Quelea update April

Subject: Quelea update April
From: Hugo Phillipps <>
Date: Thu, 14 May 1998 08:52:59 +1000 (EST)
For the interest of the list, a message originally sent to the South African
equivalent of BIRDING-AUS.  Red-billed Queleas are small birds in the Weaver
subfamily, and are subject to regular control operations as pests of grain,
especially Sorghum.

>From: "HENK BOUWMAN" <>
>To: "SABirdNet List" <>
>Subject: Quelea update April
>Date: Wed, 13 May 1998 08:58:09 GMT+2
>Reply-to: "SABirdNet List" <>
>X-listname: <>
>Here the Quelea control data for April 1998, supplied by the 
>Directorate of Agricultural Resource Conservation.
>4 Operations were carried out.
>1) Hertzogville, FS,  1.3 ha, Explosion in thorns, 390 000 killed, 
>%97 kill rate
>2) Bultfontein, FS,  8 ha, Chemical in thorns, 900 000 killed, %90
>kill rate
>3) Hertzogville, FS,  1.2 ha, Explosion in thorns, 280 000 killed, 
>%93 kill rate
>4) Brandtfort, FS,  0.8 ha, Explosion in thorns, 280 000 killed, %92
>kill rate
>In all cases sorghum was the crop protected.
>In the previous year, 19 operations were done in the FS during the 
>same period. The reason for the decline could be increased 
>emigration, and decreased immigration.
>Dr Henk Bouwman
>Unit for Pesticide Impact
>Plant Protection Research Institute
>Agricultural Research Council
>Private Bag X134
>Pretoria 0001
>South Africa
>Tel 012 8080952
>Fax 012 8081489

Hugo Phillipps,
Birds Australia Conservation & Liaison,
Australian Bird Research Centre,
415 Riversdale Road,
Hawthorn East, VIC 3123, Australia.
Tel: (03) 9882 2622. Fax: (03) 9882 2677.
O/s: +61 3 9882 2622. Fax: +61 3 9882 2677.
Email: <>
Web Homepage:

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