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OSR GAI online

Please note, the OSR GAI online tool is currently unavailable due to our new website. We're working on it, and it will be ready very soon!

If checking GAI for fertiliser application, don't forget to check for crop lodging risk.The CAT can be used at crop growth stage 12-31 to assess crop nitrogen content.The CAT can be used at crop growth stage 30-31 to assess crop lodging risk.Step 1 - Take a digital photograph

Take a digital photograph of the crop which is representative of the field and save this to your PC.

Caryx® Summary (spring)

To determine rate

Use this app to measure the GAI just before stem extension in late February

GAI > 0.8Caryx® 0.7 - 1.0 l/ha
Higher rate where tall variety / fertile site
GAI > 2.0Caryx® 1.0 - 1.4 l/ha
Higher rate where tall variety / fertile site

If LLS is active, add tebuconazole 0.5 l/ha or prothioconazole 0.3 l/ha. Tebuconazole will have neglible PGR activity.

Timing

  • From start of stem extension to yellow bud.
  • When spring growth has started, although a few cold nights won't matter

Why Caryx®

Caryx® is the only OSR product to have achieved registration solely on its PGR ability and is a key OSR management tool

Reduces lodging and creates open canopy+0.4 t/ha if lodging occurs
Reduces height and lodging risk. ADAS aerial surveys show that 31% of crop lodges each year.
Creates an open canopy+0.2 t/ha where no lodging
Reduces apical dominance and allows more light into the canopy. 15 dose response trials showed a yield benefit of 0.21 t/ha of Caryx® at 1.0 l/ha vs untreated.
Improves rooting+0.2 t/ha in a dry year
Caryx® increases rooting at depth by 35%, protecting yield in a dry summer (this occurs every 2-3 years)
Dual ai activityMepiquat chloride & metconazole
Copes with variable spring temperatures and across a wide growth stages range

Caryx® is a registered trademark of BASF. Caryx® contains mepiquat chloride and metconazole. Use plant protection products safely. Always read the label and product information before use.

This tool is compatible with JPEG (.jpeg, .jpg) images.

If checking GAI for fertiliser application, don't forget to check again for your Sunorg Pro needs.

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