Characterisation of key above- and below-ground parameters of different pea cultivars
The replacement of industrially-produced fertiliser nitrogen (N) by improved use of symbiotically fixed N is frequently proposed as a route to creating more sustainable and less environmentally harmful agricultural systems. This study investigated the variation in a range of above and below ground parameters of four cultivars combinable peas (Pisum sativum) in a pot experiment. The effect of N fertiliser was also investigated. Cultivars differed significantly in root and shoot biomass, but their shoot:root ratios did not differ significantly. The number of nodules differed between cultivars and this showed a significant positive correlation with the total length and biomass of the root system. However, the nodulation intensity (NI, nodules m-1 of root length), also differed between cultivars. N fertiliser had no significant effect on root or shoot biomass but was associated with significantly fewer nodules in all cultivars. Correlation analysis showed that there was no direct above-ground trait-predictor for the number of nodules or NI.
Other Titles/Title of Conference
Agricultural Ecology Research: Its role in delivering sustainable farm systems, Dundee, UK
Association of Applied Biologists
Journal Title/Title of Proceedings
Aspects of Applied Biology: Agricultural Ecology Research: Its role in delivering sustainable farm systems