This study was conducted to determine the effects of different intra-row spacings (10 cm, 20 cm, 30 cm and 40 cm) and seed harvest periods (1st harvest period; 100% ripening, 2nd harvest period; 50% ripening) on seed yield and quality in Mountain spinach. The research was established in 2023 according to factorial arrangement in randomized blocks in the dry experimental field of Iğdır University Agricultural Application and Research Center Directorate. The effects of row spacing and harvest periods on the examined parameters showed statistical differences. In terms of row distance, plant height was found to be important; 2.71-2.91 m, stem thickness was found to be 14.10-17.13 mm, seed yield was found to be 390-1055 kg/da, stem yield was found to be 1311-2717 kg/da, biological yield was found to be 1701-3772 kg/da, harvest index was found to be 23.13-28.12%, ripening time was found to be 188.33-196.00 days and seed crude protein ratio was found to be 16.26-17.13%. In terms of harvest periods, plant height was found to be 2.77-2.87 m, stem thickness was found to be 14.28-16.70 mm, seed yield was found to be 508-811 kg/da, stem yield was found to be 1757-2044 kg/da, harvest index was found to be 19.07-31.41%, thousand-grain weight was found to be 5.05-6.63 g, the ripening period was found to be 182.92-201.42 days, seed crude protein ratio was found to be 16.51-16.99%, seed NDF ratio was found to be 33.07-37.51%, seed ADF ratio was found to be 20.43-23.88% and stem ADF ratio was found to be 49.56-51.49%. As a result of the research, it was revealed that the highest seed yield and quality values were obtained from applications sown with narrow row spacing (except seed crude protein ratio) and harvested at 50% maturity.
Enişte et al. (2026) studied this question.