• low yield
• High cost of production
• Uneven distribution of productivity . Make product price instability The produce to market in the second season is during April - June and November - January.
• Some non-standard high output of the plant , such as residual nitrate levels exceeding the standard (25 ppm) and core browning .
• cultivars are developed very rare breed . There is deteriorating due to the mutation. Or degenerative genetic
• an imbalance between the production of agriculture. Manufacturing and industry And sale of cut-price goods abroad.