Interaction of Streptomyces and Rhizobium with soybean root growth and nodulation [Egypt]
1985
Naguib, M.I. (Cairo Univ. (Egypt). Faculty of Science) | Mohamed, Z.K. | Sadek, M.Y. | Shalaby, A.M.
Dry seed sowing highly increased root length and number of rootlets of soybean plants compared to soaking treatment; more prominently with irrigation with the culture filtrates and/or presence of Rhizobium in the soil. Calcium nitrate was a better stimulant to root length compared to calcium chloride or water soaking. Streptomyces violochromogenes fitrate was a better stimulant than of S. glaucescens. The former filtrate was highly initiative to nodule formation compared to the latter which was more effective with calcium soaking treatments. In Rhizobium-free soil, S. violochromogenes filtrate stimulated fresh weight gain by roots. In Rhizobium containing soil, dry seed sowing favoured a better gain in fresh weight, particularly when using S. violochromogenes filtrate for irrigation. Similar trends were observed in the dry weight gain.
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