Criteria determining of general climatic favourableness for the growth of plum in Serbia [Yugoslavia]
2000
Vulic, T. (Poljoprivredni fakultet, Beograd - Zemun (Yugoslavia))
The results of this research showed that light and precipitation in the specific climatic conditions of Serbia (Yugoslavia), on a long-term basis, do not represent limiting factors for the successful plum growth in any part of its territory. Therefore, light and precipitation indices cannot be held as favourableness criteria. Great parts of Serbia (Yugoslavia), however, lack thermal energy, so thermal indices - normal air temperature per year and normal vegetative air temperature, proved to be very important criteria of general climatic favourableness of an area for plum fruit production. Vegetative isotherms (April - September) of 15.0 and 17.0 deg C represent borderlines of the three global zones of different levels of this favourableness in Serbia (Yugoslavia): unfavourable, medium favourable and favourable.
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