An electric field strongly deters whiteflies from entering window-open greenhouses in an electrostatic insect exclusion strategy

Nonomura, Teruo; Matsuda, Yoshinori; Kakutani, Koji; Kimbara, Junji; Osamura, Kazumi; Kusakari, Shin-ichi; Toyoda, Hideyoshi

doi:10.1007/s10658-012-0014-5

“…Previously we demonstrated that SD-screens attached to the window of a greenhouse repelled insects, as the insects avoided the electric field Nonomura et al, 2012). Also in the current experiments, we designed a greenhouse assay to confirm the repelling function of SD-screens attached to windows.…”

Section: Resultsmentioning

confidence: 74%

Prevention of Whitefly Entry from a Greenhouse Entrance by Furnishing an Airflow-Oriented Pre-Entrance Room Guarded with Electric Field Screens

Nonomura¹,

Matsuda²,

Kakutani³

et al. 2014

JAS

Self Cite

View full text Add to dashboard Cite

Two types of an electric field screen were used to exclude whiteflies from a greenhouse. Singly charged dipolar electric field screen had insulated conductor iron wires arrayed in parallel (ICW-layer), two earthed metal nets on both sides of the ICW-layer, and a direct current voltage generator. Screens were attached to the lateral windows of the greenhouse to repel whiteflies that approached the nets. To electrostatically guard the greenhouse entrance, doubly charged dipolar electric field screens (DD-screens) were used to capture whiteflies entering through the door. The ICWs, oppositely charged with equal voltages, were arrayed one after the other, and an insulator board or net was placed on one side of the ICW-layer. ICWs captured whiteflies entering an electric field of DD-screens. A small pre-entrance room was constructed at the entrance area, and three DD-screens (with yellow and gray board or gray net) were installed in the pre-entrance room taking into consideration the airflow inside the room, as most whiteflies were brought in by the air when the door was opened. Two DD-screens with the board were useful for directing the wind toward the wall into which the netted DD-screen was integrated. Insects were eliminated by this screen, and the pest-free air was circulated inside the greenhouse. The yellow-boarded DD-screen was highly attractive because of the photo-selective movement of the whiteflies and was effective for trapping the whiteflies when there was no wind. Our electrostatic method is effective at keeping the greenhouse pest-free throughout the entire period of tomato cultivation.

show abstract

“…Despite the success of an electric field in pathogen control, a preliminary attempt to utilize this device for pest control was unsuccessful, because the electrostatic force of the spore precipitator was insufficient to retain trapped adult whiteflies. Successful application of the electric field screen enabled the management of whiteflies and other greenhouse pests [14,15,19,20].…”

Section: Insect-capturing Function Of a Double-charged Dipolar Electrmentioning

confidence: 99%

“…During our research, we devised a new method to generate a dipolar static electric field via single charging ( Figure 1C). The electric field screen creating this field exhibited a revolutionary function for repelling insect pests [19,51,52]. An ICW charged with a negative voltage causes dielectric polarization within the insulating coating, creating a negatively charged insulator surface.…”

Section: Insect-repelling Function Of a Single-charged Dipolar Electrmentioning

confidence: 99%

“…Initially, the test apparatus was conceived as a new device for capturing airborne spores of phytopathogenic fungi during crop cultivation in greenhouses [16]. Physical methods, especially those exploiting electrostatic phenomena, can generate physical forces sufficiently strong to catch airborne fungal spores [17] or small flying insects that may pass through the conventional insect netting used to protect greenhouse crops [14,15,[18][19][20][21][22]. If an effective force could be generated, an electrostatic approach would be an extremely promising tool to provide a spore-free, pest-free space for crop plants in greenhouse environments ( Figure 1A).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Promising Physical Pest-Control System Demonstrated in a Greenhouse Equipped with Simple Electrostatic Devices that Excluded all Insect Pests

