INFLUENCE OF TILLAGE SYSTEM, PLANTING DATE, AND OILSEED CRUCIFERS ON FLEA BEETLE POPULATIONS (COLEOPTERA, CHRYSOMELIDAE)

被引:21
作者
MILBRATH, LR [1 ]
WEISS, MJ [1 ]
SCHATZ, BG [1 ]
机构
[1] CARRINGTON RES & EXTENS CTR, CARRINGTON, ND 58421 USA
关键词
D O I
10.4039/Ent127289-3
中图分类号
Q96 [昆虫学];
学科分类号
摘要
Cultural practices (tillage, planting date) were examined for their effect on flea beetle, Phyllotreta cruciferae (Goeze), populations in three species of oilseed crucifers-Brassica napus L., B. rapa L., and Crambe abyssinica Hochst. No-till appeared to reduce flea beetle densities when compared with conventional tillage. The greater structural diversity of the no-till plots might be interfering with host plant location. Earlier plantings had significantly more flea beetles per plant than later plantings. The Brassica crops yielded higher densities of beetles compared with crambe, supporting earlier reports of crambe resistance.
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页码:289 / 293
页数:5
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