The SANBIO ferti-activators can control biotic and abiotic stress and have positive impact to vegetative and resistive processes.
The aim of this study is to evaluate the effects of simultaneous use of SANBIO ferti-activators EPSOMIT and PLANTA on productivity and quality of citrus variety ´Maltese´.
This project is being carried out within the collaboration between the SOTAM, Groupe SOROUBAT, Tunisia and SANBOS GmbH, Germany.
1. Materials and methods
Table 1. Basic data
| Season | 2017 |
| Location | Bi’r Marwah, NE of Tunisia  Picture 1: Orchad |
| Responsible organization | SOTAM, Groupe SOROUBAT |
| Crop | Citrus |
| Variety | Maltaise demi sanguine |
| Trial field | 1 block system, 550 ha, 416 trees per hectare |
| Pesticides | None |
| Irrigation | drip irrigation, salt content 0.8mg/L |
| Test product | Sanbio EPSOMIT / PLANTA, manufactured by SANBOS GmbH, Germany |
| Application | 2 kg SANBIO PLANTA + 500L water per ha, soil application 2 kg SANBIO EPSOMIT + 500L water per ha, foliar application, 14 days later |
| Date of planting | 1990 |
| Date of application | 07/2016 |
| Date of harvest | 01/2017 |
| Scoring | Yield, caliber, profitability |
2. Results
Table 2. Productive performance
| Treatment | Control (untreated lot) | SANBIO (treated lot) | |
| Total weight of harvest | to/ha | 48.1 | 52.4 |
Figure 1. Total weight of harvest (to/ha)
Figure 2. Profitability (Currency: Tunesian Dinar)
Picture 2. Orchad
Picture 3. Treated citrus tree
Picture 4. Fruits
3. Conclusion
To summarize, the present study shows significantly positive effects by use of ferti-activators Sanbio PLANTA and Sanbio EPSOMIT on productive performance of citrus.
The positive effects at glance:
- Higher harvest (weight, caliber)
- Profitablity and higher benefit (ROI 154%).