สืบค้นงานวิจัย
Effects of land productivity on the economic lifespan of rubber plantations: A situation analysis in Sri Lanka
E S Munasinghe - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Effects of land productivity on the economic lifespan of rubber plantations: A situation analysis in Sri Lanka
ผู้แต่ง / หัวหน้าโครงการ (EN): E S Munasinghe
บทคัดย่อ (EN): As in most other natural rubber producing countries, rubber plantation industry plays an important role in Sri Lankan economy providing diverse benefits. Nevertheless, prevailing low rubber price situation has disturbed its production process questioning the financial worthiness of rubber cultivation. Some studies have shown that shortening the lifespan of rubber cultivation would increase its financial worthiness at present price level. Also, agronomists highlight the importance of maintaining high level of land productivity to curb the situation. On this ground, the present study was aimed to investigate how the land productivity of rubber would determine the lifespan of cultivated rubber under Sri Lankan conditions. Specifically, it attempted to analyse the financial viability of rubber cultivation within the practically possible range of increasing land productivity and to examine the consequences of such effects on the decision of reducing the economic lifespan of the rubber tree. Lifecycle analyses were undertaken in this regard considering the two principal parameters of productivity improvement, i.e. increase in yield per tree and increase in effective stand per hectare. Financial worthiness was tested using Net Present Value (NPV), Benefit Cost Ratio (BCR) and Internal Rate of Return (IRR). Under general circumstance with intensified tapping during the last six years of lifespan, financial worthiness (NPV at 10%discount rate) of cultivating rubber was found to be LKR 0.16 Mn/ha with 30 year lifespan; however, the best lifespan was 20 years with the highest NPV of LKR 0.35 Mn/ha. Latex yield increase in terms of both yield per tree and tree stand, had no effect on the maintenance of the highest NPV at 20 years. However with increasing the tree yield by 5%, 10% and 15%, NPV at the best lifespan (20 years) increased to LKR 0.44 Mn, 0.53 Mn and 0.62 Mn/ha, respectively. Similarly with maintaining the greater number of trees (i.e. 10%, 20% and 40% increase from the present level), NPV with 20 year lifespan increased to LKR 0.81 Mn, LKR 0.87 Mn and LKR 0.99 Mn/ha, respectively. In the present low price situation, 20 year lifespan was identified as the best option with the increase in both yield per tree and tree stand for high level of profitability (e.g. the combined effect of 5% yield increase at tree level and 10% improvement in tree stand has increased NPV up to LKR 0.92 Mn/ha ). Agronomic feasibility of increasing yield potentials of rubber plantations and social implications in shortening the lifespan of rubber trees are discussed.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): rubber plantations
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

การอ้างอิง

E S Munasinghe. "Effects of land productivity on the economic lifespan of rubber plantations: A situation analysis in Sri Lanka". ไม่ระบุหน่วยงาน. ม.ป.ป.

E S Munasinghe. "Effects of land productivity on the economic lifespan of rubber plantations: A situation analysis in Sri Lanka". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Effects of land productivity on the economic lifespan of rubber plantations: A situation analysis in Sri Lanka
E S Munasinghe
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
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