Özet:

This research was conducted to determine nutritional values of seeds and straws of 4 different forage peas (GAP Pembesi, Kirazlı, Özkaynak and Taşkent) cultivars in 6 different sowing times (late October, early November and late November early March, late March, early April,) under the Iğdır ecological conditions. The research was established according to randomized complete block design in split plots with three replications in the experimental area of Iğdır University Agricultural Application and Research Center Directorate in 2018-2019 and 2019-2020 for 2 years. In the study, forage pea's crude protein ratio in seed (seed-CP), straw crude protein ratio (straw-CP), straw neutral detergent fiber (straw-NDF), acid detergent fiber (straw-ADF), dry matter digestibility (straw-DMD), dry matter intake (straw-DMI), digestible energy (straw-DE), metabolic energy (straw-ME), and relative feed value (straw-RFV) were determined. Seed-CP ratio, straw-CP ratio, straw-NDF ratio, straw-ADF ratio, straw-DMD and straw-RFV value have been found to reach the best values in early April sowing. Among the varieties, the best feed values were determined in the Özkaynak variety. According to the results of the research, it was determined that Özkaynak variety should be sown in early April in order to obtain the best feed values in seeds and straw in the ecological conditions of Iğdır.

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