Oranges grow over a wide range of soils but light, well-drained (sandy) soils are most ideal. For good production oranges require well-distributed rainfall or supplementary irrigation throughout the year. A good source of water is therefore essential in orange farming. Water requirements vary according to weather conditions, but the ideal range is between 450mm – 2,700mm per year.
Oranges can be grown from as low as sea level to 200m above sea level. Areas of low humidity are most ideal. Such a climate is important for reduced disease intensity and for acquiring good orange color. A dry hot day, cool at night climate also favors good color development. Citrus requires temperature ranges from 13oC-38oC. Optimum temperature is 25oC-35oC. Extremely high temperatures may be harmful especially during flowering or if cool temperatures are followed by a hot period. Damage occurs in the form of flower and leaf drop. Wind can also cause serious damage to orange trees and fruits. Hot dry wind will often scorch trees by drying young leaves. Winds of high speeds will scar fruits and cause fruit drop. Where winds are a problem, windbreak shelters should be planted
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