Yield and Quality Parameters of Sweet Pepper Fruits as Affected by P-Fertilization and Compost Town Refuse

In season of 2018, an experiment was established as field experiment to evaluate the effect of different raets of phosphorus fertilization (control, 25, 50, 75 and 100% from recommended dose, 60 kg.fed^-1calcium superphosphate SP; 15% P₂O₅ as main plots along with presence and absence of compost town refuse as sub-plots on growth, chemical contenst and productivity of sweet pepper plant (Capcicum annum) at the Experimental Farm of Faculty of Agricultural, El-Mansoura University.The experiment tested was arrauged in an experimental split plot design with three replicates.The results showed that growth of sweet pepper plants were affected signifiently according to application of P-fertilization, addition of 75% followed by 50% which recorded the highest values of average fresh weight (g), number of fruits per plant, total fruit yield per plant (g/plant) and total yield (ton/fed) as well as DM%, an  increase  in  photosynthetic pigments, TSS% and V.C (mg/100g) and minerals composition (N, P and K% in leaves and fruits) was also recorded, while Fe, Mn and Zn in sweet pepper fruits decreased with increasing P-fertilization comparing with the control which treatment recorded the lowest values,where the highest values were recorded with 25% of P-fertilization. Heavy metals were increased until 100% P-fertilization. All studied parameters under investigation were increased due to application of compost town refuse. So, it could be recommended for using both 75% from P-fertilization recommended dose and compost town refuse for optimum sweet pepper performance. Therefore, the organic fertilizers might help in reducing the need  of  high  rates  of  P-fertilization to maintain proper P amount  and also in  reducing  the  expenses.