Effect of potassium and boron spraying in yield and quality characteristics for sunflower crop Helianthus annuus L. var luleo

"A field experiment was carried out during the autumn season of 2016 in one of the Agricultural fields in the area of Abu- Guelana ,which is 13 km from the center of Muthanna province , To find out the effect of potassium and boron spraying in the yield and quality characteristics , for sunflower crop - variety Luleo.Used in this study completely randomized block design Arrangement factorial experiment , The study included two factors : The first factors of four concentrations of potassium spray (0, 2500, 5000, 7500) mg K L-1 , and the second factor four concentrations of boron spray (0, 50, 100, 150) mg B L-1 . The mean of the treatments was compared with the least significant difference (L.S.D) at a probability level of 0.05% . Results showed that the potassium spray treatment 7500 mg k L-1 was significantly higher in all studied traits ,(number of seeds/head , weight of thousand seed , fertility percentage ,seed yield , total seed yield and total oil yield) , The results showed that the treatment of boron spray with 100 mg B L-1 concentration was significantly higher in all studied traits. The overlap treatment showed significant superiority in all the traits"