Introduction. Agriculture is considered a critical sector in the world economy. It contributes 24% of global Gross Domestic Product and provides employment to 1.3 billion people or 22% of the world's population. In many of the developing countries, increasing agricultural production has been one of the most important priorities for agricultural development programs. The agricultural is among the major sectors of Iran's economy and 14 percent valueadded benefit is belonging itself (Kohansal et al, 2013). Iran contains 12 different types of climate, and while much of its land area is dry and cannot be cultivated, each climate and its corresponding region contribute to a country that is able to grow many varieties of crops. Although 80% of the revenue from Iran’s exports is from petroleum, the remaining 20% is shared with the fruits, nuts, and other horticultural crops.