EFFECTS OF DIFFERENT DOSES AND TYPES OF FERTILIZERS ON GRAZING TIME AND RANGELAND QUALITY

摘要

Experimental trails have been conducted between March 2010 and January 2012 in Gerlengec village of Biga Districtsituated in Canakkale Province, Turkey. In this study, control along with 5 kg N/ha 4M (chelate organo-mineralfertilizer, 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 anddoses 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 cmin 2010 and 2011, respectively by increasing the grass layer of the rangeland from 1st March to 30th May. At the sametime, 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 and2011, respectively. An increase, both in the grass layer height as well as the fodder production has been acceleratedbetween 10 to 20 April. The application of fertilizers has none significant level of affect to the grazing maturity time ofrangeland. The effects of fertilization on legumes in rangeland were important in general while its impact on the speciesof grains and other related families has mostly been appeared in the months of summer and autumn. According to thetwo-year average results, legumes that found in plant vegetation were increased by the application of compositefertilizer while decreased due to 4M fertilizer. All of the fertilizers showed an increase in gramineae but reduced thespecies from other families. All types and doses of fertilizer showed an increase into the quality level of rangeland ineach of two years, but an extreme increase of 10 kg N/ha has been occurred in those plots which were applied to 4Mfertilizer. According to this, grazing should be started in 20th of April in similar rangelands and 5 kg of nitrogen shouldbe applied to per hectare for improving the quality of rangeland.