Bumblebee populations on UK arable farms have declined by more than 70% over the past 30 years, primarily through loss of vital nectar food resources and nesting sites as agricultural cropping patterns have changed. One of the 20 bumblebee species has disappeared altogether, and three other species are on the verge of extinction.
Operation Bumblebee (now Operation Pollinator), pioneered and funded by the chemical company Syngenta and initiated in 2006, was set to put the habitat back and revive the fortunes of the humble bumblebee across the entire UK arable farming area. Over 600 farmers, managing in excess of a quarter of a million hectares, joined the new national scheme, with each committed to establishing at least a hectare (2.5 acres) of specific Operation Bumblebee seed mix. This mixture, containing red clover, vetches and sainfoin, was specifically tailored to meet the bumblebee feeding needs through the summer and more particularly to ensure that the queens went into hibernation in the best possible condition to produce maximum viable offspring the following spring.
Operation Bumblebee provided farmers and advisors with the training, skills and technical support to successfully establish habitats rich in traditional flowering species, and then manage them to maximise the benefit to the bees.
Operation Bumblebee demonstrated that pro-active management of dedicated environmental areas would achieve far greater results for all biodiversity than simply de-intensifying farm production. When integrated alongside organic or conventional arable areas, Operation Bumblebee created a practical and workable balance between maximising crop production and reviving the fortunes of this iconic species; it was not uncommon to see an 800% increase in populations in only two years.
In 2007, UK supermarket chain Sainsbury's threw their weight behind the scheme, and having donated a substantial sum to the project, set about encouraging the 300 growers in their fruit and vegetable supply base to follow the arable lead. Training and support was provided to incoming participants, and 80,000 hectares of farmland largely dedicated to supplying Sainsbury's were ultimately covered by the scheme.
Here at HE Hall & Son, we established red clover in many of our arable headlands and had a 2.5 hectare block of organically managed red and white clover in close proximity to our Bramley, Comice and organic orchards; the Organic Concept Orchard was originally drilled with a pure sward of red clover. There is little doubt that the increased populations of Bumble Bees on the farm have had a positive effect on the pollination of our flowering fruit crops during what has all too often been some very challenging spring weather.
The plantings pioneered twenty years ago by Syngenta and widely adopted by Operation Bumblebee have now been refined and evolved into a legume rich mixture (AB15) which is included into our arable rotations amongst a suite of complementary options in DEFRA’s Environmental Land Management Scheme (ELMS).
These rotating areas of legumes in conjunction with the trees, hedgerows and ditches surrounding our relatively small fields have had a massive positive effect not only on the bumblebee populations, but also on the number and diversity of other insects. These include the honey bees, which whilst 150 times less effective than Bumblebees at crop pollination are essential for honey production, and Solitary Bees which are also excellent pollinators as well as the predatory insects that we rely on in our organic systems. This increase in insect life has also led to a greater number and diversity of birds recorded in the farmland bird surveys and ringing activities conducted here by Marden Wildlife volunteers.
Images credited to Marden Wildlife and friends.
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