Blar i Vitenskapelige artikler på forfatter "Øverland, John Ingar"
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Evaluation of pre-harvest desiccation strategies in red clover (Trifolium pratense L.) and white clover (Trifolium repens L.) seed crops
Havstad, Lars T.; Øverland, John Ingar; Aamlid, Trygve; Gunnarstorp, Trond; Knudsen, Geir; Sæland, Jon (Peer reviewed; Journal article, 2022-07-07)Desiccation with diquat about one week before seed harvest has been common practise in Norwegian clover seed production. However, after withdrawal of diquat in 2020, clover seed growers no longer have desiccators available. ... -
Repellency of insecticides and the effect of thiacloprid on bumble bee colony development in red clover (Trifolium pratense L.) seed crops
Havstad, Lars T.; Øverland, John Ingar; Valand, Silja; Aamlid, Trygve (Journal article; Peer reviewed, 2019-03-20)The study intended to compare repellency of three insecticides on bumble bees and honey bees in Norwegian red clover (Trifolium pratense L.) seed crops, and to examine effects of thiacloprid on bumble bee colony development ...