Grower Services Water Management

​The SapIP-SMART Orchard System by Dynamax is an advanced, integrated plant bio-sensor network designed to enhance precision irrigation and crop stress management in orchards. It combines real-time data from multiple sensors to monitor plant and soil conditions, enabling growers to make informed decisions for optimal crop health and yield.

Core Components
Sap Flow Sensors: Measure the rate of water movement within plants, providing insights into plant water use and stress levels.​

Soil Moisture Sensors: Track soil moisture content at various depths, ensuring optimal irrigation scheduling.​

Dendrometers: Monitor fruit and stem growth, aiding in assessing plant development and predicting harvest times.​

Infrared Temperature Sensors (IRT): Detect canopy temperature variations, which are indicative of plant water stress.​

Weather Stations: Collect environmental data such as temperature, humidity, and evapotranspiration (ETo) rates.

Key Metrics and Insights
Crop Coefficient (Kc) and Stress Coefficient (Ks): By analyzing sap flow and weather data, the system calculates Kc and Ks values to assess plant water needs and stress levels.​

Soil Moisture Variability (SMV): Monitoring SMV helps in understanding soil water availability and its impact on plant health.​

Fruit Growth Forecasting: Using dendrometer data, the system predicts fruit growth rates, enabling estimation of harvest dates. For instance, a growth rate of 0.41 mm/day projected a harvest date of August 30 for apples reaching the 75 mm target size.

Irrigation and Stress Management
The system's data-driven approach allows for precise irrigation management. For example, in scenarios where vapor pressure deficit (VPD) increased, misting durations were adjusted (e.g., 5-6 hours from June 10-12 and 10 hours from June 15-17) to mitigate plant stress, as indicated by sap flow and Ks values.

Data Integration and Accessibility
All sensor data is transmitted wirelessly to the Agrisensors.NET platform, where it can be accessed, visualized, and analyzed. This centralized system facilitates real-time monitoring and decision-making for growers.