Effect of Treated Filter Cake on Yield and its Components of Sugar Beet under Saline Soil Condition

Sugar beet, the first sugar crop in Egypt, is one of the most salt tolerant crops. Tremendous amounts of sugar beet industrial byproducts, including filter cake, are annually produced from beet sugar factories causing environmental problems. A field experiment was conducted at the Research Farm of Delta Sugar Company, Kafr El-Sheikh during the two successive seasons of 2017/2018 and 2018/2019 aiming to the response of sugar beet to application of sulphuric and phosphoric acids-treated filter cake under saline soil condition in terms of growth, yield and quality. Application of 1 ton/fed. of treated filter cake significantly enhanced root length, diameter and leaf area in both growing seasons. The highest values of root length and diameter, leaf area, root and top yields were obtained from the application of either 1 or 2 tons/fed. of treated filter cake. Molasses application led to significant enhancement of root length and diameter and leaf area as well. Application of molasses at the rate of 50 L/fed. significantly increased root and top yields.