Determination of Optimum Nitrogen and Potassium Rates on The Growth and Appearance Values of Petunia (Petunia Hybrida Vilm) Grown in Pot Culture

In this study, the effects of nitrogen and potassium applied to Petunia plants grown in pot culture at different rates in nutrient solution on plant growth and appearance values were investigated.Plant fresh weight value, number of shoots, shoot length values, flowering time increased with increasing K rates at constant N level, while it increased with increasing N rates at constant potassium level.The N and K contents of the plant were consistent with the N and K concentration of the nutrient solution.It was determined that N/K ratios had a significant effect on N and K nutrition of petunia plants and the most effective N/K ratio in terms of plant growth and quality values was generally 0.75/1.According to these ratios, the optimum N and K feeding concentration of the nutrient solution was determined as 10.5 mmol L-1 for N and 14 mmol L-1 for K.