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

  • ‘The Antarctic is the last frontier’: the quest to save Shackleton’s Endurance

    Amid fears the wreck will be more accessible to explorers – and new species – as the climate warms, conservationists want to create the region’s first underwater protected area

    The harsh temperatures, treacherous currents and shifting pack ice of the Antarctic’s Weddell Sea, which crushed and sank his ship, Endurance, in 1915, led Ernest Shackleton to describe it as the “worst portion of the worst sea in the world”.

    For more than a century, the inhospitable conditions, which present a challenge even for modern icebreaker ships, helped to protect the lost wreck, which was discovered in 2022, its structure still largely intact.

    Continue reading...

  • ‘People start connecting the dots’: why an investment fund is rewilding a North Yorkshire estate

    Rebalance Earth is investing in Broughton Sanctuary to generate financial, environmental and social returns

    From a high point on the hill, the North Yorkshire landscape unrolls below. The moorland above gives way to grassland, trees and then pasture, divided by the region’s traditional dry stone walls.

    The view may be idyllic, but it belies the condition of parts of this land, belonging to the sprawling 1,100 hectare (2,500-acre) Broughton Sanctuary estate, near Skipton.

    Continue reading...

  • Weather tracker: Saharan heat to send temperatures soaring across Europe

    Heatwave conditions build over much of continent, while mild start to winter continues in parts of Australia

    Hot weather is expected across Europe this week as heatwave conditions build over large swathes of the continent.

    A mass of hot air from the Sahara has settled over the Iberian peninsula and spread into southern and western France, pushing temperatures widely into the low- and mid-30s celsius.

    Continue reading...

  • Jamaican beach access campaigners go to court to fight privatisation of coast

    Activists are challenging colonial-era law and demanding ‘free, legal, unfettered, forever rights’ to use beaches

    Campaigners in Jamaica are heading to court next week to try to prevent the government from cutting off access to more of their beaches.

    They argue that ceding their shorelines to big hotel chains enriches private investors and benefits tourists and outsiders while depriving Jamaicans who depend on the sea for their livelihoods, leisure and health.

    Continue reading...

  • Country diary: Our island’s wandering wallabies come at a cost | Tim Earl

    Ballaugh, Isle of Man: As I discover, spotting one of these marsupials isn’t hard. The problem is how to manage them

    Walking through Ballaugh Curraghs, a marshland in the north of the island, I’m taking part in a favourite island pastime: spotting red-necked wallabies. Creeping through the stands of willows, I soon see a grey shape with beady eyes and pricked up ears watching me, unafraid. Another appears and I check for the ultimate sighting … a joey poking out from a pouch, but without success. It’s a rare sight even here.

    These marsupials have changed this area beyond recognition. They arrived in the 1960s after a few escaped from a nearby wildlife park, and even by 2006 their footprint was light enough that the “curraghs” were declared a wetland site of international importance. Today, though, it would struggle to qualify, as so many key species have been eaten or disturbed by the 800 or so wallabies that now dominate.

    Continue reading...

  • ‘Fast-track’ regulation could expose Britons to harmful chemicals, say campaigners

    Exclusive: Fighting Dirty taking legal action against government over proposal it says could import weaker standards

    An environmental campaign group is taking legal action against the government over proposals that it claims could fast-track chemical hazard classifications from other countries with lower standards into UK law.

    Fighting Dirty claims proposals to change the classification and labelling of potentially hazardous chemicals could result in the UK weakening standards on cancer-causing substances.

    Continue reading...

  • Trees may store less planet-heating carbon than hoped, study suggests

    Photosynthesis does not always result in wood growth, a key factor in carbon dioxide sequestration

    Trees may not be able to store as much planet-heating carbon as hoped, a study suggests, with researchers finding photosynthesis does not always lead to wood growth.

    Scientists studied 137 sites across the US and found trees stopped growing months before the point in the year at which photosynthesis stopped.

    Continue reading...

  • Jamaica’s beach access crisis: ‘We shouldn’t be forced to fight for what is already ours’

    Activists argue business model is ‘plantation tourism’ designed to benefit elite and disadvantage most Jamaicans

    Devon Taylor remembers when the Mammee Bay shoreline in St Ann, Jamaica, was filled with children frolicking in the ocean after school, fishers haggling with locals over the price of their daily catch and craft vendors carving souvenirs under almond trees.

    “I grew up on Mammee Bay,” Taylor says. He recalls fetching seawater in bottles for his grandmother when she was no longer able to go to the beach, learning to swim in the shallows, and watching generations of fishers cast their nets. “That beach raised us. It fed us.”

    Continue reading...

  • ‘It’s going to be extremely hot’: workers imperiled as sweltering World Cup temperatures are forecast

    It could top 90F in several cities hosting World Cup games – and workers could pay the price with their health

    As the World Cup kicks off, labor advocates and scholars warn that the workers making the tournament possible could face serious heat-related risks.

    “It’s going to be extremely hot, and you just cannot leave people unprotected or you’re going to deal with a lot of injuries,” said Jonathan Alingu, co-executive director of Central Florida Jobs With Justice, which has been calling for worker protections at the Miami games. “Or, God forbid, something even worse.”

    Continue reading...

  • Illegal dump becomes ‘symbol of north-south divide’ at heart of Makerfield byelection

    Failure to clear up rotting, rat-infested site is a key issue for local people as they weigh up politicians’ promises

    A mountain of rubbish sits behind a metal fence in the village of Bickershaw, where it has remained for more than 20 months. For many residents, it is a physical manifestation of the north-south divide as well as a rotting, rat-infested symbol of a broken system in which organised criminal gangs make millions while communities endure the toxic impact of their trade.

    The 25,000 tonnes of household and trade rubbish is one of the largest toxic waste dumps in the country. Unlike many illegal dumps that appear in woodlands, by rivers and on farmland, this one is in the heart of a residential street, right next to a primary school.

    Continue reading...

Novosti: Cybermed.hr

Novosti: Biologija.com

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