Eco Hvar

Kemijski pesticidi: da li su potrebni?

Postoje li alternative kemijskim pesticidima? Da, naravno.

Leptir i sinerarija Leptir i sinerarija Foto: Vivian Grisogono

U poljoprivredi mogu biti pesticidi istisnuti na razne načine kroz prirodnija sredstva za suzbijanje neželjenih biljaka, biljnih bolesti i insekata. Postoje razne metode za kontrolu insekata, uključujući i jedan patentiran u 2006. godini, koji koristi gljive u zaštiti usjeva od insekata. Hvar ima bogatstvo biljaka, koje se mogu pripremiti kako bi se mogli iskoristiti za ekološku poljoprivredu. Ne zaboravljajući, da je tradicionalna metoda suzbijanja korova u vinogradima bila sadnja graha između vinove loze. Dakle, umjesto grožđa isprepletenog opasnim herbicidima, vlasnik je dobivao dva čista zdrava usjeva. Ovce su uvijek dobro obavljali svoj zadatak, da održavaju maslinike bez korova. Ekološka poljoprivreda uključuje pošten fizički rad, kao i razumijevanje toga, kako biljke rastu i u kakvoj su interaciji sa okolišem. Ekološke metode su u konačnici znatno jeftinije od kemikalija.

Košenje korova. Foto: Vivian Grisogono

Kada sam preuzela svoja vlastita polja prije desetak godina, onih nekoliko stabala – četiri masline, dvije smokve, jedno jadno stablo badema – bili su poprilično ugušeni nekontroliranim, divljim raslinjem (ok, korovom za neke) starim nekoliko godina. Polja su pokošena i prekopana dva puta kako bi se vratio red. Ručno čupanje korova i košenje je od tada uvijek bilo dovoljno za održavanje takvog reda. Nikada nisam koristila pesticide ili umjetna gnojiva. Neka područja su ostavljena tako ‘divlja‘. Koje su prednosti? Mogu sigurno jesti svo bilje, koje nikne iz zemlje, kao i plodove stabala. Jako se veselim kada se pojave moje omiljene divlje biljke, aromatično bilje, komorač ili moja orhideja.

Tragopogon, prekrasna divlja biljka. Foto: Vivian Grisogono

Postoji čak i raznoliko životinjsko carstvo, fazani, fascinantni insekti i tragovi drugih zanimljivih bića. Moja stabla proizvode zadovoljavajuće rezultate, savršene za moje potrebe. U 2016. godini su moje masline imali lijepih 15% prinosa, moj najbolji prinos do sada. 

Ekološki uzgoj, zaštita od korova uz pomoć folije. Foto: Vivian Grisogono

Komercijalni poljoprivrednici obično tvrde, da im pesticidi štede vrijeme. To je vrlo sporno. Kemijski pesticidi nisu efikasni, osim kratkoročno. U svakom slučaju, postoji stalna i sve veća potražnja za organski uzgojenom hranom, kako potrošači postaju svjesni zdravstvenih pogodnosti takve hrane. Hrvatska ekološka poljoprivreda je žalosno mali sektor, ali uz postojanje sve većeg broja ljudi, koji su spremni kupovati organski uzgojenu hranu, i ovaj sektor je u porastu. Turisti na Hvaru očekuju, da će pronaći svježe organske proizvode. Njihovo razočaranje je štetno, ne samo financijski. U svakom pogledu, isplati se uzgajati organski.

Što se tiče komaraca, postoje li bolje načine nego prskanje insekticidima? Prirodno! Nije to tako davno, kada nikakvi tigrasti komarci nisu postojali, ali bilo je dovoljno šišmiša, koji su jeli doslovno stotine komaraca kad god bi imali priliku. Ako bi smo uspjeli opet stvoriti uvjete za šišmiše i druge predatore za komarce, bio bi to veliki napredak.

© Vivian Grisogono MA(Oxon), 2016.

Prijevod Ivana Župan

Video sadržaj

na vrh članka
Nalazite se ovdje: Home zanimljivosti Opasni otrovi! Kemijski pesticidi: da li su potrebni?

Eco Environment News feeds

  • ‘At a crossroads’: will piling-up crises force Europe to put brakes on SUV culture?

    Bigger cars including electric can cause multiple harms, yet resistance to rise of US-style vehicles has had mixed support

    On a brisk winter’s evening in Europe’s automotive heartland, a cyclist who had pushed for safer streets went out on his bike for a final time. Andreas Mandalka had documented dangerous driving and shoddy cycling infrastructure for years, measuring the margins at which cars zipped past him and posting videos of blatant violations. While quick to remind readers that only a small proportion of drivers behaved badly, the 44-year-old blogger in Baden-Württemberg, Germany, had grown frustrated with authorities for failing to act. He felt they viewed him as a nuisance.

    As he cycled down a straight stretch of renovated road that runs parallel to a forest path he had flagged for poor quality, lights bright on his bike and helmet firm on his head, he was fatally struck from behind by a car.

    Continue reading...

  • Shark or sea monster? The Canadian marine mystery that still intrigues experts 90 years on

    Debate continues to rage over whether a strange carcass found in 1937 was a new species or a basking shark. Either way, the case reveals how little is known about what lies beneath the waves

    Its head resembled a dog’s, its downturned nose a camel’s, and at the end of its reptilian body was the tail of a horse. Witnesses say it was covered in a thin white film. When the remains of a strange creature were pulled from the stomach of a sperm whale, most of those present agreed: it was a sea monster – or at least something unknown living in the depths off Canada’s west coast.

