The insect glue, produced from edible oils, was inspired by plants such as sundews that use the strategy to capture their prey. A key advantage of physical pesticides over toxic pesticides is that pests are highly unlikely to evolve resistance, as this would require them to develop much larger and stronger bodies, while bigger beneficial insects, like bees, are not trapped by the drops.
The drops were tested on the western flower thrip, which are known to attack more than 500 species of vegetable, fruit and ornamental crops. More than 60% of the thrips were captured within the two days of the test, and the drops remained sticky for weeks.
Work on the sticky pesticide is continuing, but Dr Thomas Kodger at Wageningen University & Research, in the Netherlands, who is part of the self defence project doing the work, said: “We hope it will have not nearly as disastrous side-effects on the local environment or on accidental poisonings of humans. And the alternatives are much worse, which are potential starvation due to crop loss or the overuse of chemical pesticides, which are a known hazard.”
“boy do I have thrips” triggered a funny memory.
When I worked in Ag. Research we had a big international field day. People from 50+ countries visiting in. I got the wonderful job of doing presentations in the field all day long. This was in late summer on a bad thrip year.
Well, one of the office goons decided that they would order all the staff polo shirts for the three day event. We were all supposed to wear the same color on the specified day.
They ordered in a light blue, yellow, and green polos. The first day was to be light blue. I “accidentally” wore the green one instead and had a few very irate office goons on my back first off that morning. Strangely enough all of the experienced outdoor staff “accidently” wore the green shirt as well.
For those that don’t know, thrips are highly attracted to light blue and they bite. I laughed my ass off most of the day.
The following two days everyone wore green. Except for the one determined office goon who wore the yellow shirt. In a field full of honeybee hives…