SamplingPhenacoccus manihoti incassava fields in Nigeria
作者:
F. Schulthess,
J. U. Baumgärtner,
H. R. Herren,
期刊:
Tropical Pest Management
(Taylor Available online 1989)
卷期:
Volume 35,
issue 2
页码: 193-200
ISSN:0143-6147
年代: 1989
DOI:10.1080/09670878909371356
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Between 1982 and 1985, Nigerian cassava fields were periodically sampled through three crop growing seasons to analyze the within and between‐plant distribution of CM as affected by weather (dry and rainy season) using the mean crowding statistics and Taylor's power law. Enumerative and binomial sampling plans were developed which take into consideration the seasonal changes in the spatial distribution patterns of CM. The costs of the two procedures were compared to select the most cost‐efficient sampling plan.
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