Journal of Entomological Science (2007) 42, 1-10

Andrew W. Lenssen, Gregory D. Johnson, Sue L. Blodgett and Hayes B. Goosey (2007)
Influence of tillage system, oilseed species, and insecticidal seed treatment on flea beetle (Coleoptera: Chrysomelidae) damage, oilseed production, and postharvest residue cover
Journal of Entomological Science 42 (1), 1-10
Abstract: The influence of tillage system and imidacloprid seed treatment on flea beetle (Phyllotreta cruciferae (Goeze)) damage, oilseed production, volunteer barley density, and post harvest residue cover was determined for Polish canola (Brassica rapa L.) and yellow mustard (Sinapis alba L.). Field trials were conducted at Moccasin, MT, USA, from 1998 through 2000. Flea beetle damage was assessed on cotyledon and first true leaf stage plants using a numerical damage rating. Flea beetle damage was low in both tillage systems and on both plant species when imidacloprid seed treatment was applied. In the absence of seed treatment, seedlings of both plant species in conventionally tilled plots usually suffered more damage than did seedlings in zero tillage plots. Canola often sustained more damage than yellow mustard. Across tillage system and insecticidal seed treatment, yellow mustard produced significantly greater (P > 0.0.1) seed yields than canola. Density of volunteer barley was significantly greater (P > 0.01) in conventionally tilled plots. Postharvest residue cover was greater in zero-tillage plots, but all systems easily met USDA, Natural Resource Conservation Service specifications designed to prevent soil erosion.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Andrew W. Lenssen, Hayes B. Goosey

Research topic(s) for pests/diseases/weeds:
damage/losses/economics
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phyllotreta cruciferae	Rape/canola (Brassica napus)	U.S.A. (NW)
	Phyllotreta cruciferae	Yellow mustard (Sinapis alba)	U.S.A. (NW)