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India Heritage:Science |
| Agriculture |
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Vrikshayurveda
or the science of plants is another achievement of the ancients, based
on sound sense and practical knowledge. The Brihatsamhita of
Varamahira devotes a chapter to the subject. One passage reads
- 'Prantacchayavinirmukta na manojna jalasayh,
yasmadato jalaprantesvaramanviniveseyet.' The gist is that parks
and gardens are best situated along lakes and rivers. Another recommends
mellow soil for plants, and suggests a means of acquiring this - 'Mrdui
bhuh sarva-vrksanam hita tasyam tilan vapet, Puspitamstamsca mrdniyat
karmaitat prathamam bhuvah.' Sesanum (tila) seeds should be planted
and later, the flowering plant trampled into the soil. There is a verse
dealing with the ideal season and stage of growth for cuttings - 'Ajatasakhan
sisire Jatasakhan himagama, varsagame ca suskandha yathadiksthan praropayet'
i.e. Mid-January to mid-March (the season of dews) is the season for
making cuttings of plants that have not yet flowered or spread their
branches. The plants with branches should be prepared for cuttings in
the season of the mists, i.e, Winter (mid-November to mid-January),
while those with well-grown branches should be transplanted during the
rainy season. Also, the clones should be planted or mounted facing the
same direction as they did on the parent tree. A medicament for the
cloning material - "Ghrtosiralaksaudravidangaksiragomayaih amulaskandhaliptanam
sankramananropanam.' The berries of sesanum, andropogon,
and Embelia ribes (vidanga) together with cowdung are
to be formed a paste of and applied. (This was a protection against
fungal and other diseases). The chapter also suggests a way to ensure
healthy germination and later fructification of the seed - the repeated
application of oil followed by the drying of the seed in good sunlight.
The oils recommended are of Alangium hexapetalum (Angola) or
Cordia myxa (Slesmataka).
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