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.
2006
Sammendrag
Jordbærmjøldogg (Sphaerotheca macularis) og jordbærøyeflekk (Mycosphaerella fragariae) kan gi betydelig skade både på bær og bladverk hos jordbær. Det finnes flere alternative midler som har forebyggende virkning mot mjøldogg og øyeflekk. De mest aktuelle av disse er ulike såper (som grønnsåpe), oljer (vegetabilske oljer og mineraloljer) og bakepulver (natriumhydrogenkarbonat). Svovel er også et godt forebyggende middel mot mjøldogg som også er tillatt brukt i økologisk dyrking.
Forfattere
Maria HerreroSammendrag
Det er ikke registrert sammendrag
Forfattere
Brita ToppeSammendrag
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Forfattere
Nina JohansenSammendrag
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Forfattere
Hans OvergaardSammendrag
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Sammendrag
Growth cessation and dormancy development in autumn are important adaptive responses of plants for survival in cold climates. This requires the timely sensing and transduction of a seasonal environmental signal, which for most species, including strawberry, is the decreasing daylength of autumn. However, in strawberry plants the dormant state is only quantitative and can be considered a state of semidormancy. Thus, the so-called dormant plants developing under prolonged short day (SD) conditions in autumn retain the capability for growth, albeit at a reduced rate. Dormancy and flowering responses of the strawberry cultivars Korona and Elsanta were studied in controlled environments. Plants were exposed to short day for 5 weeks at temperatures ranging from 9 to 27°C, and subsequently forced at short and long day at 18ºC. Effects on leaf and inflorescence growth and runner formation were recorded. Results from these and further experiments with prolonged short day exposure at temperature of 6 and 15ºC, will be presented and discussed.
Forfattere
Trond HofsvangSammendrag
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Forfattere
Nina JohansenSammendrag
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Sammendrag
A system for winter greenhouse production of strawberries was developed in Norway. Plants of the June-bearing cultivar `Korona" were artificially induced to flower with short-day (SD) treatments. Plants were induced to flower three times: in July, in September and in December, and were harvested from November to June. Three-week old strawberry plants exposed to fourteen 12-hour SD cycles in May, were compared to non-treated plants (control) and large, cold-stored tray-plants. Photoperiod preconditioned plants produced significantly more branch crowns than control plants, but less than cold-stored tray-plants. Preconditioned plants produced more fruits than control plants, but the difference was not significant. Cold stored tray-plants had the highest total yield. Large multiple-crown, cold-stored tray-plants are of variable quality and expensive in Norway. Photoperiodic preconditioning is potentially useful for increasing strawberry productivity and therefore the profitability of a winter greenhouse production system.
Forfattere
Nina JohansenSammendrag
Det er ikke registrert sammendrag