สืบค้นงานวิจัย
Construction of Rubber Exploitation System for Shortened Economic Life: Expex-315
Sumarmadji - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Construction of Rubber Exploitation System for Shortened Economic Life: Expex-315
ผู้แต่ง / หัวหน้าโครงการ (EN): Sumarmadji
บทคัดย่อ (EN): Recently, larger world rubber demand and better price potentially support Indonesia. Problem is still be faced such as low productivity and efficiency, claim of increased labor pay, difficulties on skilled tappers, security disturbance, much more complicated of social dynamics, and characteristic of perennial crop cultivation which long term cycle with long immature period as well. A strategy to improve rubber exploitation system based on technological components resulted from research to be adopted by planters. The technological components are high yielding clones with pattern of shorter cultivation, clone classification based on latex metabolism, latex diagnosis, upward tapping system which suitable with source-sink mechanism, technique of tapping panel dryness, and task management which support productivity of both tapper and plant. An objective of these trials was to construct an alternative technology of rubber plant exploitation system that was easy and safely with shortened economic life. The trial target was technological package viz. EXPEX-315 exploitation system with benefit strength such as 34%-shorter of economic life (18 years), 35 tons rubber yield per cycle, no impact on tapping panel dryness, no absolutely need skilled tappers, no increase in risk of production loss, and high quality timber product. An expected economic impact was to increase productivity around 28% with economic cycles just 18 years The trials were carried out in Sungei Putih Experimental Garden and North Sumatra rubber estates for 3-5 years and start in 2005. Research activities were conducted simultaneously viz. 1) Study of exploitation systems, 2) Analyzing of nutrition need of rubber plant, and 3) Constructing and testing of tapping equipments. It is also necessary for determining of physiological criterion of tapping mature. First and second activities would be done for 3 to 5 years, whilt the third activity would be done for 3 years. Treatments of first activity were exploitation systems viz. 1) Mc15↑ d/3.ET2.0%Ba0.5.9/y.9m/12(m), 2) Mc15↑ d/3.ET2.5% Ba0.5.6/y.6m/12(m), and 3) ½ S↑ d/3 (control) with PB 260 clone. Treatments of second activity were recommended fertilizing of immature plant with 100%, 115% and 130%, with PB 260 clone of 3.5 years old and exploitation system namely Mc15↑ d/3.ET2.0%Ba0.5. 9/y.9m/12(m).Exploitation during the first 2 months was done without stimulant application. Treatments of third activity were constructing and testing on tapping knives manually (low, medium, high) and mechanically for upward micro (10-15 cm) tapping on rubber stand variation. Generally, variables observed were rubber growth, latex production, dry rubber content, duration of latex flow, tapping panel dryness, content of sucrose, inorganic phosphates, thiols, macro/micro nutrients, quality of bark excising, standard performance of tapping by new equipments, and other physiological variables. The novel exploitation system of EXPEX-315 was expected to provide some benefits in rubber plant cultivation, mainly in increasing productivity with shorter economic life and in providing the rubber timber with high quality. The technology was supported by constructing of tapping equipments (manual or mechanical knife) in order to increase upward tapping effectiveness. Manually, it needs 3 kinds of tapping knife, namely ‘bottom’ knife, ‘middle’ knife’ and ‘above’ knife. This activity was also to design a mechanical knife which has wider capability to support exploitation system of EXPEX-315. The activity has been generated manual tapping knives namely Cungkit-SP, Sliver-SP and short Pacekung knife and a mechanical knife namely GjreG-SP for technology package of EXPEX-315. By the second year activity, data concerning EXPEX-315 exploitation system with other treatments of extra fertilizing, showed no significantly difference on growth variables (stem girth and stem thickness), dry rubber content, duration of latex flow and physiological variables (content of sucrose, content of inorganic phosphate, and content of thiol). In this period, rubber production on treatment of micro upward tapping (Mc10↑ to Mc15↑) progressively increased but still lower than control tapping (1/2 S d/3). However, on variable of production index, treatment of micro upward tapping was significantly higher than control tapping. That mean was basically potential for the exploitation system of EXPEX-315 to improve rubber productivity on the next period. By modifying the main exploitation system from Mc10↑ d/3.ET2.0%Ba1.0.9/y. 9m/12(m) to Mc15↑ d/3.ET2.0%Ga1.0.9/y.9m/12 (m), latex production significantly increased as high as the control tapping. Further modification to Sc20↑ d/3.ET2.0%Ga1.0.9/y.9m/12 (m) was higher rubber yield than tapping control, guaranteeing high rubber productivity in shortened economic life.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): economic life
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
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Sumarmadji. "Construction of Rubber Exploitation System for Shortened Economic Life: Expex-315". ไม่ระบุหน่วยงาน. ม.ป.ป.

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Construction of Rubber Exploitation System for Shortened Economic Life: Expex-315
Sumarmadji
การยางแห่งประเทศไทย
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