EFFECT OF ORGANIC FERTILIZER, GYPSUM AND FOLIAR-CA ON YIELD, YIELD COMPONENTS AND QUALITY OF PEANUT PLANT GROWN IN SANDY SOIL

Two field experiment were conducted at Ismailia Experiment Research Station, Ismailia Governorate, Egypt during the two successive seasons of 2015 and 2016 to evaluate the effect of different rates of compost application (0, 12.5 and 25 Mg ha -1 ), gypsum at rates of (0, 0.6 and 1.2 Mg ha -1 ) and Ca-foliar (300 mg L -1 ) and its combination application on yield and quality of peanut grown in a sandy soil. Application of compost significantly increased pods and grain yield, shelling percentage and 100 grain weight of peanut as compared to control. The increases were 29.6 and 35.4 % for pod and 35.5 and 41.40 % for grain due applications of 12.5 and 25 Mg ha -1 compost. Application any of the two gypsum rates increased pods, grain yield, shelling percentage and 100 seed weight with non-significant difference between two rates. Addition any of the two rates of compost significantly increased N, K, Fe, Zn and Mn contents of straw and seed. Two rates of gypsum also increased the same nutrient with non-significant difference between two rates. Oil and protein contents of grain significantly increased due to application of compost and /or gypsum.