harvest

The study is designed with the aim of studying the effect of different levels of selenium fertilizer and cow manure on the concentration of selenium in alfalfa. For this purpose, a pot experiment with complete randomized design in the form of a factorial experiment was carried out with five levels of selenium fertilizer (0, 5, 10, 20 and 40 g ha-1), and two levels of cow manure (Zero and 100 tons per hectare) with three replications in the greenhouse, using Lavark soil of research farm of Isfahan University of Technology in 2016. The selenium content of the samples was measured using atomic absorption device. The results of the experiment showed that the effect of selenium fertilizer levels on selenium concentration in the plant was significant in all three harvestings, but selenium concentration showed consecutive decreases in the consecutive impressions. Increasing the application of cow manure significantly increased alfalfa yield in all three harvests, and the average harvest yield was more than the second harvest, and it was more than the first harvest. The use of animal manure reduced the concentration of selenium in plants and decreased in successive consecutive. In general, selenium fertilizer without the presence of animal manure increased the concentration of selenium in the studied plant.

The main purpose of this study was to investigate the constrain related to production of flowers and ornamental plants in viewpoint of floriculturists in Mahalat county. The statistical population of study consisted of all the floriculturists (N= 420) working in Mahalat county. The sample of 100 floriculturists was selected by using Cochran formula and random sampling technique. A questionnaire was designed and employed to gather the required data. The Cronbachs alpha coefficient of the production part was (α= 0.85), harvesting part (α= 0.80) and marketing part was (α= 0.91). The validity of instrument was approved by faculty members, related experts and experts of research center of flowers and ornamental plants in Mahalat county. The result of factor analysis of constraints in production harvesting and marketing parts were divided in the seven factors including economic, capacity building toward promoting knowledge, Shortage of harvesting and processing equipment, marketing training and etc.