. All rights reserved.
Note:
Related Files :
biological control
Heterorhabditis bacteriophora
Maladera matrida
nematode
Scarabaeidae
Steinemema carpocapsae
עוד תגיות
תוכן קשור
More details
DOI :
10.1080/09583159309355291
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:

Itamar's own PDF.

ID:
22863
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:54
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Scientific Publication
Field Efficacy of Entomopathogenic Nematodes against the Beetle Maladera matrida (Coleoptera: Scarabaeidae)
3
Glazer, I., Department of Nematology, ARO, the Volcani Center, Bet Dagan, Israel, Department of Entomology, ARO, Gilat Experimental Station, Negev, Israel
Field Efficacy of Entomopathogenic Nematodes against the Beetle Maladera matrida (Coleoptera: Scarabaeidae)
Single, double and triple releases of the entomopathogenic nematode Heterorhabditis bacterio-phora Poinar, reduced the population of the beetle Maladera matrida Argaman, infesting peanuts (“Shulamit’ cv.) by 70, 75 and 93% respectively in microplot tests. Simultaneous and late (2 weeks after infestation) applications reduced beetle numbers by 63 and 79% respectively, in the microplots, while early application (2 weeks prior to infestation) did not reduce the beetle population. In a field trial, reductions in insect population and damage to the crop were achieved by early treatment with the nematode as well as by Heptachlor, leading to reductions in the insect population of 60 and 90% respectively, when recorded 4 weeks after nematode application. However, the nematode treatment did not maintain its effectiveness for a longer period and pest damage increased to the same level as the untreated control after 7 weeks. When the nematodes were applied at different concentrations (0.25-1.0 x HP infective juveniles (IJs) m-2) their effectiveness was not related to the concentration level. The only significant (P < 0.05) reduction in insect levels was recorded in the treatment with 0.5 x 106IJs m-2. In a second field trial, both H. bacteriophora and Steinemema glaseri reduced insect populations significantly (P < 0.05) by approximately 50% in comparison to the control. In the third trial, treatment with H. bacteriophora resulted in a decrease in insect population of 90% while treatment with S. carpocapsae reduced the grub numbers by 40% in comparison to the control. A differential susceptibility of various grub developmental stages was recorded in the field. The small grubs (1–4 mm long, 1st-2nd larval stage) were not affected by the nematode treatments while the numbers of medium and large size grubs were reduced by 2- and 3-fold respectively in the various tests. Nematodes were recovered by ‘nematode traps’ containing Galleria mellonella larvae from treated field plots 78 days after application. The implications of the results from the present studies on the use of entomopathogenic nematodes are discussed in relation to the development of an integrated pest management programme. © 1993, Taylor & Francis Group, LLC. All rights reserved.
Scientific Publication
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