Crop application data
A major pulse across India and South Asia, central to food supply and to the soil-fertility phase of cereal rotations.
55 kg N/ha
the nitrogen black gram can fix into a depleted rotation — held back where native rhizobia are too sparse to nodulate it well.
Usually grown in low-input, intercropped systems on depleted soils, where sparse native rhizobia limit nodulation and the nitrogen it returns to the rotation.
A major pulse across South Asia, black gram is both food on the plate and the fertility-building phase of the cereal rotations it sits within.
It is usually raised low-input and intercropped on depleted soils, where sparse native rhizobia limit how well it can nodulate in the first place.
Weak fixation caps both the crop itself and the nitrogen it hands to the following cereal — so a struggling rotation loses on both counts.
A crop-matched program led by the Orvan™ coupling, backed by a region-specific rhizobium (Nodu™) and phosphate-solubilizing, stress-tolerance PGPR (Vigor™). Each is field-proven and available on its own.
Rhizosphere coordination consortium
Nitrogen-fixation potentiation — applied alongside your rhizobial inoculant. Orvan™ carries no rhizobia of its own; it amplifies the ones already adapted to your soil.
Rhizobial inoculant
The region-matched, nitrogen-fixing rhizobia your crop needs — so it fixes more of its own nitrogen and you buy less.
PGPR — phosphorus & stress
Frees bound soil phosphorus, builds stronger roots, and buffers drought and salinity stress — the second leg of the consortium.
Packaging and label information may vary by product version and market.
Orvan™ field trials · Black Gram · vs. untreated control
Across 30 sites in 4 provinces (Yunnan, Guangxi, Hainan; 2022–2024): +11.9% average yield, up to 4.3× more nodules, 38–41 nodules per plant, and up to 55 kg N/ha fixed, strengthening the pulse phase of cereal rotations.