Nano-Fertilizer Application to Increase Growth and Yield of Sweet Pepper under Potassium Levels

Background and objective: Under green-house conditions, two pot experiments were conducted an experimental farm at Faculty of Agriculture, Menoufia University in 2015 and 2016 summer seasons.Methodology: This work aimed to study the effect of four rates of potassium fertilizer, 200, 250, 300 and 350kg/fed.and two rates of lithovit 2.5 and 5.0g/l water as a foliar application as well as their interactions, on growth characters, water relations, chemical composition, fruit yield and its components of the sweet pepper (Capasicum annuum L.) plants.Results: It is very clearly in our results that all treatments used in this study at either levels of potassium fertilizer or lithovit levels as well as their interaction, led to an increase in all vegetative growth characters, total & relative water content, bound & free water, photosynthetic pigments, total carbohydrates, total soluble sugars, N, P, & K concentrations and yield and its components.Meanwhile it decreased proline concentration, peroxidase and phenoloxidase activity.Conclusion: It could be recommended that, the use of potassium fertilizer interacted with lithovit application on sweet pepper led to increase the productivity of pepper plants in terms of quantity and quality.