Agriculture, including horticulture is a mainstay of development in Tanzania. With an annual growth rate of 4.2%, agriculture contributes to approximately one quarter of the GDP and provides employment to approximately three quarters of all Tanzanian workers. It is also an area where significant achievements can and must be made for Tanzania to continue to provide sufficient food of good quality for its population that is growing by more than one million people per year. Growth of the sector is not a desired luxury but a dire necessity.