Suspended nozzle column for spraying fence-trained crops, e.g. vines, comprises hollow vertical casing, supporting nozzles at variable heights, hanging from vehicle-borne rack

摘要

The long, narrow, plastics or metal casing (1) is ogival or similarly convex in cross-section with the apex or nose pointing in the direction of travel. Its rear surface (3-d), at least centrally (3d), is flat, with e.g. 3 vertically aligned slots (4), each supporting a spraying head (5). A butterfly nut tightened on a stud, fixed to a clamping plate within the casing, fixes each head at the required height. The casing's pointed cross-section facilitates passage between close set plant rows. The lateral projection of each head is minimized for the same objective, and the top mounting gives the casing a degree of freedom to swing back on encountering an obstacle. As well as the mounting height, fluid supply to each head is individually controllable. The lowest head opt. provides a single rear-facing nozzle (15) to deliver herbicide.