Farmers are to deliver fresh fruit and vegetables direct to supermarkets in a bid to cut vehicle pollution.
The pilot scheme in Cornwall means the produce will not be taken on an unnecessary trip to an Asda depot, the chain said.
Potatoes, cabbages and other supplies will instead be taken direct to four stores closer to the farms.
The two-month trial will save up to 6,000 road miles per month, Asda said.
It comes as all the major supermarkets step up their efforts to "go green".
Rival chains Sainsbury and Tesco have both announced plans to launch home delivery schemes for boxes of seasonal fruit and vegetables.
Under the Asda trial, two Cornish farms will take their produce to a third farm, near Hayle, from where the owner will take the produce to Asda stores in Falmouth, St Austell, Bodmin and Plymouth.
This avoids an unnecessary trip to the Asda depot in Bristol, the chain said.
The supermarket's head of ethical sourcing, Chris Brown, said the chain wanted to cut the number of miles its food travels before it hits shop shelves.
But research released separately by the British Market Research Bureau today casts doubt on consumer demand for local produce.
Its survey found that 61 per cent of shoppers were unconcerned about which country their fruit and vegetables came from.
The BMRB survey of 16 to 64-year-olds was carried out online last month.