This project is being carried out as part of the cooperation between Farm Khalil Ben Attia – Tunisia, SGDAI General Society for Agricultural and Industrial Development – Tunisia and SANBOS GmbH – Germany.
1. Experimental procedure
Table 1: Overview of the treatment parameters
| Responsible organization | Farm Khalil Ben Attia |
| Location | High Medjerda Valley, Oued Zergau, Béjà, Tunisia Figure 1. Map |
| Soil quality | clay and limestone |
| Climate conditions | very dry season with high temperatures: 7-18°C winter, 25-40°C summer +38% higher temperature than long-term average -41% less rainfall than long-term average |
| Water supply | Rainwater only, no irrigation |
| Fertilizers, pesticides | 2 x ammonite contributions of 33% in the early tillering and bolting, no herbicides and fungicides used |
| Crop and plot | Cv ´Mâali´, 10 ha plot |
| Experimental product | Sanbio EPSOMIT |
| Dose and application | 1 application: 1 kg/ha in 500 L water/ha 35 days after seeding |
| Seeding | 2016-12-10 |
| Application | 2017-01-15, BBCH 13, 1 applications foliar spray |
| Harvest | 2017-06-15 |
Table 2. 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 |
Figure 2. Timeline of season
2. Results
Table 3: Productive performance
| Parameter | Yield (q*/ha) | Difference in yield between treated and untreated (%) |
| Control, untreated | 27 | |
| EPSOMIT, treated | 33 | +22.2% |
q*=100 kg
Figure 3: Comparison of yield (q/ha)
4. Conclusion
“I am very convinced of the performance and economic profitability of the fertilizer Sanbio EPSOMIT from SANBOS GmbH. With only 1 kg per hectare, production was increased by up to 22% despite the lack of water up to 35% and the great temperature drop in winter and the very high temperature in summer during the 2016-2017. Despite that we have not used fungicidal pesticides, after the use of the fertilizer Sanbio EPSOMIT we have not noticed problems of fungal diseases like septerose, rust and stress problems. The use of Sanbio EPSOMIT fertilizer has reduced production costs and improved productivity. I recommend the use of the fertilizer Sanbio EPSOMIT in the wheat cultivation.” Ahmed Ben Aissa, 2017