Oviposition Deterrents from Potato, Wheat Germ, Larval Frass, and Artificial Diet for Agrotis segetum (Lepidoptera: Noctuidae)

1996 ◽  
Vol 25 (3) ◽  
pp. 653-658 ◽  
Author(s):  
Peter Anderson ◽  
Jan LöFqvist
Keyword(s):  
Wheat Germ ◽  
Artificial Diet ◽  
Agrotis Segetum ◽  
Oviposition Deterrents ◽  
Larval Frass ◽  
Lepidoptera Noctuidae

Oviposition Deterrents for Fall Armyworm (Lepidoptera: Noctuidae) from Larval Frass, Corn Leaves, and Artificial Diet 1

1986 ◽  
Vol 15 (2) ◽  
pp. 327-330 ◽  
Author(s):  
Allen L. Williams ◽  
Everett R. Mitchell ◽  
Robert R. Heath ◽  
Carl S. Barfield
Keyword(s):  
Artificial Diet ◽  
Fall Armyworm ◽  
Oviposition Deterrents ◽  
Larval Frass ◽  
Lepidoptera Noctuidae

The complete mitogenome of the turnip moth Agrotis segetum (Lepidoptera: Noctuidae)

2013 ◽  
Vol 25 (5) ◽  
pp. 345-347 ◽  
Author(s):  
Qiu-Ling Wu ◽  
Wen-Xia Cui ◽  
Bao-Zhen Du ◽  
Yun Gu ◽  
Shu-Jun Wei
Keyword(s):  
Agrotis Segetum ◽  
Turnip Moth ◽  
Complete Mitogenome ◽  
Lepidoptera Noctuidae

The concentration of lamdacyhalothrin and its effect on the cutworm Agrotis segetum (Lepidoptera: Noctuidae)

1991 ◽  
Vol 81 (2) ◽  
pp. 143-145 ◽  
Author(s):  
B.W. Blair
Keyword(s):  
Fourth Instar ◽  
Synthetic Pyrethroid ◽  
Agrotis Segetum ◽  
Economic Plant ◽  
Initial Screening ◽  
Pest Damage ◽  
Plant Damage ◽  
Antifeedant Effect ◽  
Equivalent Rate ◽  
Lepidoptera Noctuidae

AbstractDuring initial screening of the synthetic pyrethroid lamdacyhalothrin (PP 321) at a concentration of 44 and 22 mg/l and applied as a 30 ml drench over each plant against third to fourth instar cutworms, Agrotis segetum (Denis & Schiffermüller) in microplots, few died but they did not damage the plants. Reducing the concentrations to 11 and 5.5 mg/l increased mortality and plant damage. When A. segetum were confined on soil treated with the insecticide at concentrations of 22, 11 and 5.5 mg/l and sprayed at an equivalent rate of 500 l/ha, they all died within one day. The higher concentrations appeared to have a repellent and/or antifeedant effect, and it has been possible to reduce the concentration of lamdacyhalothrin to 12.5 mg/l (≡5.6g a.i./ha) for the drench treatment without risking economic plant damage. For insecticides that have repellent and/or antifeedant properties, it should be possible to balance lower concentrations with adequate protection of plants from pest damage.

Intraspecific variation in the Chrysodeixis includens (Walker) (Lepidoptera: Noctuidae) susceptibility to insecticides

2021 ◽  
Vol 51 ◽  
Author(s):  
Samanta Souza Restelatto ◽  
Paulo Eduardo Wille ◽  
Nayara Buss ◽  
Cleiton Luis Wille ◽  
Mari Inês Carissimi Boff ◽  
...  
Keyword(s):  
Intraspecific Variation ◽  
Dose Response ◽  
Response Curve ◽  
Artificial Diet ◽  
Reference Population ◽  
Dose Response Curve ◽  
Yield Losses ◽  
Lepidoptera Noctuidae ◽  
Chrysodeixis Includens

ABSTRACT The looper caterpillar Chrysodeixis includens (Walker) is considered the main defoliating pest in soybean crops, which contributes to yield losses. Delaying its resistance to insecticides is a major challenge in its management. This study aimed to characterize the susceptibility of C. includens to flubendiamide, cyantraniliprole, spinetoram and methomyl, as well as to establish a diagnostic concentration for monitoring resistance. The insecticide was applied to the surface of the artificial diet. For the dose-response curve, concentrations that resulted in 5 to 99 % mortality were used to estimate the lethal concentrations (LC50 and LC99) and resistance ratios (RR50 and RR99). The diagnostic concentrations were based on concentrations that provided 90 to 99 % mortality in the susceptible reference population. For flubendiamide and methomyl, the decrease in the susceptibility resulted in estimated RR50 of 6.2 to 24.2 and 4.4 to 19.6 times, respectively. For cyantraniliprole and spinetoram, there was little difference in susceptibility among the populations, with RR99 lower than 6.1 times. Differences in the susceptibility of C. includens were evident from concentrations of 0.5053, 5.053, 0.1579 and 28.42 μg cm-2, respectively for flubendiamide, cyantraniliprole, spinetoram and methomyl.

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