The right tissue at the right time
Norms only apply to the plant part and growth stage they were set for: petioles at bloom for vines, spring-flush leaves for citrus. A sample taken any other way can't be read against them.
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Leaf analysis that shows what the crop is really taking up.
A soil analysis shows what is in the ground; a leaf analysis shows what the plant is getting. We sample the right tissue at the right stage and read it against the crop's norms, independently.
Why it matters
Why leaf analysis is worth doing well
Trends beat single results
One analysis is a snapshot. The same blocks sampled at the same stage every season show whether nutrition is improving or slipping.
Find hidden hunger first
A shortage can cost yield before any symptom shows on the leaves. The analysis finds it while there is still time to correct it.
Leaf and soil together
Reading the leaf beside the soil analysis separates a true shortage from an uptake problem caused by pH, water or root health.
How we do it
Four steps, the same way every time.
1
Time it
Sampling timed to the crop's reference growth stage.
2
Sample
Representative leaves or petioles per block, taken the same way every time.
3
Analyse
Macro- and micronutrients by an accredited laboratory.
4
Interpret
Read against the crop's norms, the soil analysis and last season's results, with a recommendation.
What you get back
What lands on your desk.
- Leaf results per block against the crop's norms
- Season-on-season trends for each block
- Recommendations for foliar or soil corrections, by nutrient
- A written report with what to do and when
Questions
Questions farmers ask us.
When should leaves be sampled?
It depends on the crop: for vines usually at full bloom and véraison, for citrus on spring-flush leaves in late summer to autumn. Each crop page shows its own sampling calendar.
Can a leaf analysis replace a soil analysis?
No, they answer different questions. The soil analysis shows what is available; the leaf analysis shows what the crop is taking up. Together they explain why a block performs the way it does.
Which crops do you sample?
Wine and table grapes, citrus, pomegranates, lucerne, grains and vegetables such as tomatoes and onions.
More from Integri Ag
Other services and the crops we work in.
Contact
Talk to an independent agronomist about leaf analysis.
Evert Bergh, agronomist. Based in Durbanville, serving farmers across the Western Cape and nationally.