Abdel-Nasser M, Mahmoud S A, Makawi A, Ali F S
Zentralbl Bakteriol Naturwiss. 1979;134(8):666-71. doi: 10.1016/s0323-6056(79)80025-7.
Both pot (sterilized sand cultures) and field experiments were run, using 23 different strains of Rhizobium japonicum and the commercial soyabean inoculum "Okadin". The failure of the control (non-inoculated plants) to form nodules may be due to the abscence of adequate densities of effective soyabean-rhizobia strains and their low persistence under Egyptian soil conditions. Therefore, inoculation with an efficient strain of R. japonicum seemed to be necessary. However, the strains used varied in their effectiveness, indicating that both the total number of nodules and total nitrogen content of the nodules should not be taken as an index.
进行了盆栽（灭菌砂培）和田间试验，使用了23种不同的日本根瘤菌菌株以及商业大豆接种剂“冈田菌剂”。对照（未接种植物）未能形成根瘤，可能是由于有效大豆根瘤菌菌株的密度不足以及它们在埃及土壤条件下的低持久性。因此，接种高效的日本根瘤菌菌株似乎是必要的。然而，所使用的菌株在有效性方面存在差异，这表明根瘤的总数和根瘤的总氮含量都不应被视为一个指标。
