Bulletin of Entomological Research (1988) 78, 173-179
J.J. Lutwama and B.A. Matanmi (1988)
Efficacy of Bacillus thuringiensis subsp. kurstaki and Baculovirus heliothis foliar applications for suppression of Helicoverpa armigera (Hübner) (Noctuidae) and other lepidopterous larvae on tomato in south-western Nigeria
Bulletin of Entomological Research 78 (2), 173-179
Abstract: Tomato plants in Nigeria were subjected to foliar sprays of Bacillus thuringiensis subsp. kurstaki (formulated as Dipel and Thuricide) and Baculovirus heliothis (Elcar), to which carbaryl, plus the adjuvants Tenac and Gustol were on occasion added, to test their effectiveness against Helicoverpa armigera (Hübner) and other lepidopterous larvae. H. armigera larvae were found susceptible to both pathogens. The 0.5 kg/ha and the 1.0 kg/ha applications of Bacillus thuringiensis gave good field control of the larvae, similar to that of carbaryl at 1.5 kg/ha. Bacillus and virus were compatible but not significantly more effective when combined than when applied separately. Combinations of bacillus and virus with carbaryl were also not significantly more effective than the pathogens applied separately. B. thuringiensis at 0.5 kg/ha applied with carbaryl at 0.5 kg/ha was as good as carbaryl at 1.5 kg/ha. Gustol and Tenac did not significantly increase the effectiveness of the pathogens.
(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): Julius Julian Lutwama
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection
