Effect of microbial agent ARC-BBBE demonstration application on peanut production in the Huang-huai-hai area of China

The microbial agent ARC-BBBE demonstration trials were conducted in four provinces in the main peanut-producing areas of the Huang-huai-hai plain of China. The results revealed that the application of ARC-BBBE led to a 1.09–1.70 fold increase in the number of nodules in the treatment group at the demonstration site compared to the control group. Moreover, the nodule weight in the treatment group was 0.80–3.32 times higher than that of the control group, and nitrogenase activity per plant showed a significant enhancement by 1.00–2.83 fold compared to controls. Additionally, notable improvements were observed in terms of increased fresh weight of whole plants, well-filled pod numbers, and enhanced growth performance; ultimately resulting in a harvest yield increase ranging from 9.46% to 49.04%. The abundance of Aspergillus flavus in rhizosphere soil was determined by the dilution spread plate method, and the inhibition rate was up to 86.7%. The application of ARC-BBBE in the significant peanut-producing areas of Huang-huai-hai has effects of promoting growth, nodulation, and increasing production. At the same time, it has the effect of inhibiting and controlling soil Aspergillus flavus, which provides a new green and low-carbon way to promote the high-quality development of the peanut industry.