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Pheromones in agriculture

Pheromones in agriculture


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Pheromones, do they work?The effects on humans and insects. From pheromone perfumes (for men) to pheromone traps (for use in agriculture). Here's everything you need to know about these substances, where to find them and how they work. Biological fight with sexual pheromones.

We often hear aboutsex pheromones, the question arises:they work? If we talk about afermoni perfume and its effects on humans, the answer is "no", if we talk aboutsex pheromonesused in agriculture, yes,they work.

What are pheromones and how they work

THEpheromonesthey are substances produced by all living organisms, even if the ability of man to produce these chemicals has never been demonstrated. To secrete isex pheromones they are particular glands. THEpheromonesare emitted at low concentrations e they workas asilent signal.

THEsex pheromones, if they are not used by man, they are widely used byinsects. Talking about pheromones, however, is very generic. These are divided into four classes based on the reaction they trigger:

  • Tracer pheromones
    They are released by an individual so that species of the opposite sex canfollow them.
  • Alarm
    Produced in dangerous conditions, they are used to "alert" the specimens of the same species.
  • Unleashing
    They trigger behavioral or physiological changes.
  • Liberating pheromones
    These too trigger behaviors, but in a targeted way, they induce mating or aggression in the individuals who capture them. The term "sexual fermones" refers to liberating pheromones.

How do sex pheromones work? Virgo females, with special glands, produce these substances which, released into the air, are picked up (up to over 7.5 km away!) By males of the same species.

Synthetic pheromones

When it comes topheromone perfumesyou are referring to a product that has noeffect on humans. The reason? If it has not been shown that humans are able to produce pheromones, how was it possible to artificially synthesize them? If you DON'T have an original, how can you make a copy ?!

On the contrary, when it comes toinsect pheromones, the agricultural industry has managed tosuccessfully synthesize artificial pheromones.

Pheromones in agriculture

Many pheromone-based agricultural products arecrop protection products and for the purchase it is necessary to have alicenseHow does it work?The synthetic pheromone is emitted into the environment in high quantities. The synthetic type pheromone emitted by the female is used.

The males, due to the excessive signals, are no longer able to locate the females and thus mating is prevented. It is for this reason that we speak ofbiological fight with pheromone traps.

Pheromone traps: where to buy them?

For substances for agricultural use, you will have to contact the agricultural consortia specialized in the sale of crop protection products. For home use traps, you can turn togarden centerspecialize or take advantage of online trading. To untangle the various proposals, we refer you to: this Amazon page.

Remember that each sachet is airtight sealed and that, once opened, it must be used for the period indicated on the package. Usually, the pheromone baits they must be replaced every 4 or 6 weeks. The bait must be replaced every month - month and a half, while the trap (better defineddiffuser) must never be replaced, but must be collected and cleaned at the end of the season and then reused the following year.

For thebiological struggleagricultural, generally a more widespread diffusion is used with:

  • Aerosol
  • Spray formulations
  • Dispenser type dispensers

The sexual confusion induced bypheromonesit has been demonstrated in a good number of parasitic species.

Biological fight with pheromones

Which are the species that can be eliminated with the biological control based on pheromones in agriculture?

  • Anarsia lineatella (Anarsia)
  • Cydia pomonella (Carpocapsa)
  • C. funebrana (Cidia del plino)
  • Planococcus ficus (mealy cochineal of the vine)
  • Adoxophyes orana (Embroiderers parasites)
  • Pandemis (various parasites)
  • Archis podanus
  • Argyrotaenia lijungiana
  • Zeuzera pyrina (yellow rodilegno)
  • Synanthedon tipuliformis (currant sesia)
  • Eupoecilia ambiguella (vine moth)
  • Cydia molesta (peach moth)
  • Lobesia botrana (vine moth)


Video: How to installation of sex pheromones traps (May 2022).