摘要 |
<p>A spray boom (1) is provided in which the spray boom (1) comprises one or more outlet nozzles (4) and one or more actuator means (9) each of which drives at least one outlet nozzle clearing means (10). The spray boom provides for the accurate dispensing of solutions or suspensions, preferably from a fixed wing aircraft for the aerial top-dressing of agricultural, horticultural and aquacultural areas.</p> |