Water quality limits
With recirculation, toxic water takes on a complex composition. We want more insight into the effect of the substances present in combination with the various microbial processes in various compartments of the water system. We also want to have a quicker picture of the biological water quality (than the few days in the laboratory). In this project, a water quality model is being developed, with which measured data from water quality sensors, climate sensors, plant health sensors and additional discontinuous data sources such as laboratory analyses, can be reliably interpreted in practice. This results in steering options aimed at healthy and safe cultivation. The project provides more knowledge on the use and interpretation of data from sensors for autonomous cultivation and the possibilities of artificial intelligence for steering and controlling the water system and crops in greenhouse horticulture.
Project description:
Toxic water quality is crucial for a business-safe crop. Whereas previously water quality was seen as the presence, or absence, of nutrients, in full recirculation it now shifts to a complex composition of nutrients, crop protection agents, inhibitors, disinfectants, organic matter, and various microbiological parameters including the presence of pathogens and pests. In addition, the water system on the cultivation farm consists of various water flows in pipes to-, and from the cultivation, with water disinfection and temporary storage in between. The effect on cultivation of the substances present in combination with the various microbial processes in various compartments of the water system is largely unknown.
In a previous project (PPS Water Quality Fast in View), an initial mobile setup was made for real-time monitoring of water values. This provided insight into the added value (synergy) of simultaneously measuring different parameters, such as, for example, the combination of acidity and redox potential as a measure of the risk of Fusarium. Within this project, we want to gain more and faster insight into the water quality and related water parameters with steering possibilities aimed at healthy and safe cultivation, similar to the already existing climate computer for climate and lighting.
Project design/phases/approach.
The following work packages will be worked on within the project:
- Inventory of substances/parameters and microbiological parameters on field farms. Selection of the most important substances and determination of their limit values (in cooperation with the BCO). The limit values are investigated through multi-year field trials and experimental research in test greenhouse. Sensors for water parameters and climate are linked to sensors for plant growth and production. Effects of common water treatments such as oxygen injection but also storage in basins will be investigated.
- Selection of new sensors (spectral, germination) and development of these sensors. Testing of these sensors on field farms.
- Model based on limit values and sensor measurements. Application, analysis of data in practice and at pilot site Tomatoworld.
- Development of measurement system and dashboard. Development Al Model and database set-up.
- Demonstration of the model and dashboard on a field farm and Tomatoworld.
| Project number | W21004 |
|---|---|
| Start date | 01-01-22 |
| End date | 31-12-24 |
| Completed | No |
| Executor | SCFF, KWR and Tomatoworld |