Document Type : Research Paper
Authors
1 Dept. of Harticulture, College of Agriculture, Tarbiat Modarres University, Tehran, Iran
2 Research Institute of Forests and Rangelands, Tehran, Iran
Abstract
To study the effect of sowing date on fennel CV. Soroksari, this research work was carried out on randomized complete block design with three replications. The effects of sowing dates of 6 of March, 20 of March, 4 of April, 19 of April, 5 of May, 21 of May, 5 of June and 21 of June, were studied on growth, development, seed yield and essential oil and anethole content of fennel CV. Soroksari. The results show that sowing dates hade significant effect on growth, development and quality and quantity of active substances of fennel. On the basis of the results the seeds were sown on 21 of May the seeds were germinated and developed faster. The highest plant (150.8 cm) and the largest number of branches per plant (10.1) was obtained from the plants were sown on 4 of April. There was no significant effect among 1000 seeds weight and essential oil content of different sowing dates. The largest seed yield (1864.3Kg/ha) and essential oil yield (91.3Kg/ha) was obtained from the seeds were sown on 4 of April. Anethole content were decreased from the plants were sown from 6 of March to 21 of June, the lowest amount (58.2%) was extracted from the plants were sown on 21 of June. According to the results of this resesrch trial the most suitable date for sowing of fennel cv. Soroksari is recommended 20 of March to 4 of April.
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