the dominant agricultural land uses are included of wheat farming in the kermanshah providence in the northwest of iran. the objective of this paper is analyzing of topoclimatic zonning of the wheat dry farming areas based on overlying the climatic and topographic character tics. to achieve the exact date of stages of rain-fed wheat growing in different areas of the province, the degree-days te...

Areas abandoned for various reasons are widespread on Earth, with a significant proportion in some regions of Europe. Our knowledge vegetation dynamics lands is incomplete, part because research comparing types from different cultivars limited. This paper compared the textural and structural changes previously extensively treated vineyards, arables, grasslands over 30-year timescale secondary s...

abstract sunflower is one of the most important oilseeds in the world which has adaptation to high temperature. however, its cultivation in many different areas is neither desirable nor economical. considering that sunflower is a crop that is irrigated by adequate river water in the province of isfahan, temperature is a determining role in the final revenue. appropriate temperatures are shown a...

between of effective factors in agricultural crops production, climatic conditions is an important task from the view of environmental variables. on the other hand the basic in agricultural development is having detailed knowledge of the environmental characteristics in any place and applying specific management. saffron as the world's most valuable agricultural and medicinal product is among t...