สืบค้นงานวิจัย
WATER STATUS AND RADIATION ENVIRONMENT IN RUBBER (HEVEA BRASILIENSIS) SYSTEMS: A COMPARISON BETWEEN MONOCULTURE AND MIXED RUBBER-ACACIA MANGIUM PLOTS
Ni matur Khasanah - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): WATER STATUS AND RADIATION ENVIRONMENT IN RUBBER (HEVEA BRASILIENSIS) SYSTEMS: A COMPARISON BETWEEN MONOCULTURE AND MIXED RUBBER-ACACIA MANGIUM PLOTS
ผู้แต่ง / หัวหน้าโครงการ (EN): Ni matur Khasanah
บทคัดย่อ (EN): Interplanting of Acacia mangium within Hevea brasiliensis plot may be an attractive option for smallholder rubber farmers in the tropics to increase their land productivity. Indeed, economic prospect for timber is good as timber resource in natural forest has become severely depleted and particularly so in Sumatra where this study is conducted. A. mangium being a very fast growing tree species, careful timing and management of A. mangium is probably required to reduce light competition with rubber trees. Furthermore a large portion of rubber planted area in Indonesia is subject to two or more dry months during which rubber may shed its leaves and stops its growth. Competition for water use between trees species in periods of low rainfall may be another constraint to growth of the rubber tree. When soil water is gradually depleted trees can maintain their transpiration rates if they can continue to function at more negative plant water potential. Al equal rooting patterns, the trees with the almost negative plant water potential will win the contest for remaining soil water. This study compares a series of growth and physiological parameters measured on rubber trees grown either in monoculture (6x3.3xm and 6x2x14 m) or associated with A. mangium (3x3x17 m). In the fifth year after plot establishment, variation in the growth of rubber was analyzed in relation to leaf water potential and light interception by canopy. Leaf water potential was used as an indicator of plant water status, but also as indicator of competitive strength. Predawn leaf water potential of rubber trees grown in mixed systems or in monoculture plantation did not significantly different in the beginning of dry season. However, the girth and canopy size of rubber trees grown in mixed systems with A. mangium was significantly smaller. Leaf water potential of A. mangium was more negative than that of rubber in the mixed system, but not as negative as that in a monoculture of A. mangium (where A. mangium trees were competing conspecifically rather than with rubber). Better growth of A. mangium in the mixture than in monoculture can thus have above as well as belowground explanations. The net effect of A. mangium on depressing rubber growth, however, is likely to be primarily caused by shading.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://shkola.of.by/water-status-and-radiation-environment-in-rubber-hevea-brasili.html
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): tree growth
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
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การอ้างอิง

Ni matur Khasanah. "WATER STATUS AND RADIATION ENVIRONMENT IN RUBBER (HEVEA BRASILIENSIS) SYSTEMS: A COMPARISON BETWEEN MONOCULTURE AND MIXED RUBBER-ACACIA MANGIUM PLOTS". ไม่ระบุหน่วยงาน. ม.ป.ป.

Ni matur Khasanah. "WATER STATUS AND RADIATION ENVIRONMENT IN RUBBER (HEVEA BRASILIENSIS) SYSTEMS: A COMPARISON BETWEEN MONOCULTURE AND MIXED RUBBER-ACACIA MANGIUM PLOTS". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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WATER STATUS AND RADIATION ENVIRONMENT IN RUBBER (HEVEA BRASILIENSIS) SYSTEMS: A COMPARISON BETWEEN MONOCULTURE AND MIXED RUBBER-ACACIA MANGIUM PLOTS
Ni matur Khasanah
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
Effect of Temperature Constraints on Photosynthesis of Rubber (Hevea brasiliensis) Lipid composition of Hevea brasiliensis latex and dry rubber: characterization and relation with some physical properties Chloroplast DNA Microsatellite Differentiation in Cultivated and Wild Rubber Tree (Hevea brasiliensis) Elephant Dung as Potting Medium for Root Trainer Plants of Rubber (Hevea brasiliensis) Evaluation of Rubber (Hevea brasiliensis) Modern Clones under Certain Stressful Climatic Conditions of Odisha Development and Promotion of Rubber (Hevea brasiliensis Muell Arg.) Towards Commercialization in Oriental and Occidental Mindoro Identification of Rubber Clones (Hevea brasiliensis) Using Inter Simple Sequence Repeat (ISSR) Markers Investigation on a new rubber based farming system in China RUBBER BASED AGROFORESTRY SYSTEMS (RAS) AS ALTERNATIVES FOR RUBBER MONOCULTURE SYSTEM Drought and Trunk Phloem Necrosis (TPN) Effects on Water Status and Xylem Sap Flow of Hevea brasiliensis
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