Effects of different levels of Potassium Nitrate KNO3 on emergence and of growth two variety of wheat.

Abstract

The study was conducted in the seed lab of the Agronomy Department – Faculty of Agriculture – Omar El-Mukhtar University – Libya during the 2018 season using the completely randomized design in factorial method (CRD) with three observations in order to evaluate the performance of two wheat varieties (Ben-Swaf and Salambo) under the influence of nine factors which are (T0 without soaking – T1 distilled water soak for 6 hours – T2 10% concentration of KNO₃ soak for 6 hours – T3 15% of KNO₃ soak for 6 hours – T4 20% of KNO₃ soak for 6 hours – T5 distilled water soak for 12 hours – T6 10% concentration of KNO₃ soak for 12 hours – T7 15% KNO₃ soak for 12 hours - T8 20% KNO₃ soak for 12 hours). The results showed that the difference between the two varieties had a significant effect on some of the studied traits where the variant Ben-Swaf gave the highest values when it came to root length - wet weight of seedlings – dry weight of seedlings, whereas the variety Salambo gave the highest percent of germination – chlorophyll content, however, with regards to the plumula length, no significant differences were found. The T8 gave the highest values of percent of germination, whereas the T2 gave the highest values with regard to chlorophyll content and plumula length, the factor T5 gave the highest value when it came to root length, whereas there were no significant differences when it came to wet weight and dry weight of seedlings ,Showed no significant difference due to different concentration of potassium nitrate.