Abstract
Brassica oilseeds are important protein crops for Nordic agriculture. Oilseed production is challenged by multiple insect pests, most importantly the pollen beetle (Brassicogethes aeneus). Concerns about pyrethroid resistance and potential harm to beneficial insects demands seeking for alternatives to synthetic insecticides. Conservation biological control through supporting natural enemies is a promising option for pollen beetle management. Here, four soil tillage strategies were applied with and without insecticide (pyrethroid tau-fluvalinate) to oilseed rape (Brassica napus L.) grown over three years in South-Western Finland to investigate the effect of different management strategies on the number of pollen beetle and its key natural enemies, oilseed rape yield and economic profitability. The use of tau-fluvalinate was not detrimental for parasitic wasp activity, but there was variability in their response to tau-fluvalinate treatment by cultivation strategy and year. However, tau-fluvalinate combined with repeated heavy soil management increased the number of pollen beetles, indicating disrupted dynamics between pollen beetles and their natural enemies. Importantly, economic profitability was sustained without insecticide inputs when soil cultivation was minimized.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 3
Claim · model-written summary
Tau-fluvalinate was not detrimental for parasitic wasp activity in oilseed rape.
- Taxon
- oilseed rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Interactor
- parasitic waspe1biocontrol_agent
- Outcome
- parasitic wasp activitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“on oilseed rape in Finland”
e1“The use of tau-fluvalinate was not detrimental for parasitic wasp activity”
Claim · model-written summary
Tau-fluvalinate combined with repeated heavy soil management increased the number of pollen beetles.
- Taxon
- oilseed rapeBrassica napust0
- Treatment
- tau-fluvalinate combined with repeated heavy soil managemente2
- Interactor
- Brassicogethes aeneus
_(3710884154).jpg?width=60)
Brassicogethes aeneuse3pest - Outcome
- number of pollen beetlese2
- Direction
- increasede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(3710884154).jpg?width=500)
Verbatim
t0“on oilseed rape in Finland”
e2“tau-fluvalinate combined with repeated heavy soil management increased the number of pollen beetles, indicating disrupted dynamics between pollen beetles and their natural enemies”
e3“Oilseed production is challenged by multiple insect pests, most importantly the pollen beetle (Brassicogethes aeneus)”
Claim · model-written summary
Economic profitability of oilseed rape was sustained without insecticide inputs when soil cultivation was minimized.
- Taxon
- oilseed rapeBrassica napust0
- Outcome
- economic profitability was sustained without insecticide inputse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on oilseed rape in Finland”
e4“economic profitability was sustained without insecticide inputs when soil cultivation was minimized”