Can we do without chemical pesticides?

Are there alternatives to using chemical pesticides? Yes, of course.

Butterfly with cineraria Butterfly with cineraria Photo: Vivian Grisogono

In agriculture, chemical pesticides can be supplanted in various ways by more natural means of controlling unwanted plants, plant illnesses and insects. There are various methods for insect control, including one patented in 2006 which uses fungi to deflect insects from damaging crops (see the video below by Paul Stamets). Hvar has a wealth of plants which can be made into preparations used for organic agriculture. Not forgetting that the traditional method of controlling weeds in the vineyards was to plant beans in between the vines. So instead of grapes laced with hazardous herbicides, the producer finished up with two clean healthy crops. Sheep have always done a good job in keeping olive groves free of weeds. Organic agriculture does involve detailed manual work as well as an understanding of how plants grow and how they interact with their environment. The organic methods are ultimately much cheaper than chemicals.

Strimming for weed control. Photo: Vivian Grisogono

When I took on my own fields some ten years ago, the few trees - four olives, two figs, one sorry-looking almond - were well smothered among uncontrolled wild growth (ok weeds to most people) dating back several years. The fields were strimmed and rotavated twice to restore some order. Hand-weeding and strimming have kept unwanted growth at bay ever since. I have never used pesticides or artificial fertilizer. A couple of areas are left 'wild'. What are the benefits? I can safely eat whatever herbs spring up from the ground, as well as the fruits of the trees. I have rare joy when my favourite wild plants appear, whether aromatic herbs, fennel, tragopogons or my single solitary orchid.

Tragopogon, a favourite wild flower. Photo: Vivian Grisogono

There is also wildlife, with pheasants, fascinating insects and traces of other interesting creatures. My trees produce satisfying results, perfect for my needs. In 2016, my olives produced a fine 15% yield, my best yet.

Organic farming, weed control using sheeting. Photo: Vivian Grisogono

Commercial farmers usually argue that chemical pesticides save them time. That's debatable. Chemical pesticides do not work, except in the short-term. In any case, there is a constant and ever-growing demand for organic produce, as consumers become more aware of its health benefits. Croatia's organic farming sector is pitifully small, but growing steadily, with eager customers ready to buy! Tourists on Hvar expect to find fresh organic produce. Their disappointment is damaging, not least financially. From every point of view, it is worth the farmers' while to go organic.

As for mosquitoes, are there better ways of dealing with them than blanket spraying of insecticides? Naturally! It's not so long ago that there were no pesky tiger mosquitoes, but plenty of bats, who will eat literally hundreds of mosquitoes given half a chance. Recreating the conditions for bats and other natural mosquito predators to thrive would be a major advance.

POISONS OUT!

THINK ORGANIC, GO ORGANIC!

© Vivian Grisogono MA(Oxon) 2016

Media

You are here: Home poisons be aware Can we do without chemical pesticides?

Eco Environment News feeds

  • Authors set out to correct under-representation of female sounds – and found some surprising revelations

    When we hear the beautiful call of a bird from a high bough, we’re told it’s likely to be a male – singing for territory, or belting out tunes to woo a female. But as the annual dawn chorus reaches a crescendo this spring, a new guidebook is urging us to think again – and turn our ears to the hidden world of female birdsong.

    The songs, sounds and sights of female birds have historically been overlooked in field guides and sound archives. In 2016, just 0.01% of the bird sounds in the global Xeno-Canto sound library were labelled female. Another sound archive was just 0.03% female, according to a 2018 study.

    Continue reading...

  • Rising sea levels and ecological damage caused by heavy use of flood defence system force city authorities to consider next move

    The Arsenale, the colossal shipyard that was the engine of the Venetian Republic’s domination for seven centuries, remains the nucleus of the city’s control over the water. Its northern section is made up of cavernous brick warehouses called capannoni, which in the 16th century could produce a warship a day through a rigorously ordered assembly line.

    Now, one of them houses the operations centre of the Mose, the sprawling flood defence system that protects the city.

    Continue reading...

  • A former horticultural nursery in Regent’s Park has been transformed into a diverse mix of habitats, with a wide range of species already spotted ahead of its opening to the public on April 27

    When the Queen Elizabeth II garden opens in Regent’s Park this month, the first people to visit the Royal Parks’ £5m biodiversity project will quickly discover they are not, in fact, the first visitors.

    That honour belongs to a hairy-footed flower bee, a breeding pair of geese, some dragonfly nymphs, a flock of grey wagtails, a prickle of hedgehogs, an armada of newts, a flutter of spring butterflies and a “very cheeky” fox.

    Continue reading...

  • Changing climate, new techniques and a homegrown study programme have all helped drive a UK viticulture boom

    Rows of vines stretch across the rolling hills of rural Dorset. Currently waist height, they appear bare against a bleak spring sky. Up close, you can see they are already dotted with tiny woolly buds as they exit their winter dormancy for a new growth cycle.

