THE STUDY evaluates the beneficial effects of soybean foliar ……..spray with humic acid (HA) and ascorbic acid (AA) antioxidants at 2000 mg L^-1 HA and 300 and 600 mg L.^-1 AA; and seed irradiation of 15 and 30Gy gamma rays. The split-plot experiment was conducted on a sandy soil in Ismailia Governorate, Egypt, during 2010 summer season. Main plots were for foliar spray treatments of: none, HA, AA1, AA2," HA+AA1"," HA+AA2"; AA1 and AA2, i.e. 300 and 600 mg L^-1. Sub-plots were for irradiation of, none, 15Gy and 30Gy. 100-seed weight, straw and pod yields as well as protein, N, P, K and oil contents; protein and oil yields and N, P and K uptake increased by 15Gy than by 30Gy. Main effect of spray shows a general descending order of "HA+AA2" > "HA+AA1" > HA > AA2 > AA1. Highest straw yield (5.82 Mg ha^–1) was by HA+AA1+15Gy. Highest seed yield (2.99 Mg ha^–1) was by HA+AA2+30Gy. Highest uptake of P (23.2 kg ha^–1) and K (206 kg ha^–1), respectively at straw were achieved owing to the addition of HA+AA1+15Gy gamma ray while treatment of HA+AA2 with 15Gy gamma ray gave highest N-uptake (163 kg ha^–1). Highest N, P and K uptake in seeds (149, 19.1 and 49.0 kg ha^–1, respectively) were by (HA+AA2+15Gy gamma ray dose). The treatment of HA+AA2 with 15Gy gamma ray was superior to the other treatments.