Relation between ploidy and forage yield in red clover (Trifolium pratense L.)

Dataset containing yield data from diploid and tetraploid red clover (Trifolium pratense L.) varieties and candidate varieties from yield trials in Belgium, Germany, Czech Republic, Norway and Sweden over the past 20 years and more. This data was collected from various breeding companies, research institutes, and variety trial agencies. This dataset can be used to compare yield differences between diploid and tetraploid red clover varieties in different European regions and has been used as the basis for the scientific publication 'Relation between ploidy and forage yield in red clover (Trifolium pratense L.) '.