Definition: Helicopter

Using different types of sprayers, the federal stations in Changins and Wädenswil conducted comparative tests over a two-year period to assess spray distribution and effectiveness.

Helicopters are extremely useful for transporting materials, fertilisers and grape harvests in steep vineyards. They are also used to stir the air at critical times when there is a risk of frost in spring. They are sometimes used after rain during the harvest to remove excess water from the crop.