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Publikasjoner

NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.

2007

Sammendrag

The application of plant growth regulators (PGRs) and insecticides, either alone or in tank mixture, was tested in nine on-farm trials laid out according to three different experimental plans in SE Norway (59-61ºN) from 2002 to 2006. The first plan compared the PGRs trinexapac-ethyl (125 or 250 g a.i. ha-1), chlormequat chloride (2000 g a.i. ha-1) and ethephon (240 g a.i. ha-1) applied on two dates and compared with an untreated check. On average for three trials, seed yield of the diploid cv. Nordi (origin 61ºN) increased 15 % by application of trinexapac-ethyl (250 g a.i. ha-1) at stem elongation, decreased 18 % by application of ethephone at flower bud emergence, and was not significantly affected by any of the other treatments. The diploid cv. Bjursele (two trials) and the tetraploid cv. Betty (one trial) showed no response to any of the PGRs. In the second experimental plan, laid out in two seed crops of the diploid cv. Lea in 2005, trinexapac-ethyl (125 or 250 g a.i. ha-1) was applied alone or in tank mixture with the insecticides alpha-cypermethrin (20 g a.i. ha-1) or dimethoate (500 g a.i. ha-1) on two dates. These trials verified the positive effect of trinexapac-ethyl, but the insecticides had no significant effect, which is not surprising as no harmful insects were detected. The third experimental plan compared insecticides at two developmental stages in a seed crop of cv. Lea with a high occurrence of Apion seed weevil and the lesser clover leaf weevil Hypera nigrirostris. In this trial, alpha-cypermethrin increased seed yield by 14 % when applied at flower bud emergence. Effective from 2004, Moddus 250 EC (trinexapac-ethyl) was approved in Norwegian seed production of selected cultivars of red clover. Research is still underway to evaluate the need for control of various weevils.

Sammendrag

The application of plant growth regulators (PGRs) and insecticides, either alone or in tank mixture, was tested in nine on-farm trials laid out according to three different experimental plans in SE Norway (59-61ºN) from 2002 to 2006. The first plan compared the PGRs trinexapac-ethyl (125 or 250 g a.i. ha-1), chlormequat chloride (2000 g a.i. ha-1) and ethephon (240 g a.i. ha-1) applied on two dates and compared with an untreated check. On average for three trials, seed yield of the diploid cv. Nordi (origin 61ºN) increased 15 % by application of trinexapac-ethyl (250 g a.i. ha-1) at stem elongation, decreased 18 % by application of ethephone at flower bud emergence, and was not significantly affected by any of the other treatments. The diploid cv. Bjursele (two trials) and the tetraploid cv. Betty (one trial) showed no response to any of the PGRs. In the second experimental plan, laid out in two seed crops of the diploid cv. Lea in 2005, trinexapac-ethyl (125 or 250 g a.i. ha- 1) was applied alone or in tank mixture with the insecticides alpha-cypermethrin (20 g a.i. ha-1) or dimethoate (500 g a.i. ha-1) on two dates. These trials verified the positive effect of trinexapacethyl, but the insecticides had no significant effect, which is not surprising as no harmful insects were detected. The third experimental plan compared insecticides at two developmental stages in a seed crop of cv. Lea with a high occurrence of Apion seed weevil and the lesser clover leaf weevil Hypera nigrirostris. In this trial, alpha-cypermethrin increased seed yield by 14 % when applied at flower bud emergence. Effective from 2004, Moddus 250 EC (trinexapac-ethyl) was approved in Norwegian seed production of selected cultivars of red clover. Research is still underway to evaluate the need for control of various weevils.

Til dokument

Sammendrag

Plantemøtet Vest 2007 vert skipa til på Scandic Bergen Airport Hotel, Kokstad ved Bergen, 6. – 7. mars 2007. Denne utgåva av Bioforsk FOKUS inneheld manuskript for i alt 32 av dei 44 føredraga som vert presenterte i fagsesjonane under Plantemøtet Vest 2007. Utgåva er inndelt i tre kapittel som reflekterer sesjonane i programmet for møtet; ”Grovfôr”, ”Kulturlandskap, hjorteforvalting og verdiskaping” og ”Frukt og bær”.

Sammendrag

Plantemøtet Østlandet 2007 arrangeres på Quality Hotell & Resort ved Sarpsborg 7. og 8. februar 2007. Denne boka inneholder sammendrag av 81 av totalt 94 foredrag som blir holdt under møtet. Boka er delt inn i 11 kapitler: Fellessesjon, Mat og matkvalitet, Bioenergi, Klimaeffekter, Økologisk landbruk, Plantehelse og plantevern, Tunneldrift i bær og grønnsaker, Korn, Potet, Grønnsaker og urter og Bær. Noe stoff om plantehelse og plantevern, samt økologisk landbruk finnes også i de andre kapitlene.

Sammendrag

Uforklarlige skader i hagen kan være forårsaket av planteparasittære nematoder. Planter med ujevnt vekst, deformerte blader eller buskete deformerte røtter er noen av nematodesymptomene. Nematoder er mikroskopiske rundormer som lever i jord, planter og dyr. De fleste er saprofytter, men noen fremkaller alvorlige skader på plantene ved at de suger på røtter og andre plantedeler. Dreneringen av næring samtidig med at enzymer sprøytes inn i plantene fører til misvekst avlingstap, og kvalitetsfeil. Noen nematoder er spesialisert til visse vertsplanter, mens andre arter har mange vertsplanter. I en kvadratmeter jord finnes det millioner av mikroskopiske nematoder. Også insekter angripes av nematoder, noen arter kan brukes for biologisk bekjempelse av skadeinsekter.