Seed and Oil Productivity upon Foliar Spray of Soybean (glycine max l.) with Humic and Ascorbic Acids with or without Seed Irradiation | ||||
| Egyptian Journal of Soil Science | ||||
| Article 3, Volume 55, Issue 3, September 2015, Page 269-285 PDF (969.76 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejss.2015.635 | ||||
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| Abstract | ||||
| 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. | ||||
| Keywords | ||||
| sandy soil; Soybean; Humic and ascorbic acid; Seed irradiation with gamma ray | ||||
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