DETERMINING THE FORAGE YIELD AND CERTAIN CHARACTERISTICS OF SOYBEAN (GLYCINE MAX.L.) VARIETIES WITH DIFFERENT SOWING DATES

This research was conducted at Gumushane University, in the field of application of Gumushane University Vocational School of Higher Education during 2014-2015. The research was carried out in 3 replications according to the exact blocks trial pattern of chance during the season of breeding between 2014 and 2015. in the research Nova, Arisoy, A-3127, Sa-88, Ataem-7, Bravo, Yesilsoy and Yemsoy varieties were used, and different three sowing dates (1 April,15 April, 30 April). According to the results, the highest values in terms of green grass and ADF values were given by Yesilsoy cultivar. Yesilsoy cultivar took the first place with 12123.3 kg / ha(-1) in terms of green grass yield. In terms of hay yield, Arisoy cultivar gave the highest value with 5003 kg / ha(-1). The highest values in ADF, NDF and Crude protein content were Bravo 37.51%, Ataem-7 37.48%, Bravo 46.72%, Yesilsoy 46.48%, Bravo 13.96%, Ataem-7 13%, 95 respectively gave the highest values. In terms of sowing time, sowing time of 1 April gave the highest results among the parameters examined. Therefore, while sowing time on April 1 was determined as the most suitable planting, Nova, Arisoy, Ataem-7, Yesilsoy and Yemsoy varieties were the prominent varieties in terms of green, dry grass and crude protein.