    Crews at the whaling station in the archipelago of Haida Gwaii assembled a platform of wooden boxes and laid out the 3-metre (10ft) carcass, using a white sheet to display the curiosity that had baffled veteran whalers.

    Continue reading...

  • Climate campaigners attack Shell over ‘windfall’ profits from Iran war

    Firm benefits from conflict to rake in $6.9bn as higher energy prices turbocharge profits

    Shell has reported better than expected profits of $6.9bn (£5bn) after its oil traders reaped the benefits of soaring energy prices during the war in Iran, angering climate campaigners.

    Europe’s biggest oil and gas company posted a 115% jump in first-quarter profits from the $3.2bn reported in the last three months of 2025.

    Continue reading...

  • ‘Climate solutions will bring down bills and restore nature’: green issues and May elections

    As Reform vows to block solar and windfarms, energy leaders say renewables offer most secure future, insulating UK from hostile forces

    • May elections: What’s at stake across England, Wales and Scotland?

    The defining issue of Thursday’s local elections, feedback from doorsteps suggests, will be the UK’s soaring cost of living. But voters should be told about the links between inflation and the effects of fossil fuels and the climate crisis – or the remedies they choose – may make the situation worse, green campaigners have warned.

    Ami McCarthy, the head of politics at Greenpeace UK, said: “With people’s bills and prices soaring from yet another fossil fuel crisis, these local elections have a global context – driven by the Iran war.

    Continue reading...

  • Norwegian government attacked over decision to reopen North Sea gasfields

    Approval for exploration in 70 new areas prompts fierce backlash from fossil fuel opponents

    The Norwegian government has been heavily criticised for approving plans to reopen three North Sea gasfields nearly three decades after they were closed to help fill the gap in energy supplies created by the Middle East war.

    Amid sharp price rises in oil and gas since the US and Israel’s attack on Iran in February, Oslo has also given its approval for oil and gas companies to explore in 70 new locations in the North Sea, Barents Sea and Norwegian Sea.

    Continue reading...

  • Rewilding giants: captive elephants rehomed in Europe’s first sanctuary

    Julie, once a circus elephant, and Kariba, from a Belgian zoo, are to be moved to a former ranch in Portugal

    Europe’s first large-scale elephant sanctuary, which is opening to offer a more natural environment for some of the 600 animals still held in captivity across the continent, is to receive its first arrivals.

    Julie, Portugal’s last circus elephant, will be moved next month to the animal charity Pangea’s multimillion pound sanctuary in the Alentejo, 200km (124 miles) east of Lisbon, close to the border with Spain.

    Continue reading...

  • Fertiliser shortages to have dramatic effect on food prices, says Duke of Westminster’s firm

    Powerful property and farming firm Grosvenor Group says knock-on effect of Iran war could arrive next year

    Fertiliser shortages caused by the Iran war have driven up costs for UK farmers by up to 70% and will have a “dramatic” impact on food prices globally next year, according to one of Britain’s most powerful property and farming companies.

    Mark Preston, executive trustee of the 349-year-old Grosvenor Group, controlled by the Duke of Westminster, said fertiliser “was already quite expensive” before the 50% to 70% surge in prices since the start of the Iran war in late February.

    Continue reading...

  • ‘An epidemic of flies, rats, waste and foul odours’: health fears in Cuba as US oil blockade halts rubbish collection

    As Trump ramps up pressure by cutting off fuel to the island, Havana’s refuse is rarely collected, forcing residents to burn it in the streets despite the pollution

    As thick smoke spread through the narrow streets of Havana, seeping into homes, schools and shops, Carlos Blanco, a chef, opened his bedroom window to see what was going on. “I saw a mist. But it wasn’t mist – it was smoke,” he says, describing the toxic smog emanating from a smouldering mountain of rubbish.

    As the US oil blockade on Cuba enters its fourth month, choking off most of the island’s fuel supplies, growing mounds of waste lie on street corners across Havana. Amid fuel scarcity, authorities have opted to ration petrol by reducing waste collection, leaving less than half of Havana’s rubbish trucks operational.

    Continue reading...

  • Up to 2cm a month: Nasa keeps track as Mexico City sinks into the ground

    Powerful radar system is providing new data on city’s subsidence, which experts hope will draw more attention to it

    Walking into Mexico City’s sprawling central Zócalo is a dizzying experience. At one end of the plaza, the capital’s cathedral, with its soaring spires, slumps in one direction. An attached church, known as the Metropolitan Sanctuary, tilts in the other. The nearby National Palace also seems off-kilter.

    The teetering of many of the capital’s historic buildings is the most visible sign of a phenomenon that has been ongoing for more than a century: Mexico City is sinking at an alarming rate.

    Continue reading...

  • 100 years on Earth: celebrating David Attenborough’s birthday – podcast

    To celebrate Sir David Attenborough’s centenary, Madeleine Finlay catches up with natural history writer Patrick Barkham, who has met the celebrated presenter. They explore how the natural world has changed in the century that Attenborough has been on Earth, and how his programming has reflected his growing commitment to highlighting the devastating impacts of the climate crisis on nature and biodiversity

    Clips: BBC, PBS

    Support the Guardian: theguardian.com/sciencepod

    Continue reading...

Novosti: Cybermed.hr

Novosti: Biologija.com

Izvor nije pronađen
Copyright © 2026 Eco Hvar. Sva prava zadržana. Developed by Orion Informatika.