Floricane yield and berry quality of seven primocane red raspberry (Rubus idaeus L.) cultivars

Primocane raspberry (Rubus idaeus L.) may produce crop on the lower part of cane during second year its’ growth cycle, if canes are retained over winter. We aimed to evaluate floricane cropping potential and berry quality in seven primocane cultivars, which too late for fall Northern growing conditions. Long plants these cultivars were produced, overwintered, grown like a high tunnel. Harvesting started mid-June, length summer season was between eight 10 weeks. 'Joan J' 'Imara' earliest 'Autumn Bliss' latest. Total yield most 1.7 2.0 kg/cane. ‘Autumn Treasure’ yielded significantly less, Bliss’ produced 2.5 kg berries /cane. The average size 5 g, except Treasure’, had smaller berries. highest sugar content observed 'Kwanza' lowest 'Polka'. High throughput phenotyping proved an effective tool determining shape color. ‘Kwanza’ color reddest, yellowest lightest all cultivars. Based our results, as long production is more reliable than them short ‘Imara’ ‘Kweli’ promising experiment; they excellent quality.