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TUBER INFORMATION
LESSER
YAM (Dioscorea esculenta)
It
is grown in a similar agro-climatic situation as that
of D. alata. Planting season and manuring are also similar
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(1)
Sree Latha: This is a selection from Thiruvananthapuram
district with a duration of 8 months. Tubers are oblong
to fusiform with creamy white flesh. Vines twine to
the left.
(2) Sree Kala: This is an early variety with 7.5 months
duration. The tubers have 35-37% dry matter, 23-25%
starch and 1-1.3% sugar
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Seeds
and sowing
Select
medium size tubers weighing about 100-150 g each. Plant
the whole tuber, one in each mound and cover completely
with soil. Mulch the mounds to maintain optimum temperature
and moisture. To plant one hectare 1800-2700 kg of seed
materials are required.
Preparation
of land
Plough
or dig the land to a depth of 15-20 cm. Prepare mounds
at a spacing of 75 x 75 cm incorporating cattle manure
@ 1 kg per mound
Trailing
Trail
the vines by fixing small poles attached with coir rope
and direct 4-6 plants per pole.
The
fertilizer dose and schedule of application are the same
as that of D. alata
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The
crop is ready for harvest by about 7-8 months time. Tuber
yields of 20-25 t/ha can be obtained by following the
improved methods of cultivation
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