effect of free amino acids on the yield quality and quantity of forage varieties gole-sefid (vicia panonica) in rainfed conditions

improve forage quantity and quality using organic and biological fertilizers production of important needs in dryland farming systems of the country. in this study the effects of foliar application of four different combinations of amino acid four different time steps were germinated plant growth, stem elongation, flowering and spraying all three steps above with the control treatment was carried out total of 17. the experiment based on randomized complete block design with three replications during two crop years 1388-1390 were carried out in maragheh agricultural research station. the results of combined analysis showed that the main effect of forage dry biomass yield and year×treatment interaction were significant at the 1% level. the year×treatment interaction qualitative indicators such as nitrogen, phosphorus and potassium in the dry matter were significant at the 1% level. mean comparison showed the highest biomass yield of 3555 kg/ha in foliar amino acid composition abbreviated am resulted in a significant increase compared with the 998 kg per ha. also the nitrogen content of the forage dry matter 3.4 percent in the foliar application of amino acids, comparison to control am 0.2 percent has increased. overall, it was concluded that foliar free amino acids in comparison to the control (no spray) in terms of quantity and quality of dry land positive effects are often significant.