Journal of Applied Entomology - Zeitschrift für angewandte Entomologie (1996) 120, 249-254

H.S. Salama, R. Aboul-Ela and A. Abdel-Razek (1996)
Persistence of Bacillus thuringiensis delta-endotoxin and ß-exotoxin on stored grains and their potency against Plodia interpunctella and Sitotroga cerealella
Journal of Applied Entomology - Zeitschrift für angewandte Entomologie 120 (4), 249-254
Abstract: The persistence of B. thuringiensis, delta-endotoxin and ß-exotoxin was determined. The decrease in activity was slow over a period of 150 days. The reduction in larval mortality of Indian meal moth, Plodia interpunctella was more obvious with the increase of storage period and also with the decrease of the concentration of delta-endotoxin. The decay in activity, in the case of ß-exotoxin, was more obvious at lower concentrations than at higher concentrations as the time of storage increased. Data showed that the potency of the delta-endotoxin decreased 15 days after application at 27 and 35°C against both tested species, but with a lower degree in the case of Indian meal moth. On the other hand, the ß-exotoxin showed a rapid decay 15 days after application on both stored wheat and crushed corn against both tested insect species.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): H.S. Salama

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
non-target effects/fate in environm.
environment/habitat manipulation

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Plodia interpunctella	Stored grain
	Sitotroga cerealella	Stored grain