Corteva Biologicals·Bio-fertilizers
Blu N
Biological nitrogen nutrition optimiser with the endophytic bacteria Methylobacterium symbioticum, which fix nitrogen from the air, as a water-soluble powder, one treatment of 333 g/ha per season.
Main advantages
- Methylobacterium symbioticum — nitrogen from the air
- 333 g/ha, one treatment — the rate per season
- Three-layer microencapsulation — protects the bacteria
- No leaching losses — per the maker
Overview
About this product
Blu N — a biological product with a strain of the endophytic bacteria Methylobacterium symbioticum (3×10⁷ CFU/g), which colonise the plant and convert atmospheric nitrogen N2 into the ammonium form NH4+. Per the maker, it is an additional source of nitrogen throughout the growing season without leaching losses, and three-layer microencapsulation protects the bacteria from external factors.
The rate is 333 g/ha, one treatment per season; working solution pH 5–8, temperature from +10 to +30 °C, in the morning or evening. The maker recommends it for maize, small-grain cereals, winter oilseed rape, sunflower, soybean, sugar beet, potatoes and vegetables.
Bags of 1 and 3 kg.
Application
Rate, timing and crops
Rate
Maize
- Application rate, g/ha
- 333
- Water volume, l/ha
- 100-250
- Application stage
- BBCH 14-18 (4 to 8 true leaves)
Small-grain cereals
- Application stage
- BBCH 25-47 (after spring regrowth: mid-tillering - start of flowering)
Winter oilseed rape
- Application stage
- BBCH 30-50 (after spring regrowth: from start of stem elongation to bud formation)
Sunflower
- Application stage
- BBCH 14-51 (from 4 leaves to the start of the "star" bud stage)
Soybean
- Application stage
- BBCH 13-51 (from 3 trifoliate leaves to the start of budding)
Total application rate 333 g/ha, 1 treatment per season
- Timing
- In the morning and evening; on very hot days avoid evening and night application
- Conditions
Temperature from +10 to +30 °C (optimum +15…+25 °C)
Air humidity 40-80%
- Tank mix
Take care with tank mixes: before mixing, consult the product manufacturers and Corteva
Add last to the tank mix; use the working solution within 2 hours
- Crops
- MaizeSmall-grain cerealsWinter oilseed rapeSunflowerSoybeanSugar beetPotatoesVegetable crops
Figures from the manufacturer, Corteva Biologicals. Source page
Specifications
Nutrient composition
| Brand | Corteva Biologicals |
|---|---|
| Type | Bio-fertilizer |
Composition
| |
| Form | Powder |
| Formulation | water-soluble powder |
| Target Crops | Corn, Cereals, Winter rapeseed, Sunflower, Soybean, Sugar Beet, Potato, Vegetables |
| Manufacturer | Corteva Agriscience |
| Packaging | 1 kg; 3 kg |
Vendor offers
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Questions & answers
What farmers ask most
- Rates depend on crop, prior history, soil analysis and nutrient status. An agronomist sets the dose from this product's label — not an NPK-complex template of 150–300 kg/ha.
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Product specifications are compiled from publicly available manufacturer sources and are provided for guidance only — confirm all details with the vendor before purchase. Brand names, logos and trademarks are the property of their respective owners; a listing on ADAM does not imply affiliation, sponsorship or endorsement.