Browsing South African National Veterinary Repository by Author "Palmer, R.W."

Browsing South African National Veterinary Repository by Author "Palmer, R.W."

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  • Control of pest blackflies (Diptera: Simuliidae) along the Orange River, South Africa: 1990-1995 
    Palmer, R.W.; Edwardes, M.; Nevill, E.M.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1996)
    The efficacy of Bacillus thuringiensis var. israelensis (B.t.i.) and temephos in controlling the pest blackfly Simulium chutteri Lewis along the middle Orange River between 1990 and 1995, was assessed. Larvicides were ...
  • A rapid method of estimating the abundance of immature blackflies (Diptera: Simuliidae) 
    Palmer, R.W.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    A ten-point visual method of estimating the abundance of immature blackflies in the field is proposed and tested. The method is based on the comparison of larvae and pupae found on natural substrates, with ten ...