The difference VRI technology creates is the ability to vary application depths along the length of the irrigator to match the soil’s ability to retain the nutrients from the effluent.
Effective effluent application requires a knowledge of the volume and nutrient content of the effluent being distributed, the area necessary to handle the effluent effectively, and of soil properties and groundwater conditions.
A key principle is the application of effluent only to soils with sufficient water holding capacity, at suitable application rates to allow infiltration.
As the Precision VRI system controls every individual sprinkler along the length of the irrigator; tracks, drains and troughs can be avoided. Buffered avoidance zones, as required by many consents, can be placed around environmentally sensitive areas and waterways.
Solid particles within the effluent will need to be screened/filtered to prevent nozzle blockages on the irrigator. New, custom-designed filtered valves are an option with Precision VRI systems to help prevent valve and nozzle blockages.
The Precision VRI system comes with the advantage of online monitoring and reporting. The new online tool, which is available for the coming irrigation season, allows farmers to view how much effluent has been applied through the irrigator, when and where. Reports can be easily produced by farmers to provide third parties with proof of placement.
Smart effluent management with Precision VRI can therefore lighten a farm’s environmental footprint and improve the bottom line at the same time. The system is available through Zimmatic dealers. It is recommended that they be consulted to discuss the suitability of the new filtered valves for your filtered effluent supply.
