Mosaab Taan
(1). Faculty of Agricultural Engineering – Tishreen University – Lattakia – Syria.
(*Corresponding author: Mosaab Taan, Email: engmosaabtaan@gmail.com, Tel: 963 945 494 269).
Received: 1/08/2023 Accepted: 23/10/2023
Abstract:
The study was conducted in the village of Sobin in Hama, which is 5 km away from the city center, and 270 meters above sea level, during the agricultural season for the years 2021 and 2022, with the aim of evaluating the efficiency of seeds of some introduced varieties of onions in producing bulbs from planting seeds directly in the same year. The study conducted using a factorial experiment that included nine treatments with three replications for one treatment and included a study of three varieties (Hercules – Texas – Caesar) with three seed planting dates (9/25/2021, 10/10/2021 and 10/25/2021). In the varieties and dates planted. The results indicated the possibility of obtaining bulbs from planting seeds directly in two cultivars Hercules and Caesar at the aforementioned dates, and the results showed the superiority of the two cultivars Hercules and Caesar at the first planting date 9/25/2021 in terms of productivity per unit area of bulbs, which amounted to (4.15 kg / m2 for the cultivar Hercules On the date of 9/25/2021 and 4.33 kg / m 2 for the Caesar variety at the same date). It also showed a decline in the productivity of the two cultivars Hercules and Caesar per unit area when planting was delayed on the dates 10/10/2021 and 10/25/2021 to 2.6 and 2.26 kg/m2, respectively, compared with 3.1 and 2.4 kg/m2 for the Caesar cultivar. While the Texas Early Granum cultivar did not give a significant productivity, the formation of bulbs in this variety was limited to (0.56-0.4-0.36) kg. Accordingly, onions can be produced from planting the seeds of the two varieties Hercules and Caesar when they are planted on 9/25/2021.
Keywords: Onion seeds, planting date, cultivar, bulb production.
Full paper in Arabic: pdf