Compatibility and synergism between <i>Bacillus thuringiensis</i> var. <i>kurstaki</i> and two chemical insecticides

Habib, Μ. Ε. M.; Garcia, Maria Alice Amorim

doi:10.1111/j.1439-0418.1981.tb04446.x

Cited by 3 publications

(2 citation statements)

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“…galleriae against the cotton leafworm, Spodoptera littoralis (Boisduval) (Salma et al 1984), and B. thuringiensis subsp. kurstaki against the fall armyworm, S. frugiperda (J. E. Smith) (Habib and Garcia 1981). Pesticide mixtures containing the botanical insecticide, pyrethrum appear to increase the efficacy of B. thuringiensis subsp.…”

Section: Benefits Associated With Pesticide Mixturesmentioning

confidence: 99%

Pesticide Mixtures

Raymond¹

2011

Pesticides - Formulations, Effects, Fate

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Section: Benefits Associated With Pesticide Mixturesmentioning

confidence: 99%

Pesticide Mixtures

Raymond¹

2011

Pesticides - Formulations, Effects, Fate

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“…positive (Morris, 1975;Habib and Garcia, 1981;Kusmanova, 1981;Seleena et al, 1999). The results observed for B. thuringiensis var.…”

mentioning

confidence: 99%

Compatibility among insecticides, acaricides, and Bacillus thuringiensis used to control Tetranychus urticae (Acari: Tetranychidae) and Heliothis virescens (Lepidoptera: Noctuidae) in cotton fields

Agostini¹,

Duarte²,

Volpe³

et al. 2014

Afr. J. Agric. Res.

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Tetranychus urticae and Heliothis virescens are major pests of cotton and have been managed by the indiscriminate use of acaricides and insecticides. The combined use of chemical and biological products, in particular Bacillus thuringiensis-based products, and the rotation of active ingredients can reduce the negative effects of pesticides and can contribute to the management of resistance, control costs, and help the environment. Therefore, research on the compatibility of control tactics is essential to successful integrated pest management (IPM). The objective of this research was to determine the compatibility of chemical pesticides and a B. thuringiensis-based product in the control of T. urticae and H. virescens in cotton fields. Spiromesifen was compatible with B. thuringiensis var. kurstaki. However, it reduced the development of B. thuringiensis by 40 to 65% relative to the control. Bifenthrin was toxic or moderately toxic to B. thuringiensis depending on the concentration used. Compared to the control, the vegetative growth of B. thuringiensis was 20% lower when used with bifenthrin. Bifenthrin + carbosulfan was highly toxic to B. thuringiensis, decreasing its vegetative growth to less than 1% compared to the control. Spiromesifen was compatible with the recommended concentrations of B. thuringiensis var. kurstaki.

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Insecticide synergists: Role, importance, and perspectives

B‐Bernard

Philogène

1993

Journal of Toxicology and Environmental Health

137

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Synergists have been used commercially for about 50 years and have contributed significantly to improve the efficacy of insecticides, particularly when problems of resistance have arisen. In the current article we review the nature, mode of action, role in resistance management, natural occurrence, and significance in research of insecticide synergists. These natural or synthetic chemicals, which increase the lethality and effectiveness of currently available insecticides, are by themselves considered nontoxic. The mode of action of the majority of synergists is to block the metabolic systems that would otherwise break down insecticide molecules. They interfere with the detoxication of insecticides through their action on polysubstrate monooxygenases (PSMOs) and other enzyme systems. The role of synergists in resistance management is related directly to an enzyme-inhibiting action, restoring the susceptibility of insects to the chemical, which would otherwise require higher levels of the toxicant for their control. For this reason synergists are considered straightforward tools for overcoming metabolic resistance, and can also delay the manifestation of resistance. However, the full potential of these compounds may not have been realized in resistance management. Synergists have an important role to play in the ongoing investigation of insecticide toxicity and mode of action and the nature of resistance mechanism. They also can be used in understanding the effects of other xenobiotics in non-target organisms. The search for and the need of new molecules capable of synergizing existing or new pesticides has reactivated the identification and characterization of secondary plant compounds possessing such activity. Plants do possess and utilize synergists to overcome the damage produced by phytophages. This has to be exploited in pest management programs. Hopefully, it will lead to a new perspective on the nature and significance of synergism.

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Compatibility and synergism between Bacillus thuringiensis var. kurstaki and two chemical insecticides

Cited by 3 publications

References 12 publications

Pesticide Mixtures

Pesticide Mixtures

Compatibility among insecticides, acaricides, and Bacillus thuringiensis used to control Tetranychus urticae (Acari: Tetranychidae) and Heliothis virescens (Lepidoptera: Noctuidae) in cotton fields

Insecticide synergists: Role, importance, and perspectives

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