Farming plays an important role in Worcestershire's countryside and has a significant impact on wildlife in the county. We own and manage farms at Naunton Beauchamp and Lower Smite as well as managing many other grazed and cultivated fields around the county.
Healthy soils lie at the heart of healthy wildlife and food production systems. However, after World War Two, the government instructed farmers to plough up grasslands and maximise yields through the use of intensive cultivation, artificial inputs and plant and animal breeding. Now, over 70 years later, the UK agriculture industry is still seeking to maximise production. We no longer have inherent fertility in the land and there is a risk that intensification using fertilisers and pesticides will continue to be promoted, to the detriment of wildlife and soil condition.
With around 75% of terrestrial wildlife living in the soil, a thriving soil food web is vital to the recovery of the majority of farmland wildlife, most of which continues to suffer ongoing declines. A healthy soil is also fundamental to establishing a resilient cropping system able to cope with the adverse weather patterns created by climate change.
This context, together with the fact that our nature reserves are surrounded by the farmed landscape, makes it vital that we work together with other Worcestershire land-managers and deliver conservation advice on a wide range of subjects. Our work with Severn Trent, through the STEPS programme helps to reduce pesticides entering watercourses and management options promoted by our Water Environment and Agriculture Officer seek to limit pollution from fertiliser and silt. In addition we can offer help with meadow restoration and creation, conservation grazing, soil and water management, green manures, organic farming , woodland management and wetland restoration and creation.
By the time the Trust purchased Lower Smite Farm the soil had already declined in terms of organic matter and soil wildlife. It had become almost totally reliant on artificial inputs to grow arable crops and this was associated with costly heavy cultivations to create seedbeds. Rebuilding soil organic matter and increasing soil invertebrates like earthworms are therefore important considerations in our management. We have planted a wide range of ‘green manure’ mixes, including red and white clovers, cocksfoot, yellow trefoil and phacaelia to ‘feed’ the soil and encourage microbial activity. These mixes also provide good forage for sheep and cattle. We seek to maximise soil health through planting longer term grassland mixes, minimising cultivations, sowing diverse leys which deliver benefits in terms of water holding capacity and carbon storage, as well as feeding and providing habitat for wildlife such as insects, birds and mammals. We do not allow insecticides or slug pellets and instead have removed crops such as oilseed rape that require artificial, environmentally-damaging inputs.
Farming at Lower Smite Farm
The Trust's Lower Smite Farm is, at 65ha, an average sized farm for Worcestershire and like many farms most of the income it generates comes from direct agricultural payments and various Countryside Stewardship grants.
Half the farm is managed organically and we have established a diverse range of crops including traditional varieties of strawberries, blackcurrants, orchard trees, wheat and forage crops. Neighbouring farmers rent the remaining land and help with management operations. Some grow forage for their dairy cattle as well as carrying out management operations for us and we have agreements with others who take forage crops like hay and haylage. Partnership working like this is key to the future and collaborating with neighbours, e.g. swapping hay for farm yard manure and grazing, means we have not had to invest in manpower, machinery or livestock.
The entire farm is in the Higher Level Stewardship scheme (HLS). This pays land-managers to take areas out of production and focus on creating and maintaining a wide range of habitats ranging from wetlands to cultivated fallows for rare arable plants. Within this scheme we have recently planted over 2km of hedges, built a bridge and replaced 500m of fencing that allows us to take in livestock, which will improve the diversity of our grasslands.
You can find out more about the farm on our Lower Smite Farm Reserve pages and our farm manager Caroline has posted an interesting Lower Smite Farm blog with more about the farm's history and some thoughts on modern farming.
Making space for beneficial insects
On well-managed farmland, healthy and thriving populations of native insects should be complementary to crop rotations in managing pests and improving soil quality. Many species provide valuable services and so seeking to maximise their numbers makes good business sense as well as being the 'right' thing to do. For example, species-diverse hedgerows can support up to 1500 insect species, many of which offer vital services such as pollination of flowering crops and pest predation.
Flies, for example, are extremely valuable even though they are frequently overlooked as beneficial insects. Adult hoverflies (there are over 260 species of hoverfly in Britain) eat pollen and drink nectar and their foraging behaviour leads to pollination of a wide range of flowering plants. Just under half of them have larvae that are predators on other insects such as aphids that can carry viruses into crops and reduce yield and quality. Alternative control methods obviously include the use of insecticides but these have knock on effects on wildlife and potentially on public goods like drinking water. We promote an Integrated Pest Management (IPM) approach whereby crop husbandry is planned to engage with nature in order to save money as well as reduce environmental impact. This has included our supporting Friends of the Earth in the promotion of Integrated Pest Management as well as ongoing working with other Wildlife Trusts to develop strategies that will support farmers in their decision making.
Our pollinators project is helping farmers and land mangers to maximise opportunties for benefical insects across their land too. You can find out more about this ambitious and exciting project on our Wild Pollinators Project page.