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

  • Bycatch has ‘shocking’ toll on British marine life, first-ever analysis reveals

    Conservationists say cherished creatures such as whales, dolphins and seabirds are being killed in large numbers by fishing tackle

    Thousands of Britain’s most charismatic and protected marine wildlife, including whales, porpoises, dolphins, seals and seabirds are being killed as “collateral damage” by fishing vessels every year, according to the first-ever analysis of bycatch data.

    The analysis, by the Wildlife and Countryside Link, a coalition of voluntary conservation groups, reveals the devastating toll bycatch, the accidental capture and killing of non-target species by fishing vessels, is having on marine species.

    Continue reading...

  • Toby Carvery to fund orchard replanting as settlement for felling ancient oak

    Enfield council in north London took legal action against restaurant chain after outrage over damage to tree

    The UK restaurant chain Toby Carvery has settled a legal dispute over taking a chainsaw to an ancient oak tree without permission, by agreeing to pay to restore a lost orchard.

    The unauthorised partial felling of the 500-year-old oak next to a Toby Carvery car park in Whitewebbs Park, Enfield, north London, in April last year, prompted widespread public outrage and questions in parliament.

    Continue reading...

  • Pollinators in peril: scientists reveal the hidden human health costs of the world’s disappearing bees

    Crops and flowers rely on them for survival, but wild bees are declining – and crucial nutrients will go missing from our diets as a result

    There are few ways in and out of Nepal’s Jumla district. The Karnali highway, considered one of the world’s most dangerous roads, provides the only land link, splicing through the Himalayas to connect Jumla’s terraced valleys to the rest of the country. As such, the 120,000 people that live there are almost entirely self-sufficient, with most of them eating and selling what they grow.

    It’s a tenuous existence, plagued by food insecurity and malnutrition. In recent years, local beekeepers have bemoaned languishing hives and dwindling honey production, observing that roughly half of their bees seem to have vanished over the past decade. These concerns, however, ignore an even more insidious impact.

    Continue reading...

  • Deepest and most extensive whale graveyard discovered in Indian Ocean

    Some remains found in Diamantina fracture zone date back more than 5m years and reveal species and ecosystems unknown to science

    The oldest, deepest and most extensive whale graveyard yet discovered has been found in the south-eastern Indian Ocean, with fossils dating back more than 5m years.

    Whale falls – the term for dead whales that sink to the ocean floor – are not uncommon, but most have been found at depths of less than 4km (2.5 miles). By contrast, the newly discovered necropolis reaches depths of more than 7km, and extends hundreds of miles across the sea floor.

    Continue reading...

  • The rightwing campaign to control how US judges view the climate crisis

    US energy secretary Chris Wright featured in seminars to judges when he was a fracking executive

    As cities and states sue big oil for billions in damages over allegations that it covered up the dangers of its products, rightwing organizations are attempting to discredit the wave of litigation. They claim the lawyers behind it are teaming up with an environmentally focused legal education non-profit to bias federal judges against oil companies.

    But it is actually fossil fuel-backed organizations that are attempting to sway the judiciary in their favor, one of those law firms is countering. Evidence of this includes judicial seminars hosted by one such group featuring pro-industry speakers such as the current energy secretary, Chris Wright, in his former occupation as a fracking executive.

    Continue reading...

  • Super-rich’s assets cause outsized amount of climate harm, study says

    Greenpeace calculates that wealthiest contribute nearly $1tn of damage a year with ownership-based emissions

    Ultra-wealthy people zooming across the world on their private jets, lounging on yachts and conspicuous by their Instagrammable consumption are among the most easily identified individual culprits when it comes to the climate crisis – but new research argues that it is not just their heady lifestyles to blame, but also their bank accounts.

    Through their ownership of companies and private financial and physical assets, from oil producers to property developments, the super-rich are responsible for an outsized slice of the greenhouse gases that are overheating the planet. The top 1% of people by wealth, through their shareholdings and investments, control about a quarter of global annual emissions in total.

    Continue reading...

  • More than half of clean energy schemes needed for Labour’s 2030 target offered grid connection

    The 700 projects include wind and solar farms, battery storage, gas and hydro plans

    More than half the renewable energy projects needed to meet the government’s clean power targets by 2030 are now able to plug into the electricity grid after years of delay, according to the system operator.

    The National Energy System Operator (Neso) has offered more than 700 clean energy projects in Great Britain a grid connection date since the start of the year, after a two-year process to unblock a bottleneck that threatened to delay projects into the 2030s.

    Continue reading...

  • ‘Every day it’s more barriers’: how the US is shutting out climate refugees

    As the US shuts its doors to most refugees, there’s little hope of a new system to help those forced from home by climate impacts

    Millions of people around the world are having their lives upended by floods, storms and heatwaves worsened by the climate crisis. Those forced to flee their home countries, however, are finding that the door to the US is more firmly shut than ever.

    Neither US nor international law recognizes environmental hazards, such as climate-related displacement, as a valid cause to claim asylum or gain entry through other migration pathways, despite the mounting toll of disasters caused by an overheating planet.

    Continue reading...

  • This LA neighborhood is choked by smog. The solution: a network of sensors on offices, homes and bags

    Pacoima is hemmed in by highways and heavy industry, and its residents are fighting pollution with hyperlocal air quality monitoring

    Jose Luis Salas looks up at the ladder. “Are you ready?” he asks Shance Taylor, an environmental project manager who’s holding a white container, about the size of a shoebox, covered with wires and numbers.

    Taylor nods and climbs up to reach the side of Salas’s tidy house in Pacoima, a neighborhood in Los Angeles’s north-east San Fernando valley. The curious box in their hands is known as Aeroqual sensor – part of a community air-quality monitoring program run by Pacoima Beautiful, a local environmental group.

    Continue reading...

  • The Galápagos is a wildlife haven. But is that enough to protect the rare scalloped hammerhead shark?

    The species is abundant within the protected archipelago but when they migrate outside the marine reserve to give birth they run the gauntlet of industrial fishing

    The unmistakable fluted T-shape of a scalloped hammerhead shark slides by, followed by a diver holding his breath and a metal spear like an extra-long snooker cue. The spear hits the fish behind its dorsal fin and the 2-metre shark darts away, disgruntled but otherwise unharmed.

    Carlos Robalino, a marine biologist from the Galápagos Islands, trained as a shark researcher in Mexico but is now back home and working as a junior researcher at the Charles Darwin Foundation. When we meet in March, he is one of the divers on the foundation’s research expedition to Darwin and Wolf, the most northerly islands in the Galápagos marine reserve.

    Continue reading...

Novosti: Cybermed.hr

Novosti: Biologija.com

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