Takikawa¹,

Kakutani²,

Matsuda³

et al. 2019

Preprint

Self Cite

View full text Add to dashboard Cite

Applied electrostatic engineering can be used to construct greenhouses that prevent entry of insect pests. Two types of electric field screen were used to exclude pests from the greenhouse: single- and double-charged dipolar electric field screens (S- and D-screen, respectively). The S-screen consisted of iron insulated conductor wires (ICWs) arrayed in parallel (ICW-layer), a grounded metal net on either side of the ICW-layer, and a direct current voltage generator. S-screens were attached to the side windows of the greenhouse to repel whiteflies (Bemisia tabaci) that approached the nets. The D-screen was installed in a small anteroom at the greenhouse entrance to capture whiteflies entering through it. The ICW-layers of the D-screen were oppositely charged with equal voltages and arrayed alternately, and an insulator board or grounded metal net was placed on one side of the ICW-layer. The ICW-layers captured whiteflies entering the electric field of the double-charged dipolar electric field. Three screens equipped with yellow or gray boards or a grounded metal net were installed in the anteroom based on the airflow inside the room, as most whiteflies were brought in by air when the door was opened. Two D-screens with boards were useful for directing the airflow toward the wall with the netted D-screen. This screen eliminated the insects and the pest-free air was circulated inside the greenhouse. The D-screen with the yellow board attracted the whiteflies and was effective for trapping them when there was no wind. Our method kept the greenhouse pest-free throughout the entire period of tomato (Solanum lycopersicum) cultivation.

show abstract

“…Despite the success of an electric field in pathogen control, a preliminary attempt to utilize this device for pest control was unsuccessful, because the electrostatic force of the spore precipitator was insufficient to retain trapped adult whiteflies. Successful application of the electric field screen enabled the management of whiteflies and other greenhouse pests (Kakutani et al, 2012a;Takikawa et al, 2016;Nonomura et al, 2012;Kakutani et al, 2017).…”

Section: Insect-capturing Function Of a Double-charged Dipolar Electrmentioning

confidence: 99%

A Promising Physical Pest-Control System Demonstrated in a Greenhouse Equipped With Simple Electrostatic Devices That Excluded All Insect Pests: A Review

Takikawa¹,

Kakutani²,

Matsuda³

et al. 2019

JAS

Self Cite

View full text Add to dashboard Cite

Applied electrostatic engineering can be used to construct greenhouses that prevent entry of insect pests. Two types of electric field screen were used to exclude pests from the greenhouse: single- and double-charged dipolar electric field screens (S- and D-screen, respectively). The S-screen consisted of iron insulated conductor wires (ICWs) arrayed in parallel (ICW-layer), a grounded metal net on either side of the ICW-layer, and a direct current voltage generator. S-screens were attached to the side windows of the greenhouse to repel whiteflies (Bemisia tabaci) that approached the nets. The D-screen was installed in a small anteroom at the greenhouse entrance to capture whiteflies entering through it. The ICW-layers of the D-screen were oppositely charged with equal voltages and arrayed alternately, and an insulator board or grounded metal net was placed on one side of the ICW-layer. The ICW-layers captured whiteflies entering the electric field of the double-charged dipolar electric field. Three screens equipped with yellow or gray boards or a grounded metal net were installed in the anteroom based on the airflow inside the room, as most whiteflies were brought in by air when the door was opened. Two D-screens with boards were useful for directing the airflow toward the wall with the netted D-screen. This screen eliminated the insects and the pest-free air was circulated inside the greenhouse. The D-screen with the yellow board attracted the whiteflies and was effective for trapping them when there was no wind. Our method kept the greenhouse pest-free throughout the entire period of tomato (Solanum lycopersicum) cultivation.

show abstract

An electric field strongly deters whiteflies from entering window-open greenhouses in an electrostatic insect exclusion strategy

Cited by 31 publications

References 17 publications

Prevention of Whitefly Entry from a Greenhouse Entrance by Furnishing an Airflow-Oriented Pre-Entrance Room Guarded with Electric Field Screens

Prevention of Whitefly Entry from a Greenhouse Entrance by Furnishing an Airflow-Oriented Pre-Entrance Room Guarded with Electric Field Screens

A Promising Physical Pest-Control System Demonstrated in a Greenhouse Equipped with Simple Electrostatic Devices that Excluded all Insect Pests

A Promising Physical Pest-Control System Demonstrated in a Greenhouse Equipped With Simple Electrostatic Devices That Excluded All Insect Pests: A Review

Contact Info

Product

Resources

About