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Details van artikel 21 van 31 gevonden artikelen
| Titel: |
The Experimental Application of Insecticides from a Helicopter for the Control of Riverine Populations of Glossina tachinoides in West Africa. III. Operational Aspects and Application Techniques |
| Auteur: |
Baldry, D. A. T. Kulzer, H. Bauer, S. Lee, C. W. Parker, J. D. |
| Verschenen in: |
International journal of pest management |
| Paginering: | Jaargang 24 (1978) nr. 4 pagina's 423-434 |
| Jaar: |
1978-12-01 |
| Inhoud: |
Descriptions are given of various operational aspects of the dispersal of insecticides, as aerosols and sprays, from equipment fitted to a Bell 47G-4A helicopter, into the riverine forest habitats of Glossina tachinoides Westw. The two aerosol techniques: 'bilateral' and 'unilateral' and a 'unilateral' spray technique, made use of the helicopter main rotor downwash to obtain penetration of insecticide droplets into parts of the G. tachinoides habitats considered important as resting sites. The bilateral technique which involved the helicopter flying above the forest canopy approximately 25 m from the water's edge was easier and safer to execute than the unilateral technique, which involved the helicopter flying over the inner edge of the riverine forest. In future a combination of both types of technique, with some equipment modifications to allow change over from one technique to the other in flight might be more appropriate than using one or the other of the techniques. It was concluded that both aerosol techniques were of limited efficiency in situations where riverine forests were very wide (up to 400 m) and distributionally complex, presumably because during the time taken to treat them, it was possible for flies to move from untreated into, treated parts of the habitat without contacting the insecticide. The most realistic approach to such situations would, therefore, probably be the application of insecticides with good residual properties. The presence of an observer in the helicopter was found to be essential for the successful treatment of riverine vegetation. Provided with detailed maps of the treatment area, the observer was able to advise the pilot concerning which areas should be treated, thus ensuring that no areas were omitted. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 21 van 31 gevonden artikelen
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