According to Nguyen Le Rights (2002). The research was done on the basis of census data, the production of 120 farmers planting sugarcane in Tan Chau district, Tay Ninh province, Vietnam. The author has functional sugarcane production estimates as a function of Cobb-Douglas. In that turn sugar cane productivity is dependent, influenced by factors such as: Anatomy, animal Manure, thuốtc Kali, except the grass, lime, the number involved agricultural extension training, tree size.
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