1. Materials
Location: Téboulba – Tunisia
Farmer: Ferme Noureddine
Product: Sanbio EPSOMIT, manufactured by SANBOS GmbH, Germany
Table 1. Product presentation of Sanbio EPSOMIT
| Product name | Composition | Description | Application |
| Sanbio EPSOMIT | MgO + SO3 (18.2 + 35) Magnesium sulphate heptahydrate, activated by SANBIO Biocatalytical Stimulation Technology | Fertilizer and biological activator (certified in France, Germany, EC, USA)Stimulation of plant growth and immunityBetter protection against fungal diseases and biotic and abiotic stressBetter control of factors favorable to plant growthBetter germination and growth of vegetation and development of roots and shootsBetter mobilization and assimilation of nutrientsEarly flowering and maturationIncreased production and improved quality | Dosage: 1 kg / ha in 200-500 l of water No. of application: 1-2 Mode of application: Foliar spray Stage of application: 3-5 leaf stage |
2. Methods and results
Table 2. Methods and results
| Data | Control (untreated) | Lot 1 (treated) |
| Potato variety | Spunta | Spunta |
| Area | 0.5 ha | 0.5 ha |
| Irrigation method | Drip irrigation and rainfall | Drip irrigation and rainfall |
| Fertilizer treatment | + | + |
| Herbicide treatment | + | – |
| Fungicide treatment | + | – |
| Stage of application of Sanbio EPSOMIT | – | 5 leave stage |
| Dosage of Sanbio EPSOMIT | – | 1.25 kg+ 500 L water per hectare |
| Number of application of Sanbio EPSOMIT | – | 2 |
| Mode of application | – | Foliar spray |
| Date of planting | – | 10/01/2017 |
| Date of application of Sanbio EPSOMIT | – | 01/03/2017 15/03/2017 |
| Date of harvest | 15/04/2017 | 15/04/2017 |
| Yield (t/ha) | 30 | 35 |
Figure 1. Timeline of season
Figure 2. Yield [q/ha]
4. Conclusion
“I have made two applications of Sanbio EPSOMIT and I am very convinced of this product. We found a very good vegetation and vigor of plants and no fungal disease and no stress. We increased production by eight tons per hectare, respectively +17%, and obtained good quality with an increase in size and a homogeneous product. I did not used fungicides and saved costs. There was no disease observed. I will use the product in the future continuously!” Ferme Noureddine
Picture 1. Field at early growth stage
Picture 2. Strong plants
Picture 3. Heavy tubers
Picture 4. Rich harvest