bio presentation july 2011
TRANSCRIPT
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Direct seeding, Hydroponics and Aeroponics
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Direct Seeding
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� The seeds are sown directly into the soil by
using special mach
ine� Less water needed, plants achieve faster
growth and these increase the yields
� Example : paddy planting
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� Is a commercial technique for growing
certain plants in culture solution� The root of the plant are immersed in a
solution which contains all the
macronutrients in the correct proportion
� The culture solution is aerated to provide
sufficient oxygen to respiration
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� Is a modified technique of hydroponics
� The plants are suspended in a specialchamber with the roots exposed to the air
� Nutrient solutions are sprayed onto the roots
of the plant at suitable intervals. Light
intensity and temperature can be controlled
� Almost all type of vegetables can be
cultivated by using this methods and higher
yield can be obtained
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THE END
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NEO CYBERPRINCE