Effect on Yield and some Quality Characteristics of Seed Harvest at Different Stages of Maturity in Nigella sativa L.

Nigella sativa L. is a significant medicinal and aromatic plant due to the usage of both its seed fixed oil. The aim study investigate effects on yield, various yield components, essential oil content, chemical composition (2018 year) black cumin when harvesting at four different stages maturity. These were 25% (SH1), 50% (SH2), 75% (SH3) 100% (SH4) browning capsules. Two-year field experiments (2017 2018) set up according randomized complete block design with triplicate, using population obtained from Burdur province under Isparta ecological conditions.Significant statistical differences found among harvest in regards height thousand-seed weight, while no numbers capsules branches, contents experimental years. Seed components increased during stage SH3, decreased insignificantly SH1 SH4 According combined years; height, number capsules, 1000 yields, varied between 38.3-42.5 cm, 6.03-6.85 capsule plant-1, 6.50-6.91 branches 2.30-2.57 g, 307.3-542.3 kg ha-1, 0.087-0.101% 31.14-32.69%, respectively. main characterized by cymol (25.01-26.90%), thymoquinone (2.39-4.41%), carvacrol (10.12-10.41%), junipene (5.33-6.66%), Δ-3-carene (5.55-8.71%), β-pinene (2.98-3.65), trans-sabinene hydrate (8.02-11.93%) α-thujene (7.82-9.42%) 2018 season. Considering present results, SH3 was advised because higher yield. stages.