Development of weevil populations on sweet potatoes in St. Croix, U.S. Virgin Islands
作者:
F. I. Proshold,
期刊:
Tropical Pest Management
(Taylor Available online 1986)
卷期:
Volume 32,
issue 1
页码: 5-10
ISSN:0143-6147
年代: 1986
DOI:10.1080/09670878609371018
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Nine sweet potato cultivars were grown on St. Croix, U.S. Virgin Islands and assessed for development of weevil populations. Of the two species present,Cylas formicarius elegantulus(Summers) was more numerous thanEuscepes postfasclatus(Fairmaire) (94%). All cultivars were infested soon after planting and populations became large enough to reduce yields. Ratios of the two species varied depending upon cultivar. Differences were observed in susceptibility among cultivars and were identified as escape, tolerance and nonpreference. In conjunction with other control strategies, sweet potato varieties that are less susceptible to weevil infestations will be useful in managing weevil populations in the tropics.
点击下载:
PDF (550KB)
返 回