1 Afgrødeøkologi og Produktkvalitet, Faculty of Agricultural Sciences, Aarhus University, Aarhus University2 Department of Genetics and Biotechnology, Faculty of Agricultural Sciences, Aarhus University, Aarhus University3 Department of Agroecology - Crop Health, Department of Agroecology, Science and Technology, Aarhus University4 Department of Agroecology - Crop Health, Department of Agroecology, Science and Technology, Aarhus University
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.
Seed Production in the Northern Light: Proceedings of the Sixth International Herbage Seed Conference, 2007, p. 266-269
Straw; Residue management; Defoliation; Open field burning