Effect of the Date of Foliar Spraying with Various Concentrations of potassium on the production Elements of Safflower Crop

Abstract

 This research was carried out in Kafar Yahmoul Research Station Idlib Research Center during the agricultural season 2021/2022, and aimed to study the effect of foliar spraying with Potassium at two different dates and with different concentrations on the productive characteristics of safflower.

The seeds were manually sown on lines with 50 cm wide, and the distance between one plant and another was 25 cm, with 4 lines and a length of 3 meters for each experimental unit, according to a complete random design. Potassium was used in three concentrations (0,1,3) g/L and two spraying dates (at the beginning of a stem elongation and before flowering inflorescences open) and with three replications for each treatment.

The results showed a significant superiority of the treatment (concentration 3 g/L in the first date) Concerning the characteristics of plant height of 113.7cm, seeds yield 337.4 kg/d, and the productivity of the petals of 33.5 kg/d. In the second date, the treatment was significantly superior by the weight of the thousand seeds of 66.1g. The results showed a significant superiority of concentration of 1 g/L treatment in the second date with oil yield of 59.9 kg/d.