Effect of Irradiated Compost and Bio Fertilizer on Vegetative Growth and Fruit Quality of Valencia Orange

Citrus fruits are the biggest area cultivated or production in addition to fruit exportation also it is considered the most popular fruit crop in Egypt. Valencia orange grown in sandy soils, which usually poor in nutrient content, organic matter and low water holding capacity, with high nutrient leaching losses resulting in negative effects on vegetative growth, yield and fruit quality. Trees grown in such soils, therefore need more attention in cultural practices such as fertilization, foliar spray with minerals and bio fertilizers to enhance growth, yield and fruit quality Salama, 2015.