Tempro- Spatial Study of Hailing in the Seasonal Calendar of Crop Production Case Study: East Azerbaijan Province

Hail is one of the crucial climatic extremes in agriculture. The extent of damage caused by hail is different depending on the type of crops, hail size, its shower size and the phonologic stage of plants. Understanding the methods of managing this crisis depends on our knowledge about the frequency of hailing and its tempro-spatial distribution in important agricultural areas. This study aims to identify these factors in order to design a plan for reducing hail damages in the vulnerable areas of the East Azerbaijan Province. For this purpose, the daily minimum temperature data were collected from 6 stations in East Azerbaijan Province between 1987-2006 by the measures from April to September. The basis was seasonal calendar of crop production. Results revealed that the highest amount of hailing happened in the north east of the Province (Ahar district), while the least was in the North West (Jolfa district). April and September showed the highest and the least amount of hailing respectively.