Influence of peelsett length on yield of minitubers
Abstract
Five lengths of peelsett pieces, 1.0 cm, 1.5 cm, 2.0 cm, 3.0 cm and 4.0 cm of two yam varieties, Obiaoturugo (D. rotundata Poir) and Um 680 (D. alata L.) were compared in 1998 and 1999. Peelsett pieces 3 cm long (6.7g) at 150,000 stands/ha gave the highest tuber yield similar to the tuber yield of minisetts at the same seed-rate (1 tonne/ha). Of the tuber sizes yielded by Obiaoturugo, 78.4% were between 20g and 100g; of Um 680, all the tubers were above 20g with some above 200g. In Obiaoturugo, the percentage sprouting of the 3 cm pieces were 78.2% and 98.5% in Um 680. It is envisaged that minitubers might replace the minisetts (25g) in mass multiplication of seed-yams.[Niger Agric. J. 33 (2002): 68-75]
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