Post-harvest treatments in smooth-stalked meadow grass (Poa pratensis L.) - effect on carbohydrates and tiller development

Publikation: Bidrag til bog/antologi/rapport/proceedingKonferencebidrag i proceedingsForskning

  • Afgrødeøkologi og Produktkvalitet
  • Institut for Genetik og Bioteknologi

Temperate grass species require a period of short days/low temperature to respond to flower induction stimuli. The same environmental conditions stimulate the increase in carbohydrate concentration in aboveground biomass and the accumulation of reserve carbohydrates in the basal plant parts. The present investigation was initiated to investigate the effect of post-harvest treatments on dry matter production in autumn, carbohydrate content, the number of reproductive tillers and seed yield in a turf-type cultivar ‘Conni' of smooth-stalked meadow grass. The results show that post-harvest treatments influence seed yield and yield components with the general tendency that defoliation increases the number of reproductive tillers, whereas chopping of straw results in fewer reproductive tillers and a reduced seed yield. This effect was eliminated if the crop was defoliated approximately six weeks after harvest and all residues removed. The results from plant samples in autumn indicate that decreasing aboveground biomass production leads to a higher carbohydrate concentration which may stimulate the reproductive development in smooth-stalked meadow grass.

OriginalsprogEngelsk
TitelSeed production in the northern light : Proceedings of the Sixth International Herbage Seed Conference
RedaktørerTrygve S Aamlid, Lars T Havstad, Birte Boelt
Antal sider4
ForlagBioforsk
Udgivelsesår2007
Sider266-269
ISBN (trykt)978-82-17-00234-5
StatusUdgivet - 2007
BegivenhedInternational Herbage Seed Conference - Gjennestad, Norge
Varighed: 18 jun. 200720 jun. 2007
Konferencens nummer: Sixth

Konference

KonferenceInternational Herbage Seed Conference
NummerSixth
LandNorge
ByGjennestad
Periode18/06/200720/06/2007
SerietitelBioforsk FOKUS
Nummer12
Vol/bind2
ISSN0809-8654

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