Abstract
During the summer of 1982 the Division of Hydrotechnics at the Swedish University of Agricu1tural Sciences bought an irrigation boom from F:a Deier1ing, West Germany. The boom, which is a prototype, is 45 m wide and equipped with 17 def1ector nozzles. Each nozzle is fitted with a pressure regulator so that the fall in pressure along the boom does not inf1uence the flow from the nozzles. The pressure requirement is low; 0.4 - 0.5 MPa (40 - 50 m water column) is sufficient as inlet pressure to an irrigator if a boom is used instead of a spray-gun. The water distribution of the boom was determined during a number of days in August, 1982. The distribution of water was uniform, but not as uniform as given by a good spray-gun under ideal conditions (no wind, correct spacing, correct working pressure). On the other hand, neither the spreading pattern of the boom nor the spacing are influenced by the wind. During the measurements the wind was so strong that it would have been impossible to irrigate with a spray-gun. In practice the boom spreads water more evenly than a spray-gun. The boom gives a very high mean intensity (ca 100 mm/h) but a German investigation reports that the water is delivered in the form of relatively small drops (d
Keywords
bevattningsteknik; rampbevattning
Published in
Report / Swedish University of Agricultural Sciences, Department of Soil Sciences, Division of Agricultural Hydrotechnics
1984, number: 141
Publisher: Sveriges lantbruksuniversitet, Institutionen för markvetenskap, Avd f lantbrukets hydroteknik
UKÄ Subject classification
Agricultural Science
Publication identifier
- ISBN: 91-576-2069-5
Permanent link to this page (URI)
https://res.slu.se/id/publ/125349