Beet Armyworm (Lepidoptera: Noctuidae) Control on Cotton in Louisiana

Mascarenhas, V. J.; Leonard, B. R.; Burris, E.; Graves, J. B.

doi:10.2307/3495582

Cited by 25 publications

(22 citation statements)

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“…Liu et al (1999) observaram controle de 100% de Trichoplusia ni (Hübner) em repolho com espinosade no dia da aplicação e de 26,7; 65 e 86,3% aos 12 dias após aplicação nas concentrações de 5,1; 51 e 105 g de i.a./ha, respectivamente. Mascarenhas et al (1996) também verificaram menores intensidades de ataque de Spodoptera exigua (Hübner), ao algodoeiro até dez dias após aplicação de 80 g de i.a./ha de espinosade.…”

Section: Resultsunclassified

Compatibilidade de inseticidas e acaricidas com o percevejo predador Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) em algodoeiro

Torres¹,

Silva-Torres²,

Silva³

et al. 2002

Neotrop. Entomol.

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-The objectives of this work were to study the insecticides espinosad, lambdacyhalothrin and monocrotophos on the control of Alabama argillacea (Hübner), the compatibility of these insecticides with the predatory stinkbug Podisus nigrispinus (Dallas), and the effects of the insecticides and acaricides methiocarb, pymetrozine, thiamethoxam, abamectin, diafenthiuron, dicofol and propargite on the predatory stinkbug behavior preying upon A. argillacea under field conditions. More than 90% of cotton leafworm control was obtained at the day 0 of application with all insecticides. Control of A. argillacea by lambdacyhalothrin (20 g a.i./ha) and monocrotophos (240 and 320 g a.i./ha) was observed up to day 3 after application; while spinosad (30 and 60 g a.i./ha) prolonged control up to day 5. Monocrotophos and lambdacyhalothrin were significantly more toxic to P. nigrispinus compared to spinosad. Toxicity of monocrotophos and lambdacyhalothrin to P. nigrispinus was evident up to day 3 after application. Survival of P. nigrispinus was affected by methiocarb, thiamethoxam, diafenthiuron, abamectin and sulfur one day after application and only under thiamethoxam treatment after three days. Pymetrozine, dicofol and propargite did not affect P. nigrispinus survival compared to untreated plants. Podisus nigrispinus at the day of application did not prey on A. argillacea under methiocarb treatment, and the predation rate was affected under thiamethoxam, abamectin, diafenthiuron and sulfur treatments at the day of application and after three days. The insecticides pymetrozine and spinosad, and the acaricides dicofol and propargite were compatible to P. nigrispinus and should be considered within a cotton pest management program.KEY WORDS: Integrated pest management, pymetrozine, spinosad, methiocarb, thiamethoxam.RESUMO -Os objetivos deste trabalho foram estudar a ação dos inseticidas espinosade, lambdacialotrina e monocrotofós no controle do curuquerê-do-algodoeiro Alabama argillacea (Hübner), sua compatibilidade com o percevejo predador Podisus nigrispinus (Dallas), e os efeitos dos inseticidas e acaricidas metiocarbe, pimetrozine, tiametoxam, abamectim, diafentiurom, dicofol e propargite na predação de A. argillacea por P. nigrispinus no campo. Inseticidas e concentrações utilizadas proporcionaram controle de A. argillacea acima de 90% no dia da aplicação. O controle de A. argillacea por lambdacialotrina (20 g i.a./ha) e monocrotofós (240 e 320 g i.a./ha) foi observado até três dias após aplicação, enquanto espinosade (30 e 60 g i.a./ha) prolongou o controle acima de 90% até cinco dias. Monocrotofós e lambdacialotrina foram significativamente mais tóxicos para P. nigrispinus comparado a espinosade. O efeito residual de monocrotofós e lambdacialotrina para P. nigrispinus foi evidente até três dias após a aplicação. A sobrevivência de P. nigrispinus foi afetada por metiocarbe, tiametoxam, diafentiurom, abamectim e enxofre após um dia, e apenas por tiametoxam após três dias da aplicação. Pimetrozine, dicofol e proparg...

