สืบค้นงานวิจัย
INFLUENCES OF LOW FERQUENCY UPWARD TAPPING SYSTEMS ON HEVEA BRASILIENSIS CLONE PB 260
Truong Van Hai - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): INFLUENCES OF LOW FERQUENCY UPWARD TAPPING SYSTEMS ON HEVEA BRASILIENSIS CLONE PB 260
ผู้แต่ง / หัวหน้าโครงการ (EN): Truong Van Hai
บทคัดย่อ (EN): A study of low tapping frequencies (d4 and d5) with different ethephon stimulation (ET 2.5% a.i) frequencies (8 times and 16 times per year) compared to the control system (d3, 8 times per year) was conducted on clone PB 260 at plot 19, Ben Cui plantation, Tay Ninh Rubber JSC (TRC) from 2010 to 2013, Vietnam. The results showed that as the tapping frequency decreased from d3 to d4 and d5, the mean individual yield (yield per tapping per tree g/t/t) increased by 21% and 39%, respectively. Meanwhile, increasing the stimulation frequency from 8 times per year to 16 times per year caused the mean individual yield to increase 8%. Land productivity (yield per hectare per year kg/ha/year) of d4 tapping systems achieved 96-103% of the standard system while d5 tapping systems only reached 86-90%. In order for the yield to attain 103% and 90%, ethephon stimulation (ET 2.5%) was applied 16 times per year (twice a month). The same stimulation frequency applying for d3 tapping obtained the highest land productivity with the average yield of 2,800 kg/ha/year, increased 11% more than the traditional tapping system. Furthermore, the dry rubber contents (DRC) of low frequency tapping systems were 1-2% higher than those of d3 tapping systems. In regard to the latex physiology parameters, while the sucrose content tended to decrease in the fourth year of upward tapping, thiols, inorganic phosphorous and the total solid content (TSC) showed no significant change. The rate of the tapping panel dryness (TPD) was relatively high in all of the tapping systems (including the standard system), varied from 8.8% to 12.2%. There was no indication of a relationship between the stimulation frequency and the TPD incident, thus, this could be explained as a characteristic of the clone PB 260. In addition, bark consumption could be decreased with the reduction of tapping frequency. With the change of tapping frequency from d3 to d4 or d5, labour need for harvesting was reduced by 25% and 40% respectively.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): stimulation
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

การอ้างอิง

Truong Van Hai. "INFLUENCES OF LOW FERQUENCY UPWARD TAPPING SYSTEMS ON HEVEA BRASILIENSIS CLONE PB 260". ไม่ระบุหน่วยงาน. ม.ป.ป.

Truong Van Hai. "INFLUENCES OF LOW FERQUENCY UPWARD TAPPING SYSTEMS ON HEVEA BRASILIENSIS CLONE PB 260". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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INFLUENCES OF LOW FERQUENCY UPWARD TAPPING SYSTEMS ON HEVEA BRASILIENSIS CLONE PB 260
Truong Van Hai
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
Impact of The Reduction of The Tapping Frequency On the Agronomic and Physiological Parameters of Clone PB 260 of Hevea brasiliensis in the Centre West of Cote D’ ivoire in Order to Make Up For The Sh THE YIELD AND LATEX PHYSILOGICAL PARAMETERS ON D3 AND D4 TAPPING SYSTEMS OF PB 260 CLONE AT SOUTHEAST REGION IN VIETNAM Influence of Various Tapping Systems on Rubber Yield of Two Clones RRIV 3 and PB 260 at South-East Region in Vietnam Latex Harvesting Technologies Adapted to Clones IRCA18, IRCA 111, IRCA 130, PB 235 and PB 260 of Hevea brasiliensis (Rubber Tree) of the Class to Active Metabolism in South-Western Côte d’Ivoire A novel technique for the production of rubber rootstocks (PB 260) via seedling macrocuttings Effect of ethylene stimulation and wounding to the expression of three members of the multigene family encoding ACC oxidases in Hevea brasiliensis Assessment of Low Frequency Tapping Systems with Stimulation on Hevea in Southern Thailand Carbohydrate Variation of Hevea Induced by Tapping Systems Effect of Tapping Systems and Simulation on Clone RRIT 251 Alternative Tapping Systems for RRIC 100 Clone From Opening
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