With its high protein content, forage soybean is an important legume roughage that should be included in animal rations. However, the traditional silage production of pure soybean as forage is limited by its high protein content. The aim of the study was to determine the effect of the duration of storage and soybean variety on some quality parameters and color change in pure soybeans silage. Two soybean forage varieties (Yemsoy and Yesilsoy) as the main factor were harvested in the appropriate harvesting period and with an appropriate technology, and after wilting the soybean plants were ensilaged without any additives in small bales of 40-50 kg. The bales were stored for 5 lengths of storage (20, 40, 60, 80, and 100 days), which was the second experimental factor. The silage samples as 3 replications were collected at the end of the storage period to evaluate Dry Matter (DM), pH, Crude Protein (CP), Acid Detergent Fiber (ADF), Neutral Detergent Fiber (NDF), Relative Feed Value (RFV), Digestible Dry Matter (DDM), Dry Matter Intake (DMI), Fleig Score (FS) and CIELAB color scale (L, a, b). The data from 2 years were processed statistically in randomized blocks according to a split plot design. No statistical difference between the duration of storage and varieties in terms of RFV was observed. However, it was determined that the pH value was statistically lower (p

27.4.2022