Effect of plant spacing and harvest dates (petals collecting) on growth, yield, and quality of Safflower (Carthamus tinctorius L.)

Ola Kajo * (1) and Rasha Al-Souda(1)

(1). Department of Field Crops, Faculty of Agriculture, Tishreen University, Latakia, Syria.

(*corresponding author: Dr. Ola Kajo,E-Mail:olakajo0932@yahoo.com, 0932663764).

                Received:30/03/2023         Accepted: 7/06/2023                                                     

Abstract: 

This research was conducted in Demsarkho region (Lattakia) during growing season 2022 in order to study the effect of  two plant spacing between plants (20  and 30 cm) and three  collecting dates of petals (when 50,100% flower heads were opened, and in the beginning of petals wilting) on some productive and qualitative characteristics of Safflower. The experiment was conducted using the Randomized complete blocks design with  with three replication. The results showed that the narrow plant spacing (20 cm) was superior in dry petals yield and seeds yield per unit of area (75.54 Kg/ha, 3721 Kg/ha respectively), whereas the highest percentage of oil in seeds  (30.50%) was recorded when planting at a spacing 30 cm between plants . For harvesting dates, the superiority of harvesting when petals wilting in seed yield per unit of area (4159 Kg/ha), and the percentage of oil in seeds. whereas, the highest yield of dry petals (79.8 Kg/ha) was recorded when  100% flower heads were opened, surpassing the other harvesting dates.  In addition, the results showed the interactive relation of the two study factors, the highest yield of seeds was recorded when planting at plant spacing (20 cm) and harvesting when petals wilting (4985 Kg/ha), while the highest yield of dry petals (89.7 Kg/ha) was obtained when planting at the same plant spacing but harvesting when 100% flower heads were opened .

Key words: Safflower , plant spacing ,  Harvesting petals dates , Seed Yield, petal yield, oil percentage.

Full paper in Arabic: pdf