YAM (Dioscorea rotundata)
yam or African yam is a new crop species of edible yam
introduced from Nigeria.
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.
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.
Dhanya: It is the first dwarf variety. The tubers
have 28-30% dry matter, 22-24% protein and 0.3-0.5%
seed yam production (minisett technique)
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 m apart.