Peanut-specific composite microbial inoculant—boosting high yields and a bountiful harvest.

In the golden September, as the autumn breeze gently blows, it is once again time to harvest spring‑planted peanuts. Sow a single seed in spring, and reap ten thousand bushels in autumn. From the moment that tiny seed is sown until the final harvest, every step is steeped in the farmers’ hard work and sweat. Watching them toil day and night, their faces turned toward the earth and their backs bent under the sun, there is no greater reward than the bountiful harvest of this golden season. As each peanut vine is pulled up by its roots, clusters of pearly white pods emerge from the soil. Peeling back the mud‑streaked shells, plump, rosy‑hued peanuts appear before your eyes, a sight that never fails to delight.

Peanuts have long been a major grain and oilseed crop for farmers in northern China, serving as a primary source of farm income. In recent years, the peanut market has generally maintained a stable yet moderately strong trend, with farmers’ planting incomes also rising. However, the over-reliance on a single cropping pattern has increasingly exacerbated the problem of continuous monoculture.
First, continuous cropping over many years can lead to a severe decline in peanut yield and quality.
Second, continuous monoculture of peanuts can disrupt the balance of nutrient elements in the soil, and subsequent peanut planting will inevitably lead to nutrient deficiency symptoms.
Third, various soil-borne pests and diseases have increased, leading to a rise in diseased peanut plants with affected roots in the soil, which in turn contaminates the soil with toxins.
Fourth, continuous peanut cropping leads to an increase in organic acids in the soil, disrupting the soil’s pH balance and thereby hindering the plant’s ability to absorb nutrients.

To address the aforementioned challenges faced by peanut farmers, Nongda Fertilizer has developed a specialized composite microbial inoculant for peanuts. This product helps prevent and control white mold disease, fruit rot, and empty pods, while replenishing secondary and micronutrients and improving soil conditions, thereby achieving both disease suppression and yield enhancement.

Through this year’s demonstration and promotion, the efficacy of the peanut‑specific composite microbial inoculant has been widely recognized by farmers. After applying 1–2 bags per mu, soilborne diseases are significantly reduced, peanut pod set is increased, seed fill is improved, the marketable yield of pods rises, and overall peanut quality is enhanced.

The composite microbial inoculant is rich in the QT‑5 microbial consortium, which includes biocontrol bacteria and fungi such as Bacillus subtilis HG‑15, Bacillus amyloliquefaciens XH‑9, and Trichoderma harzianum H5. By secreting antibiotic compounds, proteases, cellulases, chitinases, and other bioactive substances, the QT‑5 consortium inhibits the growth of pathogenic microorganisms and the germination of their spores, delivering excellent preventive efficacy against white mold and fruit rot. Additionally, the QT‑5 consortium induces systemic resistance (ISR) in plants and promotes plant growth through the production of IAA, siderophores, and other metabolites.

The composite microbial inoculant is rich in mineral-derived humic acid, fulvic acid, amino acids, calcium, magnesium, molybdenum, and other nutrients, which can promote peanut root growth, enhance nutrient uptake, and improve pod set. Mineral-derived humic acid contains a variety of functional groups that stimulate crop growth and development as well as internal physiological metabolism, stimulating cell division and elongation in the root apical meristem. This leads to faster seedling rooting, increased lateral root formation, greater root biomass, and extended root length, ultimately significantly boosting the peanut’s capacity to absorb water and nutrients. Secondary and micronutrients—calcium, magnesium, and molybdenum—facilitate the synthesis of proteins and amides within the plant, reduce empty‑pod rates, and increase pod fullness. Calcium absorbed by the peanut roots is primarily stored in the stems and leaves, while the calcium required for pod development is mainly taken up directly from the soil via the pegs, young pods, and mature pods. Therefore, applying calcium as a base fertilizer to the fruiting layer is beneficial for pod development.

Finally, let me share some tips for using microbial inoculants: