Experimental trails have been conducted between March 2010 and January 2012 in Gerlengec village of Biga District situated in Canakkale Province, Turkey. In this study, control along with 5 kg N/ha 4M (chelate organo-mineral fertilizer, 5-10-0), 10 kg N/ha 4M, 5 kg N/ha composite (20-20-0) and 10 kg N/ha composite of five different types and doses of fertilizer were used. Height of the grass has been increased from 10.0 cm to 110.9 cm and 22.8 cm to 113.1 cm in 2010 and 2011, respectively by increasing the grass layer of the rangeland from 1st March to 30th May. At the same time, the fodder production has been increased from 84.0 kg/ha to 494 kg/ha and 95.8 kg/ha to 631.1 kg/ha in 2010 and 2011, respectively. An increase, both in the grass layer height as well as the fodder production has been accelerated between 10 to 20 April. The application of fertilizers has none significant level of affect to the grazing maturity time of rangeland. The effects of fertilization on legumes in rangeland were important in general while its impact on the species of grains and other related families has mostly been appeared in the months of summer and autumn. According to the two-year average results, legumes that found in plant vegetation were increased by the application of composite fertilizer while decreased due to 4M fertilizer. All of the fertilizers showed an increase in gramineae but reduced the species from other families. All types and doses of fertilizer showed an increase into the quality level of rangeland in each of two years, but an extreme increase of 10 kg N/ha has been occurred in those plots which were applied to 4M fertilizer. According to this, grazing should be started in 20th of April in similar rangelands and 5 kg of nitrogen should be applied to per hectare for improving the quality of rangeland.