the main objective of this research was to study the factors affecting the sustainability level of greenhouse cultivation system in jiroft and kohnuj region the research method of the study was a descriptive-correlational one. the statistical population of the study consisted of all the greenhouse owners in jiroft and kohnuj region in six rural districts (n=1862). according to the cochran'...

the effects of agricultural information on the technical knowledge of the greenhouse owners in south khorasan province are dealt with in this study. research a descriptive-correlational methodology was ployed, and in terms of time, it was limited to the activities of the elements of knowledge and agricultural information as obtained from greenhouses during 2009. the study population consisted o...