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Nursery technique:
Raising propagules
March, April or May months are suitable for raising nursery from
seeds. Mature and healthy pods are chosen to collect theseeds;
these are sown in raised nursery beds. It takes 10–15 days for
the germination to complete. Pretreated seeds (10–12 kg) are
sown per bed (10 m × 1 m) of sandy loam or loamy soil in April
and covered with a thin layer of soil or hay. After one year,
stumps can be prepared, which are planted in polybags in
February to March, to be utilized after four to five months as
stump-sprouted seedlings.
Propagule rate and
pretreatment About 1 kg seeds are needed to raise seedlings for
1 hectare of plantation. Seeds show only about 50%–60%
germination and about 40% plant survival. Seed treatment with
GA3 (gibberellic acid)+BA (benzyladenine) @250 PPM (parts per
million) helps in early and optimum germination. Alternatively,
seeds can be soaked in cold water for 72 hours or in cow dung
slurry for 72 hours[1].
10 to 15 Kgs of
pretreated seeds are sown per bed (12 x 1.2 mts) of sandy loam
or loamy soil in April and covered with a thin layer of soil or
hay. After one year, stumps can be prepared which are put in
polybags in February to March, to be utilized after 4-5 months
as stump sprouted seedlings[2].
Source:
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Agro-technique study carried
out by P Division of Horticulture, University of
Agricultural Sciences, G K V K Campus, Bangalore – 560 065.
P Dhanvanthari Vana, Department of Forestry, Government of
Karnataka, Jnanabharathi Campus, Bangalore University,
Bangalore.
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http://forest.ap.nic.in/Silviculture%20of%20Species/Forest%20Seeds/077.htm
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