Influence of spray fluid volume and purity on the effectiveness of a granulosis virus infecting sugarcane shoot borer,Chilo infuscatellusSnellen
作者:
S. Easwaramoorthy,
S. Jayaraj,
期刊:
Tropical Pest Management
(Taylor Available online 1991)
卷期:
Volume 37,
issue 2
页码: 134-137
ISSN:0143-6147
年代: 1991
DOI:10.1080/09670879109371560
出版商: Taylor & Francis Group
关键词: GV of Chilo infuscatellus;spray volume;nature of preparation;microbial control
数据来源: Taylor
摘要:
Two field experiments were conducted with a granulosis virus infecting sugarcane shoot borer,Chilo infuscatellusSnellen. In both the experiments, application of the virus significantly reduced the borer infestation compared to untreated control. The first experiment was carried out to determine the effectiveness of the virus applied as high and low volume sprays. When virus was applied at 5.5 x 1012IB/ha as high volume (500 I/ha), 70.2% of the plants were protected from shoot borer infestation compared to 53.6% in low volume spray (150 I/ha). Significant reduction (P> 0.01) in shoot borer infestation was observed in plots treated with high compared to low volume spray. In the second experiment the effectiveness of the virus applied as crude and purified preparations was assessed. Both crude and purified preparations significantly(P >0.01) reduced the borer infestation compared to untreated check. No significant differences (P < 0.05) were observed between plots treated with crude and purified preparations of the virus.
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