Aerial electrostatic‐charged sprays for deposition and efficacy against sweet potato whitefly (<i>Bemisia tabaci</i>) on cotton

Latheef, M. A.; Carlton, J. B.; Kirk, I. W.; Hoffmann, W. Clint

doi:10.1002/ps.1748

Cited by 33 publications

(20 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This method consists of a coating that can be applied on different substrates and has an electrostatic charge that binds particles via polarity. Products that incorporate electrostatic binding forces are already being used in insect pest control, for example as aerial electrostatic-charged insecticide sprays for the control of sweet potato whitefly (Bemisia tabaci) (24) or as electrostatic mating-disruption powder against codling moth (Cydia pomonella) (25). However, this is the first time, to our knowledge, that electrostatic forces have been used in a coating that can be deployed on a variety of surfaces and that can bind different types of particles.…”

mentioning

confidence: 99%

Electrostatic coating enhances bioavailability of insecticides and breaks pyrethroid resistance in mosquitoes

Andriessen

Snetselaar

Suer

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

Insecticide resistance poses a significant and increasing threat to the control of malaria and other mosquito-borne diseases. We present a novel method of insecticide application based on netting treated with an electrostatic coating that binds insecticidal particles through polarity. Electrostatic netting can hold small amounts of insecticides effectively and results in enhanced bioavailability upon contact by the insect. Six pyrethroid-resistant Anopheles mosquito strains from across Africa were exposed to similar concentrations of deltamethrin on electrostatic netting or a standard longlasting deltamethrin-coated bednet (PermaNet 2.0). Standard WHO exposure bioassays showed that electrostatic netting induced significantly higher mortality rates than the PermaNet, thereby effectively breaking mosquito resistance. Electrostatic netting also induced high mortality in resistant mosquito strains when a 15-fold lower dose of deltamethrin was applied and when the exposure time was reduced to only 5 s. Because different types of particles adhere to electrostatic netting, it is also possible to apply nonpyrethroid insecticides. Three insecticide classes were effective against strains of Aedes and Culex mosquitoes, demonstrating that electrostatic netting can be used to deploy a wide range of active insecticides against all major groups of disease-transmitting mosquitoes. Promising applications include the use of electrostatic coating on walls or eave curtains and in trapping/ contamination devices. We conclude that application of electrostatically adhered particles boosts the efficacy of WHO-recommended insecticides even against resistant mosquitoes. This innovative technique has potential to support the use of unconventional insecticide classes or combinations thereof, potentially offering a significant step forward in managing insecticide resistance in vector-control operations.electrostatic coating | insecticide | resistance management | mosquito | malaria

show abstract

mentioning

confidence: 99%

Electrostatic coating enhances bioavailability of insecticides and breaks pyrethroid resistance in mosquitoes

Andriessen

Snetselaar

Suer

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

show abstract

“…In summary, the coating binds to particles of any insecticide through polarity, and can retain the charge despite multiple washes [27]. Versions of this technology already existed for various applications including in air cleaners and filters [28], pollen binders on window screens for prevention allergic exposures [29], and even hair dryers [30], but it had also been used to deliver aerial insecticides [31] and mating disruption pheromones [32] to control agricultural pests.…”

Section: Use Of Electrostatic Coating In the Eave Tubes Ensures High mentioning

confidence: 99%

The paradigm of eave tubes: scaling up house improvement and optimizing insecticide delivery against disease-transmitting mosquitoes

Okumu

2017

Malar J

View full text Add to dashboard Cite

Control of mosquito-borne diseases is greatly compromised by spread of insecticide resistance, high implementation costs and sub-optimal compliance among users. Improved housing has potential to reduce malaria transmission nearly as much as long-lasting insecticide-treated nets (LLINs), while also preventing other arthropod-borne diseases and improving overall well-being. Yet, it is hardly promoted as mainstream intervention, partly because of high costs, minimal communal benefits to people in non-improved houses, and low scalability. By exploiting biological observations of mosquito behaviours around dwellings, scientists have developed a new approach that integrates effective vector control into housing developments. The technique involves blocking eave spaces in local houses, leaving a few cylindrical holes into which plastic tubes with insecticide-laden electrostatic nettings are inserted. Where houses already have blocked eaves, these cylindrical holes are drilled and the tubes inserted. The eave tube technology, as it is called, is an innovative new approach for implementing housing improvements, by creating a new scalable product that can be integrated in houses during or after construction. It takes away insecticides from proximity of users, and instead puts them where mosquitoes are most likely to enter houses, thereby reducing insecticidal exposure among household occupants, while maximizing exposure of mosquitoes. This way, lower quantities of insecticides are used, better house ventilation achieved, intervention costs reduced, and mass communal benefits achieved even were vectors are resistant to similar insecticides when delivered conventionally. There are however still some critical pieces missing, notably epidemiological, social and economic evidence that the above assertions are true and sustainable. Besides, there also some technical limitations to be considered, namely: (1) need for extensive house modifications before eave tubes are inserted, (2) ineligibility of poorest and highest-risk households living in housing structures not amenable to eave tubes, and (3) poor synergies when eave tubes are combined with LLINs or IRS in same households. Overall, this paradigm significantly improves delivery of insecticides against disease-transmitting mosquitoes, and provides opportunities for scaling-up the long-neglected concept of house improvement as a malaria intervention.

show abstract

“…Recently, Latheef et al (2009) compared aerial sprays using 82 inductioncharged and uncharged hydraulic nozzles (output 0.225 L/min) to apply 4.68 litres per hectare on cotton to determine if the spray distribution would give adequate control of whiteflies. Their results indicated a potential for increased efficacy using a charged spray, but additional research was needed to improve the charge-to-mass ratio to improve deposition on the lower surfaces of cotton leaves.…”

Section: Electrostatically Charged Nozzles Induction Charging Nozzlesmentioning

confidence: 99%

Electrostatically charged sprays

Law¹

2014

Pesticide Application Methods

View full text Add to dashboard Cite

Aerial electrostatic‐charged sprays for deposition and efficacy against sweet potato whitefly (Bemisia tabaci) on cotton

Cited by 33 publications

References 17 publications

Electrostatic coating enhances bioavailability of insecticides and breaks pyrethroid resistance in mosquitoes

Electrostatic coating enhances bioavailability of insecticides and breaks pyrethroid resistance in mosquitoes

The paradigm of eave tubes: scaling up house improvement and optimizing insecticide delivery against disease-transmitting mosquitoes

Electrostatically charged sprays

Contact Info

Product

Resources

About