Change, root growth timber in the year. Using techniques mini Raizo Tron. Open trials rubber RRIM 600 were aged 9 7 x 3 meter spacing of 3 plants to study the growth and change of the root timber in the rainy and dry seasons. Logging of timber every 2 weeks for a period of 17 months for the record contains. The life and death of roots Soil moisture Leaf area index Results from the analysis of patterns of growth Logistic growth curve showed that after installing the pipe mini Raizo Tron with a length of 100 and 150 cm roots are growing back quickly, 2 and 3 months, respectively, of its changes. The root of the year The pipeline, with a length of 100 cm, with a growth of root surface area. (Depth 0-10 cm) pipe section with a length of 150 cm, the maximum root growth timber. At a depth of soil 0-70 cm on the month in May 2557 found that the roots in the soil at a depth of soil than 10 cm, the root growth increased significantly, and found that soil moisture is a factor. that affect the growth of roots. When soil moisture increased Roots to grow up. While the humidity down roots are dead and root volume decrease. Also found Roots are growing up after the new rubber.
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