    Come summer these rows will be laden with chardonnay, pinot noir and pinot meunier grapes, ready to make the latest batch of English sparkling wine from the Langham estate near Dorchester.

    Continue reading...

  • Even as we empathise with these intelligent animals, our relentless push for resources kills them in their thousands, just as whalers once hunted them to the brink of extinction

    For weeks now, a humpback whale has been trying to die. Entangled in ropes, it had wandered into the shallow Baltic Sea. Unable to feed, it is now subject to extreme dehydration, since whales satisfy their thirst through the fish they eat.

    In such a parlous situation, the whale’s last resort was to strand itself on Poel Island, in the Bay of Wismar. Sadly, it has been a slow death. Beached whales die because they are crushed by their own weight. The German humpback’s agony may have been prolonged because it lay in shallow water and was thus only partly submerged.

    Continue reading...

  • The US attack on Iran has made the need for renewable energy inarguable. Environmentalists are now being seen for the pragmatists that they are

    Donald Trump has done more to accelerate the energy transition than anyone else alive. Fossil fuel companies bankrolled his presidential campaign to stop the transition in its tracks. But when you back a volatile narcissist, unable to concentrate for more than a few minutes at a time, you shouldn’t expect to control the outcome.

    It’s not that the fossils are suffering yet. As prices have soared since Trump and Netanyahu attacked Iran, oil executives have been selling shares at gobsmacking prices: the CEO of Chevron, for example, has cashed $104m so far this year. Vladimir Putin has also received a massive boost to his Ukraine invasion budget. As promised, Trump has gutted clean energy rules and programmes, green alternatives and environmental science. A fortnight ago, he stated, with the usual quantum of evidence (zero): “The environmentalists, I mean, they are terrorists … I call them environmental terrorists.”

    George Monbiot is a Guardian columnist

    Continue reading...

  • Santa Marta conference born out of frustration at Cop summits, where renewable progress has been stalled by major polluters

    Everybody knows fossil fuels cause climate breakdown, but until recently, mention of them was all but erased from the annual UN climate summits. Last year, two weeks of discussions ended without fossil fuels being mentioned in the final outcome.

    Frustration with those talks led a small developing country with a large fossil fuel sector – Colombia, the largest coal and fourth biggest oil exporter in the Americas – to rewrite the rules. With co-convener the Netherlands, and support from more than 50 countries, Colombia will host a groundbreaking new global conference this month to begin the long-awaited “transition away from fossil fuels”.

    Continue reading...

  • In Poland, 80,000 people still work in coalmines – the last in the European Union that is fully committed to the energy transition. Once active mines are being converted to other uses, and yet coal is being extracted at record rates worldwide, and with the Iran war pushing up oil and gas prices, some in Poland are asking whether it is worth completely phasing out this fossil fuel

    Coal dust is fine; it seeps into the pores of the skin. That is why a thin black line permanently traces the outline of Rafal Dzuman’s eyes, as if he were wearing makeup. Team leader of the G-2 mining crew, 49-year-old Rafal Dzuman has been descending every day to 700 metres below ground for at least 20 years, at the Murcki-Staszic coalmine in southern Poland. Opened in the mid-17th century and today owned by the Polish giant PGG, the mine sits on the southern outskirts of Katowice, and still extracts about 23,000 tonnes of coal a day.

    Katowice, Poland: Miners exit the lift after working in the coal-mining tunnels at the Murcki-Staszic Mine (PGG Group), located on the southern outskirts of the city. Coal mining began here in 1657; today, the mine’s daily production stands at about 23,000 tonnes

    Continue reading...

  • The planning minister will shortly decide whether to approve a Sydney aged care development on a site at risk of serious flooding

    An aged care development in Sydney’s inner west is looming as a key test of the New South Wales government’s plans to rapidly boost the housing supply.

    The proposal for seniors housing at Junction Street in Forest Lodge, including a 12-bed aged care facility and 71 independent living units, is being assessed under the state significant development pathway after closing to public submissions in October last year.

    Continue reading...

  • After deadly 2023 fires, recent storms and ICE raids, Lahaina residents are determined to rebuild the town for their community

    In March, Hawaii was hit with two back-to-back storms, bringing the worst flooding it’s seen in 20 years. In Lahaina, Maui, muddy flood waters turned streets into rivers and carved new paths through the barren landscape, breaking open roads and flooding houses. In their wake, sinkholes appeared, engulfing cars.

    This is nearly three years after the deadliest wildfires in US history ravaged Lahaina, destroying more than 2,000 structures and killing more than 100 people. Hundreds of affected households are still in temporary housing. Poverty, unemployment and housing instability, rife before the fires, have only worsened.

    Continue reading...

Eco Health News feeds

Eco Nature News feeds