Enhancing Efficiency of Bacillus thuringiensis by Leaf Extract of Cupressus arizonica against Spodoptera exigua (Lep.: Noctuidae)

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MOHAMMADI D.; EIVAZIAN KARY N.; Sharifi Azar Z.

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Journal: Journal of Applied Research in Plant Protection Year:2020 | Volume:9 | Issue:1 Page(s): 80-105

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Title

Enhancing Efficiency of Bacillus thuringiensis by Leaf Extract of Cupressus arizonica against Spodoptera exigua (Lep.: Noctuidae)

Author(s)

MOHAMMADI D. | EIVAZIAN KARY N. | Sharifi Azar Z. | Issue Writer Certificate

Keywords

ECIQ1

Ethanolic extractQ1

Synergistic effectsQ1

Life spamQ1

Nutritional parametersQ2

Abstract

Bacillus thuringiensis generally applies for controlling of Spodoptera exigua larvae. Applying high doses for effective control increases the risk of resistance developing. Integration of different pest controlling tactics is a useful component of pest management by decreasing the applied doses. Here, the lethal and sublethal effects of Bacillus thuringiensis (Bt) in combination with Ethanolic extract of Cupressus arizonica (CA) on mortality and some biological parameters of Spodoptera exigua were evaluated. For bioassays, different concentrations of both agents, incorporated into artificial diet of insects. The results revealed that, larval mortality and Life spam, pupation and adult emergence were significantly affected. LC50 values of Bt was measured as 4. 25 and 0. 76 g/l in first and 7th days of experiments respectively. Efficiency of ingested food (ECI) decreased to 16. 1 and 17. 9% in combination treatments of Bt (2 g/l) with respectively 12. 5 and 6. 25 g/l of CA extract in comparison with controls as 38. 99%. Significantly higher larval mortality and adverse effects on Nutritional parameters of the pest in combination treatments confirm the suitability of this combination as a candidate for greenhouse and field studies to aim of reduce the Bt resistance phenomena frequency and sustainable control of pest population.

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APA: Copy

MOHAMMADI, D., EIVAZIAN KARY, N., & Sharifi Azar, Z.. (2020). Enhancing Efficiency of Bacillus thuringiensis by Leaf Extract of Cupressus arizonica against Spodoptera exigua (Lep.: Noctuidae). JOURNAL OF APPLIED RESEARCHES IN PLANT PROTECTION, 9(1 ), 80-105. SID. https://sid.ir/paper/376628/en

Vancouver: Copy

MOHAMMADI D., EIVAZIAN KARY N., Sharifi Azar Z.. Enhancing Efficiency of Bacillus thuringiensis by Leaf Extract of Cupressus arizonica against Spodoptera exigua (Lep.: Noctuidae). JOURNAL OF APPLIED RESEARCHES IN PLANT PROTECTION[Internet]. 2020;9(1 ):80-105. Available from: https://sid.ir/paper/376628/en

IEEE: Copy

D. MOHAMMADI, N. EIVAZIAN KARY, and Z. Sharifi Azar, “Enhancing Efficiency of Bacillus thuringiensis by Leaf Extract of Cupressus arizonica against Spodoptera exigua (Lep.: Noctuidae),” JOURNAL OF APPLIED RESEARCHES IN PLANT PROTECTION, vol. 9, no. 1 , pp. 80–105, 2020, [Online]. Available: https://sid.ir/paper/376628/en

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