Studying role of Temperatureatbecoming forage soybeanin Iran (Case study,Gorgan)

ABSTRACT: It is clear that determination of crop kind of every area and agriculture programming of areas depend on climate. One of the climate indicator characterizations is temperature change. Direct effect of temperature factor over distribution and dispersion of plants at earth is a certain matter .Susceptibility of plants as compared with low and high and optimum temperature and itʹs effect on increasing and decreasing of growth and production speed of plants are scientific facts that has attracted most of scientists of herbaceous sciences. Soya crop is replaced as second prevailing cultivation after harvest of wheat and barley, and other spring harvests in Golestan plain. In this project, the researcher has tried that studying by using scientists views, work analysis, determination of occurring probability high temperatures of plant endurance, field operations and offering proposals of absolutes role of temperature degree at stages of Soya growth and production . Also quality of temperature effect on Soya crop cultivation and itʹs role at performance increasing and decreasing and correct management acts has been from view point good date choice during agricultural operations.