Peanut inoculant program (Arachis hypogaea)
A leading oilseed and food legume worldwide, and the crop most exposed to aflatoxin — judged against some of the strictest safety limits in the food trade.
The challenge
Two of peanut’s costliest problems strike at once: Aspergillus flavus contaminates kernels with aflatoxin, while nitrogen use stays inefficient, so growers pay for fertilizer and still lose value to contamination and trade rejection.
>80% — Less soil A. flavus on Orvan™-treated peanut in OCRI-CAAS field trials — alongside +19.9% average yield.
A high-value crop, uniquely exposed
Peanut is a leading oilseed and food legume — but its biology puts it in harm’s way. The pods ripen underground, in direct contact with the soil, so the crop meets Aspergillus flavus exactly where the fungus lives, and the end-of-season heat and drought that stress the plant are when the fungus makes the most toxin.
Aflatoxin — a food-safety and trade barrier
Aflatoxin is a potent carcinogen, and the thresholds are unforgiving. A single contaminated lot can be downgraded or turned away at the border, so what is at stake is not a few points of yield — it is the value of the whole crop.
Nitrogen — paid for, and often wasted
Peanut can fix much of its own nitrogen, but only when effective rhizobia are present and nodulation is strong. Where they are missing or weak — common on new ground — growers fall back on fertilizer, an added cost that, applied heavily, suppresses the very fixation it is meant to replace.
The program
- Nodu™ GN — establishes nitrogen-fixing nodulation from sowing
- Vigor™ — strengthens roots, vigor, and stress tolerance
- Orvan™ — pairs the aflatoxin–nitrogen coupling with amplified nodulation, in one pass
Field-proven
Across 325 sites in 19 provinces (Henan, Shandong, Liaoning; 2019–2024): +19.9% average yield, >80% less soil A. flavus, up to 8.5× more nodules, and nitrogenase activity up to 10.7× — largest where native rhizobia are scarce or the variety is susceptible. A well-nodulated peanut crop can also leave nitrogen worth ~96 kg N/ha for the following cereal.
Rhizobial fit
Peanut sits in the promiscuous cowpea-miscellany group, nodulated by slow-growing Bradyrhizobium (Arachis). Nodu™ GN is built on elite Arachis-compatible Bradyrhizobium and confirmed against your region’s resident populations; Orvan™ amplifies those native rhizobia rather than replacing them.
By product
- Orvan™ (Orvan™ Peanut): +19.9% yield, up to 8.5× more nodules; 325 sites / 19 provinces. Aflatoxin–nitrogen coupling.
- Nodu™ (Nodu™ GN, Bradyrhizobium (Arachis group)): +9.8% · 70 sites; Leaves ~96 kg N/ha for the following cereal.
- Vigor™ (PGPR): +7.3% · 44 sites.
How to use
At sowing: Orvan™ Ground (granule, 60 kg/ha), Flow (liquid in-furrow), or Seed/Coat; Nodu™ GN 3–5 g/kg seed. Apply Orvan™ last, after any fungicide seed treatment.