In the heart of southern Brazil, where the Araranguá River meets the sea, a quiet revolution is taking place, one that could reshape the way farmers monitor and manage their most precious resource: water. A team of researchers, led by Analúcia Schiaffino Morales from the Universidade Federal de Santa Catarina, has developed an innovative Internet of Things (IoT) platform that promises to streamline water quality monitoring for rice cultivation, potentially saving farmers time, resources, and crops.
The Araranguá River estuary, a vital water source for local agriculture, faces significant challenges. Urban activities, coal mining, and the influx of saline water have compromised its quality, posing a threat to rice cultivation. High salinity levels can stunt rice growth, making real-time water monitoring a critical need. Traditionally, farmers have had to physically travel to the riverbank to manually test water quality, a process that is not only time-consuming but also inefficient.
Enter the IoT. The research team has prototyped a low-cost wireless sensor network that continuously monitors water quality parameters. Data is transmitted via a mobile phone network to a cloud-based platform, where it can be accessed by farmers through a dedicated smartphone application. This real-time monitoring system provides farmers with immediate insights into water quality, enabling them to make informed decisions about irrigation.
“The technology helps indicate whether the water is of quality to irrigate crops,” explains Morales. “This helps farmers decide whether to use that water to irrigate their fields, potentially saving them from crop losses due to poor water quality.”
The commercial implications for the agriculture sector are substantial. By automating water quality monitoring, farmers can reduce labor costs, optimize water usage, and minimize crop losses. Moreover, the system’s scalability means it could be adapted for use in other crops and regions, making it a versatile tool for precision agriculture.
The research, published in ‘Acta Scientiarum: Technology’, highlights the potential of IoT in transforming traditional farming practices. As Morales notes, “This system can be continuously monitored and show notifications to the user, making it an invaluable tool for modern farming.”
Looking ahead, this research could pave the way for more sophisticated IoT applications in agriculture. Imagine a future where sensors monitor not just water quality, but also soil health, pest infestations, and weather patterns, all feeding into a centralized platform that provides farmers with real-time, data-driven insights. This is not just about improving yields; it’s about creating a more sustainable, efficient, and resilient agricultural sector.
In the meantime, the Araranguá River estuary serves as a testament to the power of innovation. What was once a challenge has become an opportunity, a chance to harness the power of technology to secure our food future. And it all starts with a simple, yet profound, question: What’s in your water?

