GROWTH PERIODICITY IN APPLES UNDER TROPICAL CONDITIONS
This trial-and-error discovery allows the successful cultivation of more than two million apple trees in the vicinity of Batu, near Malang in East Java, and a few smaller areas elsewhere in Indonesia. The altitude is between 600 and 1200 m, the latitude is 7°S, the minimum temperature is around 12°C. Tip-bearing cultivars such as Rome Beauty are mainly used. This culture is described in the references cited. Quantitative observations are presented by Notodimedjo et al. (1981), see p . The annual growth cycle of apple in the temperatu zones and equatorial tropics is compared schematically.