Wednesday, December 14, 2005

Brown bast/TPD in detail

Formation of rubber roots by sleri
The picture shows the formation of new roots by slery where grasses was not available due to soil degradation. The highest place behind a tree needs organic matter to grow the roots. The soluble organic matter will flow to the lower place where earth worms can maitain the soil more fertile.
Biogas slery for Rubber trees
This BIOGAS plant completed by Biotec. This plant is able to maintain drainage waste with a safety precaution as water jacket system. Cow dung, waste water of rubber sheets and drainage waste without bathroom water can be used in it. Sufficient NPK are avilable in the slery for the growth of rubber trees. But the DRC will increase due to the availability of organic matter. In organic peat soil deficiency of magnesium will create Brown bast. Thus the application of magnesium is necessary to avoid Brown bast.
Main parts and functions of stem

The rubber tree expands with secondary growth, new phloem forms on one side of the cambium tissue, and new xylem on the other. This secondary xylem is known as rubber wood. Phloem is the path of carbohydrates from leaves to root end through the inner part like Artery in the human body. Between the cork cambium and phloem latex vessels are available with a flow from root to leaves like Vain in the human body. The deficiency of carbohydrates will dry the phloem at tapping period and cork cambium will more thicker in first stage without latex vessels.

Will be corrected and completed as soon as possible.

Monday, August 15, 2005

Brown bast/TPD

Due to the deficiency of Magnesium brown bast disease will appear on the bark as necrocis (dead tisue on bark). Magnesium is the carrier of phosphurous from the root to leaf through zylem which is a need for flowers. Magnesim is the metalic constitent of chlorophyll. For photosynthesis oxygen and hydrogen from soil and the carbon from carbon di oxide available in the air are required to prepare carbohydrates with the help of sunshine. This carbohydrates are flowing through phloem from leaf to root. Phospharous is the main item to grow roots. The cross section of tree is available in this page.
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My findings other than this will be published after November due to the International work shop on Brown bast/TPD with the participation of IRRDB, ANRPC and RRII.