Field experiments were conducted for two years at the Desert Research Center (DRC), Agricultural Experimental Station at El-Kharga Oasis, New Valley Governorate, South Western, Egypt, during two winter growing seasons of 2015/2016 and 2016/ 2017. This work aimed to study the effect of phosphoric acid foliar application levels of 0, 0.5, 1, 1.5 and 2 L/feddan (0.42 hectar) and sulphur fertilizer at rates of 0, 50, 100, 150 and 200 kg S/feddan on the yield and quality of chickpea in alkaline soils. Experimental results revealed that yield and quality of chickpea were significantly influenced by phosphorus foliar application, except seed K and S%, which were not significantly affected in both seasons. The maximum values of these parameters
were produced by 1 L/feddan. Phosphorus (P) foliar in both seasons as compared with nil P (control), 1.5 and 2 L/feddan, except P% in seeds was increased with the increase of spraying level of P from 0 to 2 L/feddan in both seasons. The results showed that increasing sulphur fertilization rates from 0 to 200 kg S/feddan caused a significant increase in all yield components and seed chemical composition of chickpea plants under this study in the both seasons. The highest values were obtained at 200 kg S/feddan compared with control treatment (without sulphur fertilizer), this is fairly true in both seasons. Yield and quality of chickpea were significantly affected by the interaction between phosphorus foliar application and sulphur fertilizer. While, percentages of phosphorus, potassium and sulphur in seeds have not been affected significantly by the interaction in both seasons.