In the picturesque landscape of South Dakota, agricultural innovation is taking root at South Dakota Mines where a dedicated team of researchers is transforming traditional farming practices with cutting-edge technology. With a deep commitment to sustainability, these pioneering efforts are drawing from the state’s rich agricultural heritage to redefine the future of farming.
Leading this innovative project is Zach Karg, a doctoral student in mechanical engineering at South Dakota Mines, who is channeling his family farm experiences in Sterling, Colorado, into a groundbreaking venture aimed at revolutionizing modern agriculture. Alongside Karg, the team includes Carson Daly, a double major in mechanical and electrical engineering, Stirling Wallace, a senior mechanical engineering student, and Prasoon Diwakar, Ph.D., an associate professor. Together, they are at the forefront of a collaborative initiative known as the Advancement of Microbial Technologies for Sustainable Agriculture (AMiTSA).
AMiTSA is a National Science Foundation-funded initiative aiming to explore microbial fertilizers as alternatives to synthetic fertilizers, with efforts concentrated on precision agriculture. This substantial collaboration draws expertise from South Dakota Mines, South Dakota State University, North Dakota State University, and Sitting Bull College. Contact South Dakota Mines for more information.
At the heart of the project is the development of precision agriculture tools. Advanced sensors, drones equipped with multispectral cameras, and machine learning algorithms are being crafted to enhance fertilizer efficiency, reduce costs, and promote sustainability. Zach Karg explains, “Growing up on a farm in Colorado is what really drove my passion for this research. Fertilizer costs continue to rise while market prices don’t necessarily keep pace. We’re working on tools that can help producers apply nutrients more efficiently and get more value from what’s already in their soil.”
Beneath the hearty South Dakota soil, another layer of this technology is taking shape: cavity ring-down spectroscopy (CRDS). CRDS is a cutting-edge technique used to detect and quantify trace gases in the soil, offering valuable insights into the complex interactions within the soil ecosystem. This data-driven approach allows farmers to make informed decisions about where and how to allocate resources.
The innovation doesn’t stop there. The team is also developing microbial consortia in partnership with professors Rajesh Sani and Tanvi Govil. These consortia are designed to convert existing nutrients in the soil into soluble forms that are readily accessible to plants, paving the way for future farming methods that are both efficient and eco-friendly.
Carson Daly’s custom-made drones play a pivotal role in this technological tapestry. These drones are designed to capture a ‘bird’s eye view’ of nutrient deficiencies, potential water stress, and even anticipate the onset of plant diseases before they become visible to the human eye. Such innovation ensures that farmers have a comprehensive understanding of field conditions to optimize crop yields.
In South Dakota, where the spirit of agriculture and innovation merge, the holistic approach fostered by the AMiTSA project is more than just a scientific endeavor; it’s a testament to the state’s commitment to pioneering sustainability and unleashing the full potential of its natural resources.
Wallace states, “We’re looking at soil health from multiple angles. The goal is to understand what creates a healthy soil environment and how we can help farmers make better decisions while using fewer resources.” This forward-thinking mindset is reflective of a broader trend within South Dakota’s agricultural landscape, where technology and tradition coexist in harmony.

Stirling Wallace, a key team member, works on optimizing precision agriculture tools.
Sustainable agriculture in South Dakota is not just a technological transformation; it’s a community effort. The research team realizes the importance of engaging with local farmers to ensure that these emerging technologies are both practical and applicable. By doing so, they hope to bridge the gap between inventive solutions and real-world solutions that enhance efficiency on the ground.
As the project progresses, the team is gearing up for direct interaction with South Dakota’s farmers, working through the summer to perfect their tools and gather critical feedback. “Having the three of us on the project is instrumental,” Karg notes. “We can actually go out and talk with the farmers and ask them if they would adopt this technology and what changes we would need to make.” This engagement strategy is crucial for aligning research outcomes with farmers’ day-to-day needs, ensuring that technological advances translate into tangible benefits.
If the team’s ambitious goals come to fruition, the impact on South Dakota’s agriculture could be profound. By embracing the combination of advanced sensor technology, microbial innovations, and data-driven insights, South Dakota Mines is positioned to make a lasting impact on sustainable agriculture practices not only within the state but across the nation.
Through persistent innovation and an unwavering dedication to environmental stewardship, South Dakota Mines and its partners are indeed sowing seeds for a more sustainable future.