The effect of different harvest dates on the yield and quality properties of rosemary (Rosmarinus officinalis L.) plant

Abstract

The purpose of this research carried out in 2018 under Eskişehir ecological conditions was to determine the effect of six different harvest dates (T1: 16 August, T2: 29 August, T3: 14 September, T4: 28 September, T5: 15 October and T6: 31 October) on the yield and quality properties rosemary (Rosmarinus officinalis L.). The experiment was established according to a randomized complete-block design with four replications. The composition of the essential oil obtained by the hydro-distillation from the dry leaves of the rosemary plant was analyzed by GC-MS. In the experiment carried out, the mean values of plant height (cm), fresh herb yield (t ha -1 ), dry herb yield (t ha -1 ), dry leaf yield (t ha -1 ), essential oil ratio (%), essential oil yield were determined as 61.87 cm, 15.78 t ha -1 , 5.80 t ha-1, 3.55 t ha -1 , 0.69% and 23.92 l ha -1 , respectively. In the essential oil samples obtained from the harvests made at different dates, 35 different components were identified. The values of the camphor, 1-verbenone, α-pinene, borneol and 1,8-cineol components determined as the main component in the analyzed essential oil samples ranged from 11.67 to 14.78%, from 8.47 to 11.77%, from 8.74 to 11.82%, from 8.61 to 11.12% and from 7.01 to 9.07%, respectively.

Effect of Different Row Spaces on Yield and Quality of Anise (Pimpinella anisum) under Eskisehir Ecological Conditions

“…As with other cultivated plants, the yield and quality of the product to be obtained in medicinal aromatic plants results from the interaction of the genetic makeup of the plant material with the ecological conditions of the region and agronomic applications [13,14,15,16,17,18]. For this reason, it is of great importance to determine the most appropriate agronomic applications by the researches that will be carried out in order to produce high yield and quality products in a region.…”

Farklı kurutma sürelerinin Zufa/Çördük Otu (Hyssopus officinalis L.) bitkisinin verim ve uçucu yağ oranı uzerine etkisinin belirlenmesi

“…Dikotil olan çördük otu bitkisi; kuvvetli bir kazık köke sahiptir [9,10]. Dip kısmı yarı odunsu ve çokça dallanan bikinin boyu 100 cm'e kadar ulaşabilmektedir [3,9,10,11].…”

“…Dikotil olan çördük otu bitkisi; kuvvetli bir kazık köke sahiptir [9,10]. Dip kısmı yarı odunsu ve çokça dallanan bikinin boyu 100 cm'e kadar ulaşabilmektedir [3,9,10,11]. Fakat kültürü yapılan çördük otu bitkilerinde bitki boyu 30-60 cm arasında değişmektedir [9,12].…”

“…Dip kısmı yarı odunsu ve çokça dallanan bikinin boyu 100 cm'e kadar ulaşabilmektedir [3,9,10,11]. Fakat kültürü yapılan çördük otu bitkilerinde bitki boyu 30-60 cm arasında değişmektedir [9,12]. Çördük otu bitkisinin ortalama habitus çapı ise 37.1 cm'dir [13].…”

“…Taç yapraklar genellikle parlak viole-mavi renkli olmakla birlikte nadiren de olsa pembe veya beyaz renkli de olabilmektedir. Boru şeklindeki taç yaprakların içinde ise 4 adet erkek ve dişi organ bulunmaktadır [9,14]. Bölgelere göre değişmekle birlikte bitkide çiçeklenme Temmuz-Eylül ayları arasında gerçekleşmektedir.…”