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The Study On Clones And Four Different Planting Densities For A Short Planting Cycle Of Hevea In Malaysia
Mohd Nasaruddin Bin Mohd Aris - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): The Study On Clones And Four Different Planting Densities For A Short Planting Cycle Of Hevea In Malaysia
ผู้แต่ง / หัวหน้าโครงการ (EN): Mohd Nasaruddin Bin Mohd Aris
บทคัดย่อ (EN): There are two types of clones suitable for a short planting cycle i.e. latex timber clones and timber clones. In addition, results obtained from the rubber forest preliminary clone trial showed that some of the 1995 Hevea germplasm collections were found to be promising. These materials will be further tested prior to recommendation. Four planting densities viz. 500 plants/ha, 1000 plants/ha, 1500 plants/ha and 2000 plants/ha are being studied for rubber forest plantation. Analysis of variance for girth measured at 150 cm (VR = 10.0, p<0.05) and 60 cm from the ground (VR=10.7, p<0.05) showed that there were significant differences among the different planting densities. In order to examine the trend existed with regard to different planting densities and to locate the specific differences that might account for the significance, the trend comparison procedure was used where the sum of square of planting densities was partitioned. The highest degree of polynomial that could be tested was cubic. The results indicated significant linear response indicating that girth decreased proportionately with increment of planting density. The results obtained from a two-way analysis of variance using pooled data of both clones showed that there was significant difference between clones (p<0.05). This was also found for the planting densities. The results obtained from comparison between pair of treatment means using the least significant difference test for RRIM 2020 showed that mean girth at 150cm and 60cm from the ground for planting density of 500 plants/ha were significantly different than that of 1000 plants/ha, 1500 plants/ha and 2000 plants/ha. The test carried out on pooled data indicated that except for planting density pairs of 1000 plants/ha and 1500 plants/ha, there were significant differences among other pairs of treatment means compared. The least significant difference test for RRIM 2025, however, showed that only the girth measured at 150cm and 60cm from the ground for planting density of 500 plants/ha and 1500 plants/ha were significantly different than that of 2000 plants/ha. Girth measurement at the ten year after planting (June 2004) was made in observation plots planted with plants at the density of 1111plants/ha in RRIMinis Niah, Sarawak. As far as wood volume is concerned, the cylindrical wood volume ranged between 0.08 m3 /plant and 0.21 m3 /plant. Treated and kiln dried sawn timber should be considered as far as value added is concerned in rubber wood production.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): short planting cycle
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
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Mohd Nasaruddin Bin Mohd Aris . "The Study On Clones And Four Different Planting Densities For A Short Planting Cycle Of Hevea In Malaysia". ไม่ระบุหน่วยงาน. ม.ป.ป.

Mohd Nasaruddin Bin Mohd Aris . "The Study On Clones And Four Different Planting Densities For A Short Planting Cycle Of Hevea In Malaysia". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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The Study On Clones And Four Different Planting Densities For A Short Planting Cycle Of Hevea In Malaysia
Mohd Nasaruddin Bin Mohd Aris
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
Promising latex timber clones of Hevea brasiliensis evolved by ortet selection Evaluation of some clones (Hevea brasiliensis) in a small scale trial in the southern part of Guatemala A Study on Carbon Sequestration in Various Plant Parts of Two Hevea Clones Planted in Four Planting Densities Predicting the distribution of rubber trees (Hevea brasiliensis) through ecological niche modelling with climate, soil, topography and socioeconomic factors Functional analysis of HbMlo12 in powdery mildew infection and stress response in the rubber tree Hevea brasiliensis Muell Arg. Some Considerations Concerning the Yield Potential of Some Clones (Hevea brasiliensis) Identification of Resistance of Hevea brasiliensis Clones to Corynespora Leaf Fall Disease Recombination Breeding of Hevea brasiliensis in India: Clones Evolved From the 1983 Hybridization Programme Biometrical Analysis of Carbon for RRIM 2020 and RRIM 2025 Clones Planted in Different Planting Densities Mechanised Land Preparation for Hevea Planting and Plant Growth: A Case Study
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