Date post: | 16-Apr-2017 |
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RUBBER INDUSTRY
SRI LANKA in
INTRUDUCTION
• Scientific name: Hevea brasiliensis• Introduction of the rubber plant to sri
lanka: Sir Henry Wickham• First planting of rubber:
• Henarathgoda botanical garden• Peradeniya botanical garden
• Reason for expansion of rubber:The eventual destruction of the coffee plantations
Basic Requirements for Rubber Cultivation
• Temperature :27 c• Rain fall over 2000 mm• Uplands between 0-300 m• Literate soil
Suitable Soil Classes for Rubber Cultivation
Parambe soil classHomagama soil class Agalawaththa soil classRathnapura soil classDeniyaya soil class Matale soil class
Water (56% - 60%) Rubber (30% - 40%) Protein (0.2%) Sugar (0.1%) Resin (0.05%)
Preservation of Latex Coagulation of latex takes place when pH
is less than 4.5. An alkaline media is used to prevent that.
• NH3
• Na2CO3
• Na2SO3
Methods of Preparing Rubber
Sheet rubber Crape rubberBlock rubberConcentrated rubber
Tapping
Collecting latex
Coagulation of latex Drying ribbed smoke sheets
Storing
Rubber Production Rubber Production of Sri Sri LankaLanka
0
10
20
30
40
50
60
1992 1993 1994 1995 1996
Sheet rubber
Crape rubber
Centrifuged latex &other
Kg (mil;)
Main Exporter
China
Sub Exporters Singapore Japan Pakistan Korea
Mexico England German
Trade of Rubber1999 2000
Production (million kg.) 97 87 Area of Cultivation (ha) 159 158 New Planting (ha) 218 251 Local Consumption (million kg) 54 55 Export quantity (million kg.) 43 33 Export Income (million Rs.) 2.305 2.179
THE END
Thanks ANUPAMA Nang & Malli