An expected increase in production that Thailand is just small
amount from the new area in the North and Northeast which will be
able to tap from 2011 onwards, it may not achieve the average yield
target of 1.875 metric tons/ha/year. The yield productivity may change
from time to time affected by the climate variables and unexpected
seasonal factors of drought and heavy rain. Therefore more study in
depth on climate change affecting NR production is required for all
part of the Southeast Asian countries.