The use of plant growth–promoting rhizobacteria (PGPR) associated with rhizobia may improve biological N fixation, nutrient acquisition, and grain yield of the peanut (Arachis hypogaea L.). However, few studies have reported the effect of inoculation of rhizobia and PGPR in association with Mo in tropical soil conditions. This study examined the effectiveness of (co)inoculation with Bradyrhizobium spp. and/or Azospirillum brasilense and Mo application in improving the yield response of creeping peanut crop (‘RUNNER IAC 886’). The effects of rhizobacteria and Mo on nodulation, crop growth, chlorophyll content, and yield of peanut were investigated in a moderately acidic sandy soil (pH 5.0) from the Brazilian Cerrado during the 2016–2017 and 2017–2018 growing seasons. Four seed inoculation treatments (control [uninoculated seeds], inoculation with Bradyrhizobium spp. strains SEMIA 5079 and SEMIA 5080, inoculation with Azospirillum brasilense strains Ab‐V5 and Ab‐V6, and co‐inoculation of Bradyrhizobium spp. and Azospirillum brasilense) and two Mo levels (0 and 200 mg Mo kg⁻¹ of seed) were studied. Results showed that the effects of the interaction between rhizobacteria and Mo application were not significant (p > .05) for all crop traits. Root nodulation, dry matter accumulation, and chlorophyll content were significantly greater in Mo‐treated peanut plants than control plants in both seasons. However, the response of crop grain yield was significantly greater (17.7%) in Mo‐treated plants only in the 2017–2018 season. Therefore, the improved root nodulation, crop growth, and chlorophyll content resulting from Mo application can lead to increased pod and grain yield in peanut. Inoculation with Bradyrhizobium spp. alone or combined with A. brasilense enhanced root nodulation, chlorophyll content, and peanut grain yield. Over two harvests, average peanut grain yield increased by 25.3 and 24.0% with inoculation of Bradyrhizobium spp. alone and combined with A. brasilense, respectively, compared with noninoculated plants. Due to lower cost and higher profitability, inoculation of Bradyrhizobium spp. alone is the most efficient practice for peanut cropping in sandy soils of the Brazilian Cerrado. Together with Mo application, these agricultural practices can be recommended for Brazilian peanut farmers.

中文翻译：

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花生对根瘤菌共接种的反应。巴西塞拉多沙质土壤中的巴西硼硅和固氮螺菌和钼的施用

与根瘤菌相关的促进植物生长的根际细菌（PGPR）的使用可以改善花生的生物固氮，养分获取和谷物产量（花生）。但是，很少有研究报道在热带土壤条件下接种根瘤菌和PGPR与Mo结合会产生影响。这项研究检查了与根瘤菌属菌种（共）接种的有效性。和/或巴西固氮螺和钼在改善of花生作物产量响应中的应用（'RUNNER IAC 886'）。在2016-2017年和2017-2018年生长季节，在巴西塞拉多市的中度酸性沙质土壤（pH 5.0）中研究了根瘤菌和钼对结瘤，作物生长，叶绿素含量和花生产量的影响。四个种子接种处理（对照[未接种种子]，接种根瘤菌属菌株SEMIA 5079和SEMIA 5080，接种巴西固氮螺菌菌株的Ab-V5和Ab-V6，和共接种慢生根瘤菌属和巴西固氮螺菌）和两个Mo含量（0和200 mg Mo kg ^-1种子）进行了研究。结果表明， 对于所有作物性状，根际细菌和钼施用之间的相互作用影响都不显着（p > .05）。钼处理的花生植株的根瘤，干物质积累和叶绿素含量在两个季节均显着高于对照植株。然而，仅在2017-2018季节，经过钼处理的作物对作物籽粒产量的响应明显更高（17.7％）。因此，由于施用钼改善了根瘤，作物生长和叶绿素含量，可以提高花生的荚果和谷物产量。用根瘤菌属菌种接种。单独或与巴西乳杆菌结合增强根瘤，叶绿素含量和花生籽粒产量。在两个收获期中，接种根瘤菌后，花生平均单产分别提高了25.3％和24.0％。与未接种的植物相比，它们分别单独和与巴西柔菇结合。由于成本较低且利润较高，因此接种了根瘤菌属菌种。在巴西Cerrado的沙质土壤中种植花生是最有效的方法。结合钼的施用，可将这些农业实践推荐给巴西花生农。