Abamectin to control armoured scales (Hemiptera: Diaspididae) on kiwifruit
作者:
A. J. Greaves,
A. R. Tomkins,
D. J. Wilson,
C. Thomson,
期刊:
New Zealand Journal of Crop and Horticultural Science
(Taylor Available online 1992)
卷期:
Volume 20,
issue 1
页码: 79-83
ISSN:0114-0671
年代: 1992
DOI:10.1080/01140671.1992.10422329
出版商: Taylor & Francis Group
关键词: abmectin;avermectin B1a;kiwifruit;Actinidia deliciosa;Hemiberlesia rapax;Aspidiotus nerii;armoured stale
数据来源: Taylor
摘要:
Abamectin (avermectin B1a) was applied during the 1989/90 season to previously unsprayed kiwifruit (Actinidia deliciosa) vines in the Waikato, New Zealand as seven regularly scheduled applications at 0.76 g a.i./100 litres, following two dormant applications of chlorpyrifos at 24 g a.i/100 litres. Microscopic assessment of harvested fruit recorded 4 scale/100 fruit for the treated vines, in comparison with 54 scale/100 fruit for untreated vines. In the subsequent season four sprays of abamectin were applied at 0.76 g a.i./100 litres combined with mineral oil (Shell Sunspray) at 0.25%. These applications were timed to coincide with the release of second generation greedy scale crawlers. Assessment of harvested fruit showed 16 scale/100 fruit for treated vines, 102 scale/100 fruit for untreated vines.
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