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 opasni otrovi Kemijski pesticidi: da li su potrebni?

Eco Environment News feeds

  • UN backs historic climate crisis ruling, despite US attempts to stop resolution

    The US, Russia, Iran and Saudi Arabia – some of the highest oil-producing nations and major greenhouse gas emitters – opposed the measure

    The UN has voted 141-8 to adopt a resolution backing a world court opinion that countries have a legal obligation to address climate change, with the US – which is the world’s biggest historical emitter – among the small group opposing it.

    The UN secretary general, António Guterres, said Wednesday’s general assembly vote, in which 28 countries abstained, underscored that governments are responsible for protecting citizens from the “escalating climate crisis”.

    Continue reading...

  • More than 40 arrests made after UK activists target ‘bee-killing’ pesticides

    Environmental activists lock themselves to pesticide barrels in protest outside Syngenta headquarters

    More than 40 people, including Greenpeace UK’s programme director, Amy Cameron, have been arrested after a protest outside pesticide company Syngenta’s Yorkshire headquarters.

    A number of the activists locked themselves on to 15 blue pesticide barrels outside the headquarters, blocking the gates and leading to the temporary closure of the local A62. Activists had transformed a roundabout outside the front entrance into a giant hazard symbol carrying the message “Syngenta poisons nature” with an arrow pointing directly at the building. The action took place on World Bee day.

    Continue reading...

  • Plastic food and drink packaging ‘world’s most common coastal litter’

    Global study finds wrappers, bottles and lids on shorelines of 93% of countries analysed as UN talks to tackle issue in turmoil

    Plastic food wrappers, bottles, lids and caps are by far the most common items of litter found on the world’s shorelines, a study has found.

    Researchers looked at data from more than 5,300 surveys of coastal litter to produce the first global analysis of its kind. They found the data in 355 existing studies on the subject.

    Continue reading...

  • UK ‘built for climate that no longer exists’ and needs urgent changes to survive global heating, report warns

    Landmark report calls for widespread air conditioning and says UK temperatures forecast to exceed 40C by 2050

    British homes will need air conditioning to survive predicted levels of global heating, the government’s climate advisers have warned in a report, as measures such as drawing curtains, opening windows and growing trees for shade are not likely to be enough.

    Air conditioning should be installed in all care homes and hospitals within the next 10 years, and in all schools within 25 years, according to the Climate Change Committee (CCC), which published a major report on adapting to the impacts of global heating on Wednesday.

    Continue reading...

  • The English community that brought its river back from the brink: ‘If we can get it right here, we can do it everywhere’

    For 150 years, the Mease had been altered by human hands, which destroyed habitats. But in 2013, a restoration project began – and now its wetlands are abuzz with wildlife

    ‘A noisy river is a healthy river,” says Ruth Needham of the Trent Rivers Trust (TRT). The Mease in the Midlands must be in fine fettle, then, as it gurgles merrily along. Sunlight glints off riffles in the water and shoals of fry dart past. Needham whips out her phone to video the tiny fish: “My colleagues will be jumping for joy to see them!”

    Needham has good reason to be buoyant. Last month, the Mease won the UK River prize 2026 – which was established by the River Restoration Centre in 2014 to acknowledge innovative projects –in recognition of the trust’s 13-year restoration campaign. “The prize has been a massive boost,” says Needham. “If we can get the Mease into better condition, we can improve other rivers, too.”

    ‘We wanted to get people to work together’ … Ruth Needham of the Trent Rivers Trust

    Continue reading...

  • Blinded and broken, Sunny the owl becomes another casualty of Russia’s war

    Ukrainians lament appalling toll of fighting on their country’s bird population

    Russia sent kamikaze drones to attack the Ukrainian city of Zaporizhzhia in February. They hit buildings and killed several people. One unreported victim of the bombardment was a male long-eared owl, blinded in one eye and found with a badly broken wing. A passerby scooped up the stunned bird, put him in a box and took him to the city of Dnipro.

    The owl – nicknamed Sunny – is now recovering in a cosy room belonging to Veronica Konkova. No longer able to fly or hunt, Sunny instead hops around.

    Continue reading...

  • Rachel Reeves to protect ‘critical’ clean energy projects from legal challenges

    Chancellor’s planning shake-up in England and Wales would ‘reduce exposure from judicial review on all but human rights grounds’

    Rachel Reeves is poised to fast-track clean energy projects in England and Wales with planning reforms to curb the use of judicial reviews against new infrastructure, the ​Treasury has said.

    Under the chancellor’s proposals, parliament will be able to designate and approve the most important clean energy projects as of “critical national importance”, as part of a wider package seeking to boost the UK’s energy security and soften the economic fallout from the Iran war.

    Continue reading...

  • On the trail with the hunters who believe shooting big game can save Africa’s wildlife – podcast

    One way to pay for wildlife conservation is to allow the rich to bag a few animals for high prices. But critics see this approach as an exercise in neocolonialism

    Written and read by Cal Flyn

    Continue reading...

  • ‘It’s put the joy levels up’: the flood-prone London school with a climate-adapted playground

    When pupils could no longer play outside, St John’s school in Barnet decided to act, enlisting Trees for Cities to help rethink its outside space

    The play area at St John’s Church of England primary in Barnet, north London, used to flood so severely it was often unusable. “It would get so bad that the children couldn’t be dismissed from the playground,” says Macci Dobie, the school’s headteacher. “We had to dismiss them from different parts of the school or, literally, parents were stepping into puddles to lift their children out of the classroom.”

    Because the school sits in a basin with clay foundations, rain would pool on the grey tarmac and just sit there, often denying the children a proper break for play outside.

    Continue reading...

  • Colombia’s climate crossroads: Trumpism casts shadow over presidential battle

    Colombia is a global leader in climate activism. Could US influence drag country to a future of mining and fracking?

    Several hours after dark in a quiet Caribbean neighbourhood, a cluster of environmental activists gather on plastic chairs between a mango tree and a courtyard wall emblazoned with the words “Colombia, respira!” (Breathe, Colombia).

    So many people have turned up that some have to stand. That is because tonight’s speaker is Susana Muhamad, one of the most admired socio-environmental campaigners in the world, and this is a moment of profound historical significance.

    Continue reading...

Novosti: Cybermed.hr

Novosti: Biologija.com

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