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
Seed borne diseases can cause serious problems in organic cereal production because no fungicide treatments can be used and so far only few alternative treatments are approved. The effects of alternative seed treatments against net blotch (Drechslera teres) in barley and leaf blotch (D. avenae) in oats were investigated by laboratory tests and field trials at two locations in Norway in 2005. A barley seed lot with 65 % D. teres infected seeds and an oat seed lot with 15 % D. avenae infected seeds were used. The treatments included Inulex*, Terra Biosa**, acetic acid and Cedomon***, in addition to chemical seed treatment (triticonazol + imazalilsulfat) and untreated seeds as controls. Seeds were analysed for germination and pathogens in laboratory (2x100 seeds) and planted in rows of 100 seeds with 8 replicates in each field location. Percentage emergence and seedlings with primary infections were recorded at BBCH 12-13. Infection level of D. teres recorded in laboratory analyses were reduced significantly by Inulex and acetic acid. In field, the best effect was seen by the acetic acid treatment. The effects against D. avenae were generally poor in laboratory tests and the infection level of the oat seed lot used was too low to give primary symptoms in the field. Similar experiments will be carried out in 2006 and results from this will also be presented. *Extract of Inula viscosa. ** Containing lactic acid bacteria and different herbs. *** Commercial seed treatment (BIOAGRI), based on the soil bacteria Pseudomonas chlororaphis.
Forfattere
Guro BrodalSammendrag
Det er ikke registrert sammendrag
Sammendrag
To avoid problems with seed borne diseases in organic cereal production, seed health testing should be compulsory in certification of organic seed. In general, significantly lower infection frequencies of seed borne diseases are recorded on seedlings than on seed. Thresholds for the amount of seed borne inoculum that can be accepted for organic production are therefore needed. The aim of the work presented is to compare transmission rates of Drechslera on barley and oats under organic and conventional conditions, to be able to decide if existing thresholds used to assess the need of chemical seed treatment, can be applied for acceptance of organic seed lots, or for recommendation of alternative treatments. Field experiments were carried out in 2005 in conventional and organic fields situated close to each other at each of three locations (south/east-Norway, east-Norway and mid-Norway). 10 seed lots of barley and 10 lots of oats, with a range of seed infections (barley: 0-94 % Drechslera teres, average 31.4 %; oats: 0-66 % Drechslera avenae, average 22.0 %) were planted in rows of 100 seeds with 8 replicates in each location/`growing system". Percent emergence and seedlings with primary infections were recorded at BBCH 12-13. On average in the three locations 2.5 % and 1.8 % barley seedlings were infected when grown in conventional and organic fields, respectively. In oats, 2.0 % and 0.9 % infected seedlings were recorded in conventional and organic fields, respectively. Similar experiments will be carried out in 2006 and results from this will also be presented.
Forfattere
Tor J. JohansenSammendrag
Gjennomgang av kålflueproblematikk i nord
Forfattere
Tor J. JohansenSammendrag
Oversikt
Sammendrag
Forsøk med bekjemping av grasugras i frøavl av timotei, enggrapp og rødsvingel ble presentert som poster
Forfattere
Kirsten TørresenSammendrag
Kurs om ugras i engfrøavlen med følgende innlegg: -Fenomenet frøhvile: Hvor mye ugrasfrø og kulturfrø har du i frøbanken? -Historikk, oversikt og gruppering av ugrasmidler (til bruk i frøavlen) -Systemet for godkjenning og off-label-godkjenning i Norge -Resultater fra ugrasforsøk i frøeng av timotei og engsvingel -Resultater fra ugrasforsøk i kløverfrøeng
Forfattere
Odd-Arild FinnesSammendrag
Kjekjøtt er en eksklusiv vare som man må finne et betalingsvillig marked for.
Forfattere
A.J. Murdoch R.A. Nicholls J.L. Gonzalez Andujar D. Benoit A. Davies F. Forcella F. Graziani A.C. Grundy L. Karlsson P. Milberg P. Neve I.A. Rasmussen J. Salonen B. Sera E. Sousa F. Tei Kirsten Tørresen J.M. UrbanoSammendrag
Karakteristikk av frøspiring og frøhvile i frøpartier av meldestokk fra ulike land i Europa og Nord-Amerika ble presentert
Forfattere
Helge Sjursen Lars Olav BrandsæterSammendrag
Generelt kan en si at frøbank er summen av levedyktige frø nedi jorda, både de som er mer eller mindre i hvile (dormante) og de som er spiredyktige umiddelbart. Frø på jordoverflata regnes ofte også som en del av frøbanken.