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 lecture presents Biofrosk turfgrass projects with focus on variety testing
Forfattere
Trygve S. Aamlid Oiva NiemelainenSammendrag
The plant growth regulator Primo Maxx (trinexapac-ethyl) is being evaluated on greens and fairways in a joint Finnish-Norwegain project 2007-2008. Trials are beeing carried out at Bioforsk Øst Landvik and Ballerud Golf Club, Norway and Lepaa Golf course, Finland. Preliminary results from 2007 indicate reductions in clipping yeids varying from 10 to 50%. Depending on dosage, visual turf quality is either unaffected or decreased, mainly due to a more uneven appearance and less competition against weeds.
Forfattere
Trygve S. AamlidSammendrag
Foredraget tar for seg dekningsbidragskalkyler og påviser de viktigste suksesskriterier ved frøavl av timotei, engsvingel og raigras.
Forfattere
Trygve S. AamlidSammendrag
Dette foredraget gir en oversikt over de viktigste resultater i forskinga på gras til grøntanelgg 2003-2007.
Forfattere
Liv NilsenSammendrag
Praktiske restaurerings- og skjøtselstiltak. Målsetninger og ambisjoner ved igangsetting av slike tiltak.
Forfattere
Trygve S. Aamlid Larsbo Mats Nick JarvisSammendrag
Fungi, especially those causing winter diseases, are major problems on golf course putting greens in Scandinavia. Although diseases can be prevented by cultivar selection and optimal maintenance, it is difficult to manage creeping bentgrass (Agrostis stolonifera) and annual bluegrass (Poa annua) greens totally without fungicides. Previous research showed that three commonly used fungicides; iprodione, azoxystrobin, and propiconazole, are liable to leaching when used on sand-based putting greens. One possible reason for this liability is the development of hydrophobic layers or spots causing water to percolate in fingers instead of uniformly through the root zone. The objective of this project was to study the effect of organic amendment and surfactant on turfgrass quality, hydrophobicity and fungicide leaching from a USGA putting green. An experiment was conducted from May 2006 till May 2007 on a three year old experimental green seeded to creeping bentgrass `Penn A-4" in the field lysimeter facility at Bioforsk Øst Landvik, SE Norway (Fig. 1). The experimental plan included two root zone compositions (straight sand vs the same sand amended with 2.3 % (w/w) garden compost (`Green Mix")); two surfactant treatments (no surfactant vs `Primer 604", 19 L/ha applied at monthly intervals from May to September 2006); and two fungicides, Rovral 750 (iprodione 1.5 kg a.i./ha) and Amistar Duo (azoxystrobin + propiconazole, 600 + 375 g a.i./ha), sprayed on three occasions; June, July and October 2006) in factorial combination. Turfgrass quality and disease occurrence, infiltration of water vs ethanol, water droplet penetration time, and spatial variability in soil water content was determined at regular time intervals. Fungicides in leaching water were analyzed 2 - 3 weeks after each application and after snow melt / soil thaw in spring 2007. Regular application of `Primer 604" reduced dry spot occurrence and improved turfgrass quality during the summer months, especially on straight sand plots. This improvement was associated with increased water infiltration rates and a reduction in the spatial variability in soil water content at 4 - 10 cm depth, suggesting that hydrophobicity extended deeper in the profile than the 14 - 19 mm thatch/mat layer. However, despite pesticide application, `Primer 604" also increased snow mold (Microdochioum nivale and Typhula spp.) incidence in spring 2007, probably because of a significant increase in the mean soil water content in the thatch"mat layer during the unusually mild and wet winter months (mean temperature / total precipitation from November 2006 to March 2007 was 3.5°C / 751 mm compared with 30 yr normal of 0.2°C / 516 mm). Leaching of fungicides from root zones with 2.3 % organic matter was always negligible, but, regular use of `Primer 604" on rootzones reduced the total leaching of iprodione, azoxystrobin, and propiconazole from straight sand with 60, 63 and 80 %, respectively. In conclusion, `Primer 604" offers many advantages on straight sand rootzones, but there is also a need for new surfactants that retain less water in the thatch layer during the winter months.
Forfattere
Bolette BeleSammendrag
Foredraget omhandlet partnerskapsavtalen Bioforsk Midt-Norge og LabNett AS har inngått med Nord-Trøndelag fylkeskommune om å gi elever i videregående skole kjennskap til hvordan kjemi og biologi-fagene brukes i nærinsglivet. Målsetningene med partnerskapsavtalen og gjennomføringen i 2006 ble gjennomgått, og erfaringene diskutert.
Forfattere
Liv NilsenSammendrag
Coastal heathlands in Norway.
Forfattere
Liv NilsenSammendrag
Early stages of Calluna vulgaris regeneration after burning of coastal heath in central Norway
Forfattere
Liv NilsenSammendrag
Det er ikke registrert sammendrag