Root growth of the timber.The roots are an important part of the process to more Plant Physiology (Turner and of the Board of 1985, and by 1985, Gollan and sayan, 2534 (1991)) The Foundation is responsible for helping prop up the stems absorb water and nutrients from the soil. They also play an important role: Plant Physiology, the occurrence of root growth and root's death. Directly affect the growth of different parts of a plant and have a relationship with the growing amount of Russell (1977) showed that the growth of roots and shoots are in a constant environment, but when there is a variance of the environment has resulted in the distribution of dry weight variance in paradise.And stems In addition, the environment greatly influence the growth of plants, which consists of factors that affect the growth and spread of roots is soil in plant genetic reduction of areas the soil is alkaline-acid. The temperature of the Earth. Fertility of the soil. Water or moisture content of the soil and plant nutrient consumption Lily jewel (2549 (2006)) to spread the study of distribution and growth of root tube. Para 10-the original seed was found to be within the root system, Prince of songkla University strong and spread distribution. The growth was better than beans from a mixed open in which 600 RRIM group those seeds are suitable for use as the root causes, and there may be resistance to destruction of the fungi as well. In addition, to take advantage of genetic diversity seems to be set. One way to control the outbreak the roots. In a study of the growth and strength of timber roots. There have been develop appropriate. Using nonviolent methods most plant root (non-destructive method) in the evaluation of root depths of timber; Naret (2551 (2008)) have developed a method of using Acrylic pipes buried in the ground at the 1-meter deep root system RRIM600 species, timber and shoot with a digital camera attached to an aluminum core that conform to the depths of the Earth. Shoot all the depths Apply images to the root length is variable, and then painting in front of the cut root density, which found that a good evaluation can have a relationship with soil penetration method directly. This method is referred to as the measurement using the how solo and electron technique Schroth mini Sinclair (2003) uses mini-SEO-Tron. to estimate the growth of plants in conditions of transformation and is accepted because it can quickly measure done continuously. Labor-saving (Rytter and Hansson, et al., 1996; 2004; Ponti Mainiero and Kazda, 2006) how is the mini electron solo better than other methods, such as studying the roots of soil penetration (Heeraman and Juma, 1993; et al. 1996; Dickmann, Ephrath et al., 1999) a study of soil cutting pages from (Caldwell and Verginia, 1989) and the use of plants (Kirkham et al., 1998)
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