Biological constraints and economic constraint are the most serious constraints while physical constraints and social constraints are lesser constraints. This indicates that the government should concentrate on the economic and biological aspects in the development of small holding sector. In the Table 4, it is shown that small holding rubber-integrated farming system (R6) and small holding rubber-fruit
tree farming system (R4) are faced with many constraints, especially economic constraints such as shortage of labor, price and quality of production and deficient capital investment, and biological constraints such as disease and pests due to, these systems are more management and intensive practice