There are other products and activities, which all farms use to increase sales.

Every farm used to have its own cider mill.

Many small farms use organic methods but cannot afford to become certified.

Not only did they find that this farm uses less energy but the fish looked and tasted better.

"Even today it is no easy matter, getting to where Hesiod's farm used to be," he says.

The farm uses modern water treatment and is building artificial wetlands.

Many farms also use machines, which cut down on the number of people needed to farm the land.

They can be used as a temporary measure when growth or harvest conditions require more space, though some farms use them every year.

The agency will also take a close look at the technologies that big farms use to control runoff.

It would be wise to ask whether the farms use pesticides, and if so when the plants were last sprayed.