Vegetable and tuber crop applications.

Bélair, Guy; Wright, D. J.; Curto, G.

doi:10.1079/9780851990170.0255

Cited by 7 publications

(6 citation statements)

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“…They can persist in soil for up to 2 years after application (Susurluk and Ehlers 2008), can be mass produced in vitro (Ehlers 2001) and have a high control potential when applied to control weevils (Curculionidae) in nurseries (van Tol and Raupp 2005), tuber crops (Bélair et al 2005) and forestry (Torr et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Potential of the entomopathogenic nematodes Steinernema feltiae, S. weiseri and Heterorhabditis bacteriophora for the biological control of the sugar beet weevil Bothynoderes punctiventris (Coleoptera: Curculionidae)

Susurluk

2008

J Pest Sci

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Potential of the entomopathogenic nematodes Steinernema feltiae, S. weiseri and Heterorhabditis bacteriophora for the biological control of the sugar beet weevil Bothynoderes punctiventris (Coleoptera: Curculionidae) Alper SusurlukAbstract The sugar beet weevil, Bothynoderes punctiventris Germ. (Coleoptera: Curculionidae), is one of the most damaging pests of sugar beets in Turkey and has been traditionally controlled by application of large amounts of insecticides. The current study used laboratory microcosms to evaluate the possibility of using entomopathogenic nematodes as an alternative control method. The nematodes Steinernema feltiae (strain TUR-S3), Steinernema weiseri (BEY) and Heterorhabditis bacteriophora (TUR-H2) had previously been isolated from Turkey. Nematode-induced mortality generally increased as soil temperature increased from 15 to 25°C but decreased when larvae were located deeper in soil. Heterorhabditis bacteriophora caused the highest larval mortality at 25°C at all depths (5-20 cm). Steinernema feltiae and S. weiseri were more eVective than H. bacteriophora at 15°C at all depths. Increasing the application rate of infective nematode dauer juveniles (DJs) aVected the number of DJs that penetrated each insect larva and the number of DJs produced per insect. The highest production of DJs per larva occurred at application rates of 50 DJs/larva for S. feltiae and S. weiseri and 100 DJs/larva for H. bacteriophora. Reproduction decreased again at higher application rates. Heterorhabditis bacteriophora had the highest reproductive capability. The results indicate that S. feltiae and S. weiseri might be more eVective against this pest early in the growing season when soil temperature is low and that H. bacteriophora might be more eVective later in the season when temperature increases.

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Section: Introductionmentioning

confidence: 99%

Potential of the entomopathogenic nematodes Steinernema feltiae, S. weiseri and Heterorhabditis bacteriophora for the biological control of the sugar beet weevil Bothynoderes punctiventris (Coleoptera: Curculionidae)

Susurluk

2008

J Pest Sci

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“…Because of their ability to infect various insects [ 26 ], the possibility of mass production by industrial techniques [ 27 ] and the relative safety to non-target organisms [ 28 ] and the environment [ 29 ], EPNs represent an attractive agent for the inundative biological control of many insect pests [ 30 ]. EPNs have been shown to infect and kill the CPB [ 31 , 32 ]; however, their efficiency against the CPB in the field is limited by various factors, including depth of beetle pupation, beetle migration and insensitivity of the adult beetles to nematode infection [ 33 ].…”

Section: Introductionmentioning

confidence: 99%

Laboratory Evaluation of Isaria fumosorosea CCM 8367 and Steinernema feltiae Ustinov against Immature Stages of the Colorado Potato Beetle

et al. 2016

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The Colorado potato beetle, Leptinotarsa decemlineata, has developed resistance to most registered pesticides and has become one of the most difficult insect pests to control. Development of new biopesticides targeting this pest might solve the resistance problem and contribute to sustainable crop production. Laboratory experiments were conducted to assess the efficacy of Isaria fumosorosea (syn. Paecilomyces fumosoroseus) strain CCM 8367 against L. decemlineata when applied alone or combined with the entomopathogenic nematode Steinernema feltiae. The last-instar larvae of the Colorado potato beetle showed the highest susceptibility to I. fumosorosea followed by pre-pupae and pupae. The median lethal concentration (LC50) was estimated to be 1.03×106 blastospores/ml. The strain CCM 8367 was more virulent, causing 92.6% mortality of larvae (LT50 = 5.0 days) compared to the reference strain Apopka 97, which caused 54.5% mortality (LT50 = 7.0 days). The combined application of the fungus with the nematodes increased the mortality up to 98.0%. The best results were obtained when S. feltiae was applied simultaneously with I. fumosorosea (LT50 = 2.0 days); later application negatively affected both the penetration rate and the development of the nematodes. We can conclude that the strain CCM 8367 of I. fumosorosea is a prospective biocontrol agent against immature stages of L. decemlineata. For higher efficacy, application together with an entomopathogenic nematode is recommended.

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“…(Hym., Trichogrammatidae) has been tested against eggs of A. assectella (Lorenz et al 2003;Zimmermann 2004). Entomopathogenic nematodes (EPNs) (Steinernematidae and Heterorhabditidae) are lethal obligate parasites of a large number of insect species (Smart 1995), and have been used against different economically important insect pests of vegetables (Bélair et al 2005). Due to the nematode's sensitivity to ultraviolet radiation and desiccation, applications to cryptic habitats or soil tend to be most efficacious .…”

Section: Introductionmentioning

confidence: 99%

Efficacy of Steinernema feltiae against the leek moth Acrolepiopsis assectella in laboratory and field conditions

Pino

Morton

2007

BioControl

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The susceptibility of larvae of the leek moth, Acrolepiopsis assectella Zeller (Lepidoptera: Acrolepiidae) to different concentrations of an autochthonous strain of Steinernema feltiae (Rhabditida: Steinernematidae) was examined in laboratory experiments using Petri dishes. The efficacy of this strain in pots and field experiments was also evaluated. High mortality (80%-100%) of leek moth larvae was observed when these larvae were exposed to low concentrations (3 · 10 3 to 1 · 10 4 IJs/m 2 ) of S. feltiae under laboratory conditions. Foliar application of 30,000 IJs/leek in pot experiments caused a 98% reduction in leek moth larvae. Field experiments showed a 87.7% reduction of leek moth larvae with the nematode treatment, significantly higher than the 22% reduction with the Bacillus thuringiensis treatment. The efficacy of the treatments with S. feltiae in relation to the microhabitat of the leek moth larvae between the interfolded leaves of the leek is discussed.

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Vegetable and tuber crop applications.

Cited by 7 publications

References 0 publications

Potential of the entomopathogenic nematodes Steinernema feltiae, S. weiseri and Heterorhabditis bacteriophora for the biological control of the sugar beet weevil Bothynoderes punctiventris (Coleoptera: Curculionidae)

Potential of the entomopathogenic nematodes Steinernema feltiae, S. weiseri and Heterorhabditis bacteriophora for the biological control of the sugar beet weevil Bothynoderes punctiventris (Coleoptera: Curculionidae)

Laboratory Evaluation of Isaria fumosorosea CCM 8367 and Steinernema feltiae Ustinov against Immature Stages of the Colorado Potato Beetle

Efficacy of Steinernema feltiae against the leek moth Acrolepiopsis assectella in laboratory and field conditions

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