Sweet-potato productivity as affected by recurrent use of vines as planting-material

摘要: Abstract Yield performances of apical shoot cuttings sweet potato (Ipomoea batatas) obtained from crops raised 2 or 4 times recurrently through vines, were compared with those tubers. The recurrent use vines as planting-material did not show any marked variation in market-grade tuber yield, but it significantly decreased vine yield and increased weevil infestation Cultivars ‘Cross-4’, ‘RS-5’ differed performance