Pterocarpus marsupium, Roxb. |
Family : Leguminosae - Papilioniodeae |
Common Name : Bijasal |
Telugu Name : Yegisa |
General :
It is a common tree of the moist and dry deciduous forests of Andhra Pradesh. Identified by imparipinnate (5-7 leaflets), coriaceous, dark green, shining leaves and exudation of red juice from the bark on incisions. It grows better on well-drained alluvial and sandy loam to loamy xoils.
Flowering :
Golden yellow flowers with dark calyx in large panicles appear from June to October. Flowering season is short. |
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Fruiting : |
Pods ripen from December to March and become dark reddish brown in colour and remain on the tree upto end of May. |
Morphology of the Fruit / Seed : |
Pods flat, orbicular, winged, 3 to 5 cms in diameter, 1-seeded, indehiscent. |
Seed Collection and Storage : |
Pods are collected from February to May from the trees or from the ground. Pods are dried and stored in gunny bags. Viability is retained for one year. |
Seed Biology : |
No. of pods per Kg. |
Germination percentage |
Plant percent |
No. of seedlings per Kg. |
1935 |
45 to 50 |
20 to 30 |
532 |
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Pretreatment : |
Soaking the seeds for 72 hours in cold water or in cowdung slurry for 48 hours. |
Nursery Technique : |
Seed can be put in bigger polybags (because of fast development of root) in February to March; or the stumps can be prepared from one year old seedlings raised in primary bed.
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