Category Archives: Farming

Loss of bees causes crop shortage

A Guardian newspaper report:-

“A lack of bees in agricultural areas is limiting the supply of some food crops, a new US-based study has found, suggesting that declines in the pollinators may have serious ramifications for global food security.

Species of wild bees, such as bumblebees, are suffering from a loss of flowering habitat, the use of toxic pesticides and, increasingly, the climate crisis. Managed honeybees, meanwhile, are tended to by beekeepers, but have still been assailed by disease, leading to concerns that the three-quarters of the world’s food crops dependent upon pollinators could falter due to a lack of bees.

Of seven studied crops grown in 13 states across America, five showed evidence that a lack of bees is hampering the amount of food that can be grown, including apples, blueberries and cherries. A total of 131 crop fields were surveyed for bee activity and crop abundance by a coalition of scientists from the US, Canada and Sweden.  …. ”

Read more :-

https://www.theguardian.com/environment/2020/jul/29/bees-food-crops-shortage-study

https://royalsocietypublishing.org/doi/10.1098/rspb.2020.0922


 

Moths have ‘secret role’ as crucial pollinators

BBC Report:-   “Dr Walton from University College London and colleagues monitored moth activity around ponds in agricultural areas of Norfolk.

They found that 45% of the moths they tested were transporting pollen, which originated from 47 different plant species, including several that were rarely visited by bees, hoverflies and butterflies.

The scientists found that while bumblebees and honeybees are critically important, they tended to target the most prolific nectar and pollen sources. Not so with moths.

“From what we see from our work, moths tend to be generalists, meaning they’re not specifically visiting a narrow group of flowers,” said Dr Walton. … ”

https://www.bbc.co.uk/news/science-environment-52630991

https://royalsocietypublishing.org/doi/10.1098/rsbl.2019.0877

Mass bee die-offs – Brazil’s pesticide boom

Bees are sentinels’: “mass bee die-offs signal the wider impact of Brazil’s pesticide boom”

“The footage is unpleasant to watch: thousands of bees writhe, disoriented, on the ground in front of their hive. The dead bodies of thousands more lie beneath them.

But the smell, said beekeeper Aldo Machado, is even worse.

“Dead bees smell like dead rats,” he said. “The smell is very strong, it really is. It’s like any other meat.”

Half a billion bees are estimated to have died from December 2018 to January 2019 in southern Brazil. Machado, vice-president of Rio Grande do Sul’s beekeeping society, has been hearing reports of die-offs since 2013.

Machado sent samples of his bees for analysis, which showed that they were contaminated with an insecticide called fipronil, commonly used to control ants and termites on soy crops.”

See the full report…
https://unearthed.greenpeace.org/2020/02/27/bee-die-offs-soya-brazil-pesticide-boom-biodiverisity-agriculture/

Testing products which help (?) bees

Bees and wildlife are much in the public eye these days, with frequent media reports of declines.  In the UK, for example, approximately 70% of the land area is used for agriculture. Clearly, helping wildlife at a national level requires agricultural land to play a major role and there are various encouragements for this, with funding opportunities like the Countryside Stewardship scheme (Supplement 1) (244 separate grants including for ‘badger gates’, ‘beetle banks’, and ‘autumn sown bumble bee mix’) and advice and support from organisations such as LEAF (Supplement 2) (Linking Environment and Farming).

What can the general public do?  A plethora of products such as nest boxes, feeding stations and wildlife friendly seeds are available to purchase on-line and in garden centres.  Internet shopping websites such as Amazon UK list over 10,000 products for bees in their Garden and Outdoors section.

Here we take a close look at a number of these products which are specifically designed to help bees and other insects: bee hotels, bee bricks, bee and butterfly seed balls, and ladybird and butterfly houses. Our investigation uses a number of approaches, including expert responses and scientific research results….

https://www.tandfonline.com/doi/full/10.1080/0005772X.2019.1702271

Too many honey bees threaten wild bee numbers

Come springtime the Brussels region’s environment agency Bruxelles Environnement will take up the beehives it manages at nature sites in Brussels, and remove them permanently.

The move forms part of a plan by the region to tackle the recent huge growth in members of the public keeping bees – a trend inspired by concerns about pollution, climate and biodiversity. Bees have become something of a mascot for this movement, in part because they are an excellent barometer of environmental conditions, and in part because of their crucial role in maintaining biodiversity.

But it’s possible to have too much biodiversity, and the honey bee – a variety essentially created by Man for Man – now represents a threat to its wild cousin….

https://www.brusselstimes.com/brussels-2/90095/brussels-wants-to-stop-unfettered-growth-in-beehives-wild-honey-biodiversity-hives-pollution-climate-apiarist/

Pesticides found to starve fish ‘astoundingly fast’

Report from The Guardian:-

“The Silent Spring prophecy that pesticides could “still the leaping of fish” has been confirmed, according to scientists investigating the collapse of fisheries in Japan. They say similar impacts are likely to have occurred around the world.

The long-term study showed an immediate plunge in insect and plankton numbers in a large lake after the introduction of neonicotinoid pesticides to rice paddies. This was rapidly followed by the collapse of smelt and eel populations, which had been stable for decades but rely on the tiny creatures for food. … ”

https://www.theguardian.com/environment/2019/oct/31/fishery-collapse-confirms-silent-spring-pesticide-prophecy

A third of British wild bees and hoverflies are in decline

A widespread loss of pollinating insects in recent decades has been revealed by the first national survey in Britain, which scientists say “highlights a fundamental deterioration” in nature.

https://www.theguardian.com/environment/2019/mar/26/widespread-losses-of-pollinating-insects-revealed-across-britain

https://www.bbc.co.uk/news/science-environment-47698294

Strips of wildflowers could cut pesticide spraying

Strips of wildflowers across farm fields could cut pesticide spraying.   Guardian newspaper report:-

“The stripy fields have been planted across England as part of a trial to boost the natural predators of pests that attack cereal crops.

Long strips of bright wildflowers are being planted through crop fields to boost the natural predators of pests and potentially cut pesticide spraying.  The strips were planted on 15 large arable farms in central and eastern England last autumn and will be monitored for five years, as part of a trial run by the Centre for Ecology and Hydrology…. ”

https://www.theguardian.com/environment/2018/jan/31/stripes-of-wildflowers-across-farm-fields-could-cut-pesticide-sprayinghttps://royalsocietypublishing.org/doi/full/10.1098/rspb.2015.1369

https://royalsocietypublishing.org/doi/full/10.1098/rspb.2015.1369