Testing IPM protocols for Helicoverpa armigera in processing tomato: egg-count- vs. fruit-count-based damage thresholds using Bt or chemical insecticides

Torres‐Vila, Luis M.; Rodríguez‐Molina, M. C.; Lacasa-Plasencia, A

doi:10.1016/s0261-2194(03)00137-6

Cited by 13 publications

(13 citation statements)

References 9 publications

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“…and Nezara viridula; and aphids Macrosiphum euphorbiae (Hartz et al 2008). In Pakistan, the tomato fruitworm Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) is known as the key pest attacking many crops including chickpea, cotton, tomato, potato, tobacco, okra, sunflower, cabbage and pigeon pea in the field (Callahan et al 1972;Zalucki et al 1986;Ahmed 1994;Torres-Vila et al 2003;Talekar et al 2006;Wakil et al 2009a,b). There are a number of reasons it is the key pest, including high polyphagy, wide geographical range, mobility, migratory potential, facultative diapause, high fecundity, propensity to develop resistance to insecti-cides and larval feeding behavior (Zalucki et al 1986;Fitt 1989;Zalucki 1991;Anonymous 2000;Torres-Vila et al 2002a,b).…”

Section: Introductionmentioning

confidence: 99%

Distribution of Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) in tomato fields and its relationship to weather factors

Wakil

Ghazanfar

Kwon

et al. 2010

Entomological Research

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A survey was conducted in tomato fields at different localities to assess the distribution of tomato fruitworm Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) in Punjab Province, Pakistan. The effect of weather factors on its population was also investigated. Eleven tomato‐growing districts were selected and data for larval population and fruit infestation were recorded. The maximum larval population (5.2 larvae/plant) of H. armigera was recorded in Bahawalpur district with 32.6% fruit infestation. However, the minimum larval population (1.4 larvae/plant) inflicted 14.7% fruit infestation in Rawalpindi district. The temperature was positively correlated while relative humidity showed negative interaction with the larval population and fruit infestation.

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Section: Introductionmentioning

confidence: 99%

Distribution of Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) in tomato fields and its relationship to weather factors

Wakil

Ghazanfar

Kwon

et al. 2010

Entomological Research

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“…The cotton bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae), is a polyphagous pest that damages numerous kinds of cultivated crop, including cotton 1. The outbreak of this pest is partly due to its ability to develop resistance to commonly used insecticides 2. Owing to heavy selection pressure over the past three decades, H. armigera has exhibited resistance to all conventional insecticide classes such as organochlorine, organophosphate, carbamate and pyrethroid insecticides 3–6.…”

Section: Introductionmentioning

confidence: 99%

Sublethal effects of spinosad on survival, growth and reproduction of Helicoverpa armigera (Lepidoptera: Noctuidae)

Wang

Gong

et al. 2008

Pest Management Science

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“…migratory ability and absence of natural enemies) cannot be manipulated or controlled directly. However, alteration of agronomic practices, such as the timing and the placement of crops, could prove to be the most effective approach of all in reducing H. armigera abundance and hence the need for excessive and continuous reliance on insecticide applications (Torres-Vila et al 2003). A rotational scheme for insecticide that allows use of insecticides with different modes of action should be adopted.…”

Section: Discussionmentioning

confidence: 99%

Effect of rotational use of insecticides on pyrethroids resistance in Helicoverpa armigera (Lep.: Noctuidae)

Razaq

Suhail

Arif

et al. 2007

J Applied Entomology

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To investigate fluctuation in susceptibility to insecticides in the field, natural populations of Helicoverpa armigera were collected from the same field in the region of Multan, Pakistan in 2002 and 2003. The populations were examined against pyrethroids (viz. cypermethrin, esfenvalerate and fenpropathrin) and new insecticides (viz. spinosad, abamectin and indoxacarb). In 2002, the resistance ratio (RR) of cypermethrin and esfenvalerate was significantly higher than fenpropahrin compared with susceptible population. The susceptibility to cypermethrin, esfenvalerate and fenpropathrin increased significantly in 2003; however, the RR for cypermethrin was about half the RR (38) of esfenvalerate (101) and fenpropathrin (89). The toxicity of spinosad, abamectin and indoxacarb was identical in both years. In the field experiments, abamectin was more effective than other compounds tested whereas fenpropathrin, cypermethrin and esfenvalerate had similar toxicity. These results might have important implications in resistance management and suggest that the rotational use of spinosad, abamectin and indoxacarb could help to avoid the development of multiple resistant in H. armigera.

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Testing IPM protocols for Helicoverpa armigera in processing tomato: egg-count- vs. fruit-count-based damage thresholds using Bt or chemical insecticides

Cited by 13 publications

References 9 publications

Distribution of Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) in tomato fields and its relationship to weather factors

Distribution of Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) in tomato fields and its relationship to weather factors

Sublethal effects of spinosad on survival, growth and reproduction of Helicoverpa armigera (Lepidoptera: Noctuidae)

Effect of rotational use of insecticides on pyrethroids resistance in Helicoverpa armigera (Lep.: Noctuidae)

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