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.
2012
Forfattere
M Ashraful Islam Goutam Kuwar Jihong Liu Clarke Dag-Ragnar Blystad Hans Ragnar Gislerød Jorunn Elisabeth Olsen Sissel TorreSammendrag
Abstract Strict control of morphogenesis is essential in production of potted poinsettia. Commonly, this is obtained by the use of plant growth retardants (PGRs), often in combination with early morning temperature drops. Due to negative effects on human health and the environment, the use of PGRs is becoming restricted. Also, energy-saving growth regimes and periods of high temperatures limit effective use of temperature drops. In the present study the use of a high proportion of blue (B) light provided by light emitting diodes [LEDs, 20% blue (B), 80% red (R)] was compared with traditional high pressure sodium (HPS) lamps (5% B) providing similar phytochrome photostationary state to produce compact poinsettia plants. Both in the greenhouse and growth chamber, all cultivars were 20–34% shorter for LED compared to HPS grown plants. Also, leaf and bract area as well as chlorophyll content and total dry matter accumulation were lower under LED. The LED did not delay bract color formation, visible cyathia and flowering compared to HPS, and no difference in post production performance (cyathia/bract abscission or necrosis) between the two light treatments was found. The effect of end of day-red (EOD-R) lighting combination with LED and HPS supplemental lamps during the photoperiod in the greenhouse was also investigated. Reduced stem extension (13%) was observed under HPS only and for one of the two cultivars tested, whereas under the LED regime, there was no effect of EOD-R lighting.
Sammendrag
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Forfattere
Venche Talgø Maria Herrero Juliana Perminow Arild Sletten May Bente Brurberg Arne StensvandSammendrag
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Forfattere
Venche Talgø Gunn Strømeng Juliana Perminow Arild Sletten May Bente Brurberg Maria Herrero Arne StensvandSammendrag
Det er ikke registrert sammendrag
Forfattere
Venche Talgø Gunn Strømeng Juliana Perminow Arild Sletten May Bente Brurberg Maria Herrero Arne StensvandSammendrag
Hestekastanje ble tidligere regnet for å være lite problematisk her i landet, men i de senere årene er det oppdaget en rekke nye sjukdommer. Her gis en kort oversikt over sjukdommene bladflekk, meldugg, antraknose og bakteriekreft på hestekastanje.
2011
Sammendrag
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Sammendrag
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Sammendrag
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