ECONOMIC MODELS RELATED TO SAP COCONUT PRODUCTION AND MARKETING IN VIETNAM

This study analyses the normal Sap coconut and embryo cultured Sap coconut models as the priority subjects on researching crop varieties adapted to drought. The data used were a large number method with models of normal and embryo cultured Sap coconut in Tra Vinh province. There was no difference between the two models as regard the average roughage time of 3.6 years. The stable age ranged from 5.6 to 5.9 years after growing with an average yield of 47 fruits per tree yearly. The investment cost for embryo cultured Sap coconut model is 2.5 times higher than that of conventional normal Sap coconut model , while the average profit is 3.9 times higher than the Sap coconut. The profit of normal Sap coconut was closely related to the number of mutant fruits/ha/year and selling price and the profit embryo cultured Sap coconut model was strongly affected by total mutant fruits/ha/year factor. There are many factors that affect the rate of copra per bunch such as the dry season and specialized planting, but the variety is an important factor that determines the copra properties of coconut and planting coconut varieties. Transplanting copra embryos for copra ratio reaches 97% during intensive cultivation. Copra production usually reaches 27% and shown only when the fruit is 11 months old. The factors that determine the quality of copra, including the dry season, varieties, organic fertilizer, and early or late harvesting, all affect the quality and thickness of copra