Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
Potency and effect of Bacillus thuringiensis preparations against larvae of Spodoptera littoralis and Boarmia (Ascotis) selenaria
Year:
1983
Source of publication :
Phytoparasitica
Authors :
Keren, Sara
;
.
Navon, Amos
;
.
Wysoki, Manes
;
.
Volume :
11
Co-Authors:
Navon, A.
Wysoki, M.
Keren, S., Div. of Entomology, ARO, The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
3
To page:
11
(
Total pages:
9
)
Abstract:
The potency of two new Bacillus thuringiensis (B.t.) preparations (coded ABG 6104 and ABG 6105) and of Dipel (B. thuringiensis var. kurstaki) was determined against Spodoptera littoralis (Boisd.) 5th-instar larvae on a calcium-alginate diet. With this bioassay, the new B.t. products were more than twice as potent as Dipel. They were also 2-3 times more active than Dipel on alfalfa and cotton leaves in the laboratory. When applied in an alfalfa field at the rate of 312 mg/m2, ABG 6104 and ABG 6105 caused 40% mortality of 5th-instar larvae and reduced the weight of the survivors to 30-40% of the control; only half of this activity was obtained with Dipel. On cotton, the activity of all the B. t. products was low. Neonate S. littoralis larvae were effectively controlled on avocado seedlings; however, there was high mortality also in the untreated controls. All three B. t. preparations had a similar effect on Boarmia (Ascotis) selenaria Schiff. on avocado leaves in the laboratory. Addition of a chitinase enzyme did not increase the pathogenicity of the microbial preparations in the latter tests. © 1983 Springer Science + Business Media B.V.
Note:
Related Files :
alfalfa
Avocado
Bacillus thuringiensis preparations, potency of
Boarmia (Ascotis) selenaria
COTTON
Spodoptera littoralis
Show More
Related Content
More details
DOI :
10.1007/BF02980706
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28605
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:40
You may also be interested in
Scientific Publication
Potency and effect of Bacillus thuringiensis preparations against larvae of Spodoptera littoralis and Boarmia (Ascotis) selenaria
11
Navon, A.
Wysoki, M.
Keren, S., Div. of Entomology, ARO, The Volcani Center, Bet Dagan, Israel
Potency and effect of Bacillus thuringiensis preparations against larvae of Spodoptera littoralis and Boarmia (Ascotis) selenaria
The potency of two new Bacillus thuringiensis (B.t.) preparations (coded ABG 6104 and ABG 6105) and of Dipel (B. thuringiensis var. kurstaki) was determined against Spodoptera littoralis (Boisd.) 5th-instar larvae on a calcium-alginate diet. With this bioassay, the new B.t. products were more than twice as potent as Dipel. They were also 2-3 times more active than Dipel on alfalfa and cotton leaves in the laboratory. When applied in an alfalfa field at the rate of 312 mg/m2, ABG 6104 and ABG 6105 caused 40% mortality of 5th-instar larvae and reduced the weight of the survivors to 30-40% of the control; only half of this activity was obtained with Dipel. On cotton, the activity of all the B. t. products was low. Neonate S. littoralis larvae were effectively controlled on avocado seedlings; however, there was high mortality also in the untreated controls. All three B. t. preparations had a similar effect on Boarmia (Ascotis) selenaria Schiff. on avocado leaves in the laboratory. Addition of a chitinase enzyme did not increase the pathogenicity of the microbial preparations in the latter tests. © 1983 Springer Science + Business Media B.V.
Scientific Publication
נגישות
menu      
You may also be interested in