Integrating IoT into hydroponic saffron cultivation
Source: VFD.com
Integrating IoT into hydroponic saffron cultivation Saffron (Crocus sativus) remains one of the most geographically confined crops in the world — dependent on a soil medium, vulnerable to climate unpredictability, and burdened by a labour-intensive harvest, all of which make industrial-scale production impractical. This research proposes an IoT-enabled ebb-and-flow hydroponic system for saffron, grown alongside microgreens as a companion crop.
A survey of 90 research articles was conducted to establish the nutrient solutions and cultivation methods reported for saffron and microgreens to date. The proposed architecture uses low-cost growth chambers and a nutrient tank instrumented with DHT11 temperature/humidity, pH, turbidity and ultrasonic sensors, red and blue LED strips, and water and air pumps, driven by an Arduino Uno and NodeMCU ESP8266 with real-time logging to ThingSpeak.
Each sensor was selected for the precision saffron demands: DHT11 to hold 18–22°C and 50–70% humidity across corm dormancy and flowering, a pH sensor to maintain the solution between 6.0 and 7.0 (beyond which solubility degrades sharply), turbidity sensing to detect contamination, and ultrasonic sensing to track plant height without disturbing stigma measurement. The study thus presents a viable, novel, low-cost and environmentally friendly approach to cultivating saffron outside its traditional geographical boundaries, combining hybrid ebb-and-flow hydroponics, organic nutrient inputs, and real-time IoT monitoring to improve sustainability and accessibility.
Why this matters: For operators, this is a water-management story. The useful signal is that direct substrate measurements can help cut drain loss materially without giving up yield or fruit quality, which is exactly the kind of controllable efficiency gain a facility can build on.
Frequently Asked Questions
Why does substrate sensing matter in free-drain strawberry systems?
Because drain percentage tells a grower what already happened, while substrate moisture and EC data show root-zone conditions directly. That makes it easier to cut water loss without guessing.
What is the operator takeaway from this trial?
If the thresholds are understood well enough, growers can reduce drain water materially while protecting yield and fruit quality, which makes sensing an operational tool instead of a reporting tool.
