White yam or African yam (Dioscorea rotundata) is a new crop species of
edible yam introduced from Nigeria.
Sree Subhra: The tuber contains
27-28% dry matter, 21-22% starch and 1.8-2% protein. It is drought tolerant with
9-10 months duration.
Sree Priya: The tuber contains
25-27% dry matter, 19-21% starch and 2-2.5% protein. It is drought tolerant and
duration is 9-10 months. It is suitable for intercropping in mature coconut garden
and with banana.
Sree Dhanya: It is the first
dwarf variety. The tubers have 28-30% dry matter, 22-24% protein and 0.3-0.5% sugar.
FYM 15 t/ha to be applied at the time of land preparation followed by application
of NPK fertilizers @ 100:50:100 kg/ha. Full dose of P fertilizer along with 50 per
cent of N and K fertilizers to be applied as basal when 50 per cent of the planted
setts sprouts. The balance 50 per cent of N and K fertilizers to be applied as top
dressing, 1 month after the basal dressing which could be combined with intercultural
Rapid seed yam production (minisett technique)
In this method clean and healthy yam tubers weighing about 1 kg are cut into cylindrical
(disc-like) pieces, each about 5 cm thick. From each such piece, 2-4 small pieces
(30 g) could be obtained by cutting the disc longitudinally or along the two perpendicular
diameters. Such a piece is called a "minisett". The minisetts are then spread out
under light shade for an hour with cut surface facing up before planting them in
the nursery seedbeds. The minisett takes 2-3 weeks for sprouting. At this stage,
they are transplanted to the main field at a spacing of 50 cm on ridges taken 1