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Section: Resultsunclassified

Compatibilidade de inseticidas e acaricidas com o percevejo predador Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) em algodoeiro

Torres¹,

Silva-Torres²,

Silva³

et al. 2002

Neotrop. Entomol.

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“…Outbreaks of this insect in cotton are often associated with multiple early-season treatments with broadspectrum insecticides, especially organophosphates, which are intended to reduce populations of key pests like boll weevil, Anthonomus grandis grandis Boheman; pink bollworm, Pectinophora gossypiella (Saunders); or lygus bugs (Lygus spp. ), but which severely reduce natural enemy numbers as well (Eveleens et al 1973;Stolz and Stern 1978;Burris et al 1994;Mascarenhas et al 1996;Ruberson et al 1994bRuberson et al , 1999.…”

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confidence: 97%

Location of Beet Armyworm (Lepidoptera: Noctuidae) Egg Mass Deposition within Canopies of Cotton and Pigweed

2001

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“…Mascarenhas et al (1996Mascarenhas et al ( , 1998a detected less than a three-fold difference in tebufenozide susceptibility using a diet overlay assay of neonates from a laboratory strain (USDA-ARS, Stoneville, MS) and Þeld populations taken from Alabama, California, Mississippi, Louisiana, Texas, and Mexico. Mascarenhas et al (1998b) observed a Ϸ10-fold difference in tebufenozide and methoxyfenozide susceptibility among Louisiana Þeld populations and a laboratory strain (ECOGEN) in Þve day diet overlay bioassays of third instars.…”

mentioning

confidence: 99%

Pro-active Management of Beet Armyworm (Lepidoptera: Noctuidae) Resistance to Tebufenozide and Methoxyfenozide: Baseline Monitoring, Risk Assessment, and Isolation of Resistance

Moulton¹,

Pepper²,

Jansson³

et al. 2002

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Susceptibility to tebufenozide and methoxyfenozide of beet armyworm [Spodoptera exigua (Hübner)] from the southern United States and Thailand was determined through exposure of first and third instars to dipped cotton leaves. Among the field populations evaluated, tebufenozide LC50 values for first and third instars, respectively, ranged from 0.377 to 4.41 and 4.37-46.6 microg (AI) /ml of solution. Methoxyfenozide LC50 values for first and third instars of field populations ranged from 0.058 to 0.487 and 0.601-3.83 microg (AI)/ml of solution. A Thailand field strain exhibiting reduced susceptibility to both compounds was subjected to intense laboratory selection for three nonconsecutive generations. At the LC50 and LC90, selected Thailand strains were 45-68 times and 150-1,500 times less susceptible to tebufenozide and 340-320 times and 120-67 times less susceptible to methoxyfenozide as first and third instars, respectively, when compared with the laboratory reference strain. Among the U.S. field populations evaluated, ones from Belle Glade, FL, and Florence, SC, were generally the most susceptible and ones from Maricopa and Parker, AZ, were the least susceptible. Selection of the Thailand field strain with tebufenozide reduced susceptibility to both compounds, and selection of Thailand strains previously pressured with either compound further reduced susceptibility to both, suggesting at least some commonality of resistance mechanism. Characterization of this resistance will provide information that will be helpful for pro-active management of resistance for this valuable group of insecticides.

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Beet Armyworm (Lepidoptera: Noctuidae) Control on Cotton in Louisiana

Cited by 25 publications

References 0 publications

Compatibilidade de inseticidas e acaricidas com o percevejo predador Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) em algodoeiro

Compatibilidade de inseticidas e acaricidas com o percevejo predador Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) em algodoeiro

Location of Beet Armyworm (Lepidoptera: Noctuidae) Egg Mass Deposition within Canopies of Cotton and Pigweed

Pro-active Management of Beet Armyworm (Lepidoptera: Noctuidae) Resistance to Tebufenozide and Methoxyfenozide: Baseline Monitoring, Risk Assessment, and Isolation of Resistance

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