Good morning Does anyone know the root zone depth and MAD of Rubber, Papaya and Tea for an irrigation research study? Thanks
Papaya need a depth of 7 to 10 feet
Rubber it can go to depth of 12 to 18 inches
How far , the spatial distribution of roots is affected by genetic traits than environmental factors , including the nature and properties of soil , besides the difference arising out of pot experiment versus field study...
MAD = usually 50% from readily available water content of the root zone
Root zone depth = This is a crop specific factor, you can find it from text books . Eg: FAO 56 irrigation and drainage.
Root zone depth of Rubber is not commonly available. Go to the Rubber research institute web sit of Sri Lanka for information about the root zone depth. They have nearly 100 year research collections.
Usually most trees have root zone depth (beneath the ground part) equal to upper ground part.
Root zone depth is not a fixed criterion , it could vary a great deal . We need an empirical relation to be developed accomdating soil properties , management practices and most important of all, changes in distribution pattern of roots over different seasons of a year. It is a more of a regional exercise rather than a generalised eercise. ...
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