The entomological glue, an alternative method to the fight with insecticides against the black aphid of the cherry tree

  • Published source details Pérez J.A., García T., Arias A. & Martínez de Velasco D. (1995) La cola entomologica, un metodo alternativo a la lucha con insecticidas contra el pulgon negro del cerezo (Myzus cerasi F.). Boletin de Sanidad Vegetal, Plagas, 21, 213-222.


This study is summarised as evidence for the following.

Action Category

Exclude ants that protect pests

Action Link
Natural Pest Control
  1. Exclude ants that protect pests

    A randomised, replicated, controlled study in 1993 in Extremadura, Spain (Perez et al. 1995) found more natural predators on cherry Prunus sp. trees with ant-excluding glue (averaging 466-827 predators/100,000 aphids) than on trees treated with insecticide (42-238 predators) in June-July, and more than on untreated trees (94 predators/100,000 aphids) in June. Numbers were similar between treatments on other dates. Predators included ladybirds (Coccinellidae), flies (Chamaemyiidae and Syrphidae) and lacewings (Chrysopa sp.). Fewer aphids (Aphidoidea) occurred on trees with glue barriers (2,799-78,517 aphids/tree) and insecticide treatments (27-28,487 aphids) than on untreated trees (61,470-269,310 aphids) in May-July. Damage to foliage in October was similar in trees with glue barriers (249 shoots affected/tree), a March insecticide treatment (138 shoots) and no treatment (415 shoots), but an April insecticide treatment resulted in less damage (87 shoots). Glue barriers reduced ant (Formicidae) numbers vs. untreated and insecticide-treated trees (0-1 vs. 4-24 ants) in May-June but numbers later became similar when ants gained access to canopies via weeds and farm tools. Four treatments were replicated four times (one tree/treatment/replicate): glue applied around tree trunks, pirimicarb application (100 g/Hl) to tree canopies in March, pirimicarb application in April, and an untreated control.

Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust