Akademik Veri Yönetim Sistemi
Fresenius Environmental Bulletin, cilt.26, sa.12, ss.7451-7457, 2017 (SCI-Expanded, Scopus)
Flowering in buckwheat continues until the harvesting period. Besides, the seed ripening in buckwheat begins from the bottom branches up and continues upwards, and the flowers, green grains and mature grains, are present on the plants at harvest time. Therefore, the determination of the optimum harvest time in buckwheat is important for high grain yield and its nutritive value. The aim of the study was to investigate the effects of harvest at different stages of seed maturation (about 75, 80, 85, 90, 95, and 100% of the seed ripening) on the grain yield and the grain nutrient content of the buckwheat. The experiments were set up according to a randomized complete block design with three replications during the 2014 and 2015 growing seasons in Isparta in Turkey. The Aktas variety was used as the buckwheat cultivar. The results revealed statistically significant effects at the harvest times on the yield and nutrient contents of the buckwheat. In both subsequent years (2014 and 2015), the highest grain yield was obtained from the second harvest stage (1501.2 and 1559.4 kg ha-1, respectively), and it was followed by the third harvest stage (1422.8 and 1380.4 kg ha-1, respectively), and the grain yield decreased in the later harvest stages. The seed moisture lowed by delaying the harvest stage in both 2014 and 2015 years. The grain nutrient contents varied according to the harvest stages. Generally, N, K, Ca and Mn decreased while P, Mg, Fe, Zn and Cu increased depending on delaying harvest stage in both years. However, in terms of the grain nutrient contents, the second and third harvest stages that obtained the highest grain yield can be accepted as the desired seed nutrient quality.