Performance of Hevea brasiliensis on Haplic Ferralsol as Affected by Different Water Regimes | Science Publications

American Journal of Applied Sciences

Shafar J. Mokhatar¹  Noordin W. Daud¹  Nazera Arbain¹ 

关键词: Hevea brasiliensis;    rubber tree;    water regimes;    water stress;    photosynthesis rate;    haplic ferralsol;    rubber clones;   

DOI  :  10.3844/ajassp.2011.206.211

学科分类：自然科学（综合）

来源: Science Publications

【 摘 要 】

Problem statement: Rubber has been grown more than a century in South East Asia, whohas been the largest producer of natural rubber. Demand of natural rubber increases steadily due toincreasing demand particularly from developing countries. Water has been a limited and invaluableresource especially in agriculture. This resource has to be used wisely and there is a need for a detailedstudy pertaining to water requirement of rubber plants. This study provides details about rubber plantsgrowth in relation to water stress. Approach: Two new latex timber clones from Malaysia RubberBoard (MRB), RRIM 2005 and RRIM 3001 were used in this study with soil from Haplic Ferralsolused as planting media. Five levels of treatment were used; plants irrigated for every 2, 5, 10 and15days and everyday which acted as control. The experimental design used was a CompletelyRandomized Block Design (RCBD) with four replications. Results: Results showed treatment wellwatered for clone RRIM 2025 (T6) had most the turgidity with high mean value in stomataconductance and chlorophyll content. RRIM 2025 also more resist to water stress compared to RRIM3001. All plants in treatments with extreme different in water regimes cannot survive and dead due tosevere stress. Conclusion: This study found rubber clones RRIM 2025 and RRIM 3001 cannot survivewith acute deficiency of water. Rubber cannot be planted in dry areas with low water regimes whichwill retard the plant growth and plant will die under severe water stress.

【 授权许可】

Unknown