It is not simply because of its geographical position as a tropical country that thailand produces so many different kinds of fruits of good quality. The tropical climate is certainly favourable to the growth of vegetation. But there are other factors that have contributed to the rich production - the fertile soil, the introduction of new species from foreign countries, the continued efforts to improve the qualiy of fruits by scientific methods, and the comparative length of thai territory, which extends right into the subtropical zone, making it possible to grow fruits native to places of higher latitudes