Scientists employ sex in war on aphids

THE SCENT of a female aphid could bring relief to rose growers wary of chemical pesticides, according to scientists working on the latest in gardening technology, writes Susan Watts.

Chemists are enlisting sex pheromones to distract male aphids, entrap them and infect them with a fatal fungus. Scientists have identified and manufactured versions of the sexy smells of several aphids - mainly those that attack commercial crops. Now they are coming to the aid of the domestic gardener.

'We should have tracked down the first rose aphid pheromone by the end of the year,' Professor John Pickett, from the Agricultural and Food Research Council's Rothamsted experimental centre in Hertfordshire, said yesterday at the annual Chemical Congress of the Royal Society of Chemistry, Southampton.

The idea is to hit the aphids when they are most vulnerable. Rose aphids spend most of their time on herbaceous plants, where can they reproduce asexually. But they only reproduce with a partner on the woody rose tree. 'That's the stage when you can divert the males,' he said.

The research is still at an early stage, although he anticipates a product will be available in three to four years time.

Professor Pickett's approach seeks a benign way to control pests, although he pointed out that biological pest control can be frightening. Another speaker at the congress talked about the use of tiny worms to control slugs. The worm infects the slug with a bacterium that multiplies until the slug explodes.

'It can be really quite unpleasant, this biological control stuff,' Rose Ward from the Consumers' Association, said.

Start your day with The Independent, sign up for daily news emails
Have you tried new the Independent Digital Edition apps?
ebooks
ebooksA special investigation by Andy McSmith
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
Independent Dating
and  

By clicking 'Search' you
are agreeing to our
Terms of Use.

iJobs Job Widget
iJobs General

Recruitment Genius: Digital Trade Advisers - Yorkshire and Humber

£29500 - £30000 per annum: Recruitment Genius: This company in Yorkshire and t...

Recruitment Genius: Project and Resource Manager

Negotiable: Recruitment Genius: This fast growing experience-led technology co...

Recruitment Genius: Production Scientist

£23000 - £25000 per annum: Recruitment Genius: This company specialises in the...

Recruitment Genius: Factory Manager - Food

£45000 - £50000 per annum: Recruitment Genius: This is an excellent opportunit...

Day In a Page

Homeless Veterans campaign: Donations hit record-breaking £1m target after £300,000 gift from Lloyds Bank

Homeless Veterans campaign

Donations hit record-breaking £1m target after huge gift from Lloyds Bank
Flight MH370 a year on: Lost without a trace – but the search goes on

Lost without a trace

But, a year on, the search continues for Flight MH370
Germany's spymasters left red-faced after thieves break into brand new secret service HQ and steal taps

Germany's spy HQ springs a leak

Thieves break into new €1.5bn complex... to steal taps
International Women's Day 2015: Celebrating the whirlwind wit of Simone de Beauvoir

Whirlwind wit of Simone de Beauvoir

Simone de Beauvoir's seminal feminist polemic, 'The Second Sex', has been published in short-form for International Women's Day
Mark Zuckerberg’s hiring policy might suit him – but it wouldn’t work for me

Mark Zuckerberg’s hiring policy might suit him – but it wouldn’t work for me

Why would I want to employ someone I’d be happy to have as my boss, asks Simon Kelner
Confessions of a planespotter: With three Britons under arrest in the UAE, the perils have never been more apparent

Confessions of a planespotter

With three Britons under arrest in the UAE, the perils have never been more apparent. Sam Masters explains the appeal
Russia's gulag museum 'makes no mention' of Stalin's atrocities

Russia's gulag museum

Ministry of Culture-run site 'makes no mention' of Stalin's atrocities
The big fresh food con: Alarming truth behind the chocolate muffin that won't decay

The big fresh food con

Joanna Blythman reveals the alarming truth behind the chocolate muffin that won't decay
Virginia Ironside was my landlady: What is it like to live with an agony aunt on call 24/7?

Virginia Ironside was my landlady

Tim Willis reveals what it's like to live with an agony aunt on call 24/7
Paris Fashion Week 2015: The wit and wisdom of Manish Arora's exercise in high camp

Paris Fashion Week 2015

The wit and wisdom of Manish Arora's exercise in high camp
8 best workout DVDs

8 best workout DVDs

If your 'New Year new you' regime hasn’t lasted beyond February, why not try working out from home?
Paul Scholes column: I don't believe Jonny Evans was spitting at Papiss Cissé. It was a reflex. But what the Newcastle striker did next was horrible

Paul Scholes column

I don't believe Evans was spitting at Cissé. It was a reflex. But what the Newcastle striker did next was horrible
Miguel Layun interview: From the Azteca to Vicarage Road with a million followers

From the Azteca to Vicarage Road with a million followers

Miguel Layun is a star in Mexico where he was criticised for leaving to join Watford. But he says he sees the bigger picture
Frank Warren column: Amir Khan ready to meet winner of Floyd Mayweather v Manny Pacquiao

Khan ready to meet winner of Mayweather v Pacquiao

The Bolton fighter is unlikely to take on Kell Brook with two superstar opponents on the horizon, says Frank Warren
War with Isis: Iraq's government fights to win back Tikrit from militants - but then what?

Baghdad fights to win back Tikrit from Isis – but then what?

Patrick Cockburn reports from Kirkuk on a conflict which sectarianism has made intractable