Jal Rakshak
Domain
Agriculture
Impact
Water Saving
Focus
Automation
Scale
Rural
Context and Problem
In many farms, irrigation is still done manually, farmers check the soil by hand and water crops based on guesswork. This often leads to overwatering or underwatering, wasting both time and water. For example, a farmer might water plants every morning regardless of whether the soil is already moist. Over time, this not only increases water consumption but also affects crop health. With agriculture using nearly 70% of global freshwater, even small inefficiencies at scale become a major problem.
Approach & Solution
To solve this, we worked on an automated irrigation system that makes watering decisions based on real-time soil conditions instead of human estimation. The idea was simple: Only water the plant when it actually needs water. The system is designed to be affordable, easy to use, and scalable, making it practical for small farmers and everyday use cases like home gardening.
How it works?
The device continuously measures soil moisture using sensors placed in the soil. If moisture is above the required level → no action If moisture drops below a set threshold → water pump turns ON automatically For example, if the soil dries out during the afternoon heat, the system detects it and waters the plant without waiting for manual input. The system also includes: 1. A microcontroller (ESP32) to process data 2. A relay module to control the pump 3. A display + mobile interface for real-time monitoring and manual control This creates a simple but powerful loop: Sense → Decide → Act
Impact and Outcome
Testing showed clear improvements in both water usage and plant growth. The result showed how water usage varied over 10 days, with the smart system adapting to plant needs instead of using a fixed amount daily. The growth comparison showed that plants using the smart irrigation system grew faster and more consistently than those watered manually. In simple terms: Less water was wasted, plants received water exactly when needed, and growth became more stable over time.
