Case study
Greenhouse Tomato Case Study
A long-season greenhouse tomato grower switched to buffered coir grow bags for tighter EC control.
- Yield vs previous substrate
- +8%
- EC consistency
- Improved
- Crop length
- Full season
Figures are illustrative — contact us for verified references.
The challenge
What the grower faced
Inconsistent EC between substrate batches led to variable feeding and uneven trusses across the block.
| Location | Northern Europe (placeholder) |
|---|---|
| Climate | Moderate, glasshouse-controlled |
| Growing method | High-wire, soil-free greenhouse |
| Substrate | 70/30 buffered, low-EC coir grow bags |
| Irrigation | High-frequency drip fertigation |
| Root development | More white root and uniform colonisation of the bag |
| Yield results | +8% vs previous substrate (illustrative) |
| Water use | Comparable, with steadier run-off EC |
The results
What changed
- More consistent feeding from a stable, low starting EC
- Healthier white roots and more uniform trusses
- Less labour spent correcting nutrition
“The consistency batch-to-batch is what changed things for us — we steer the crop, not the substrate.”
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