Bülent YAĞMUR, Bülent OKUR and Nur OKUR (2021) “The Effect of the Applications of Humic Acid and Potassium on Content of Nutrient and Oil of Seed and Yield of Sunflower”, ISPEC Journal of Agricultural Sciences, 5(1), pp. 156-167. doi: 10.46291/ISPECJASvol5iss1pp156-167.