Biological efficacy of some biorational and conventional insecticides in the control of different stages of the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae)

Osman, Mohamed

doi:10.17221/27/2009-pps

Cited by 8 publications

(6 citation statements)

References 32 publications

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“…Neem extract products inhibited feeding of adult and larval CPB in laboratory studies [ 105 , 106 , 107 ] but are generally slower to bring about control in the field. Compared to our results, other field studies reported similar control effectiveness with Entrust (>95% control) and Azera (68% to 77% control) [ 103 , 108 , 109 , 110 , 111 ]. Nault and Seaman [ 108 ] also found no significant difference in control between low and high application rates of Entrust.…”

Section: Resultssupporting

confidence: 79%

Comparative Efficacy of Common Active Ingredients in Organic Insecticides Against Difficult to Control Insect Pests

Dively

Patton

Barranco

et al. 2020

Insects

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There exists a lack of control efficacy information to enable decision-making about which organic insecticide product works best for a given insect pest. Here, we summarize results of 153 field trials on the control efficacy of common active ingredients in organic insecticides against 12 groups of the most difficult to control insect pests. These trials evaluated primarily the organic products Entrust (spinosad), Azera (pyrethrin and azadirachtin), PyGanic (pyrethrin) and Neemix (azadirachtin), which reduced pest infestations by an overall 73.9%, 61.7%, 48.6% and 46.1% respectively, averaged across all trials. Entrust was the most effective control option for many insect pests, particularly providing >75% control of flea beetles, Colorado potato beetle, cabbageworms and alfalfa weevil, but was relatively ineffective against true bugs and aphids. Azera provided >75% control of green peach aphid, flea beetles, Japanese beetle, Mexican bean beetle, potato leafhopper and cabbageworms. PyGanic was less effective than Entrust and Azera but still provided >75% control of green peach aphid, flea beetles and potato leafhopper. The growth inhibition effects of azadirachtin in Neemix were particularly effective against larvae of Mexican bean beetle and Colorado potato beetle but was generally less effective in trials with insect infestations consisting mainly of adult stages. Those insect pests that were particularly difficult to control included thrips, stinkbugs, cucumber beetles and fruitworms. Several caveats pertaining to the application of the results are discussed.

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Section: Resultssupporting

confidence: 79%

Comparative Efficacy of Common Active Ingredients in Organic Insecticides Against Difficult to Control Insect Pests

Dively

Patton

Barranco

et al. 2020

Insects

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“…Experiments revealed that a temperature of 15 • C with a concentration of 0.2% in combination caused significantly higher mortality of adult insects than other temperatures and concentrations [17]. Similar positive effects were experienced in other laboratory and field experiments for spinosad and combinations with other ecological insecticides [96][97][98]. In addition to spinosad, the mixture of avermectin B1 (80%) and avermectin B1b (29%), and avermectin C also reached strong efficacy against third instar larvae and adults [96].…”

Section: Environmentally Friendly Insecticides Synergists and Their C...supporting

confidence: 70%

“…Concerning combinations with spinosad, mixtures with Btt, azadirachtinand pyrethrin proved to be very active in both laboratory and field studies (Barčić et al, 2006). Furthermore, the efficacy of low doses of spinosad, Btt, and azadirachtin has been detected and the effect of combinations for these three alternative insecticides has been proposed [97].…”

Section: Environmentally Friendly Insecticides Synergists and Their C...mentioning

confidence: 99%

Alternatives to Synthetic Insecticides in the Control of the Colorado Potato Beetle (Leptinotarsa decemlineata Say) and Their Environmental Benefits

2020

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In this study, we review the wide range of alternative control methods used to this day to control the Colorado potato beetle (Leptinotarsa decemlineata Say), the biggest potato pest globally. We further categorize and highlight the advantages and disadvantages of each method by comparing them to conventional insecticides. In a second step, we point out the current knowledge about positive and negative impacts of using alternative control methods. By this, we illustrate how alternative control methods, farmers’ activities, and environmental factors (e.g., biodiversity and ecosystem health) are heavily linked in a cycle with self-reinforcing effects. In detail, the higher the acceptance of farmers to use alternative control methods, the healthier the ecosystem including the pest’s enemy biodiversity. The following decrease in pest abundance possibly increases the yield, profit, and acceptance of farmers to use less conventional and more alternative methods. Overall, we try to balance the positive and negative sides of alternative control methods and combine them with current knowledge about environmental effects. In our view, this is a fundamental task for the future, especially in times of high species loss and increasing demand for environmentally friendly agriculture and environmentally friendly products.

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“…Similarly, the insecticide is applied to control the thrips Frankliniella spp. in horticultural and ornamental crops40 and Leptinotarsa decemlineata L. in potatoes 41. Furthermore, even though it has not yet been registered worldwide, spinosad is active against several stored‐grain pests 42, 43…”

Section: The Spinosad: History and Current Use Worldwidementioning

confidence: 99%

“…in horticultural and ornamental crops 40 and Leptinotarsa decemlineata L. in potatoes. 41 Furthermore, even though it has not yet been registered worldwide, spinosad is active against several stored-grain pests. 42,43 After spinosyn introduction, spinosad resistance events were documented for some insects, such as houseflies and fruit flies, Lepidoptera and thrips species.…”

Section: The Spinosad: History and Current Use Worldwidementioning

confidence: 99%

The non‐target impact of spinosyns on beneficial arthropods

Biondi¹,

Mommaerts²,

Smagghe³

et al. 2012

Pest Management Science

339

169

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Spinosyn-based products, mostly spinosad, have been widely recommended by extension specialists and agribusiness companies; consequently, they have been used to control various pests in many different cropping systems. Following the worldwide adoption of spinosad-based products for integrated and organic farming, an increasing number of ecotoxicological studies have been published in the past 10 years. These studies are primarily related to the risk assessment of spinosad towards beneficial arthropods. This review takes into account recent data with the aim of (i) highlighting potentially adverse effects of spinosyns on beneficial arthropods (and hence on ecosystem services that they provide in agroecosystems), (ii) clarifying the range of methods used to address spinosyn side effects on biocontrol agents and pollinators in order to provide new insights for the development of more accurate bioassays, (iii) identifying pitfalls when analysing laboratory results to assess field risks and (iv) gaining increasing knowledge on side effects when using spinosad for integrated pest management (IPM) programmes and organic farming. For the first time, a thorough review of possible risks of spinosad and novel spinosyns (such as spinetoram) to beneficial arthropods (notably natural enemies and pollinators) is provided. The acute lethal effect and multiple sublethal effects have been identified in almost all arthropod groups studied. This review will help to optimise the future use of spinosad and new spinosyns in IPM programmes and for organic farming, notably by preventing the possible side effects of spinosyns on beneficial arthropods.

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Biological efficacy of some biorational and conventional insecticides in the control of different stages of the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae)

Cited by 8 publications

References 32 publications

Comparative Efficacy of Common Active Ingredients in Organic Insecticides Against Difficult to Control Insect Pests

Comparative Efficacy of Common Active Ingredients in Organic Insecticides Against Difficult to Control Insect Pests

Alternatives to Synthetic Insecticides in the Control of the Colorado Potato Beetle (Leptinotarsa decemlineata Say) and Their Environmental Benefits

The non‐target impact of spinosyns on beneficial arthropods

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