For more than a century, the Morrow Plots have generated one of the most comprehensive datasets in agricultural research. Continuous experiments on crop rotation, soil fertility, and management practices provide a rare long-term record of how agricultural systems respond to change.
The findings produced here continue to inform farm management decisions, guide resource stewardship, and advance the science of sustainable crop production.
Advance Your Research with Morrow Plots Data
Examine one of the longest-running agricultural datasets in the world. Analyze crop, soil, and management data spanning generations of continuous study.
Crop Yields and Farming Practices
For nearly 150 years, the Morrow Plots have revealed how farming decisions shape crop productivity over generations. Long-term research shows that sustaining yields depends on actively managing soil fertility, not simply planting crops year after year.
Key findings include:
- Maintaining soil fertility sustains crop yields.
Early research demonstrated that adding nutrients such as manure, phosphorus, and limestone could rapidly improve yields and restore exhausted soils. - Crop rotation and fertilization work best together.
Studies show that fertilizer alone cannot maintain productivity indefinitely; long-term success depends on combining nutrient inputs with crop rotation. - Modern technologies can reverse soil depletion.
Over time, improved crop hybrids and targeted nutrient management helped restore soil nutrients and significantly increase yields. - Weather and past conditions shape today’s harvest.
Long-term data reveal that crop yields reflect not only current conditions but also environmental patterns from previous years.
Together, these discoveries have transformed how farmers manage nutrients, rotate crops, and plan for long-term productivity — shaping agricultural practices used across Illinois and the global Corn Belt today.
What can we learn from this long-term dataset?
Explore 150 years of curated data and groundbreaking research from the Morrow Plots in the original Scientific Data paper, a Nature publication.
Soil Health and Long-Term Change
The Morrow Plots provide one of the world’s longest records of how soil changes under cultivation. These observations help researchers understand how to protect soil, the foundation of global food production.
Key findings include:
- Continuous cropping reduces soil organic matter.
Long-term cultivation without careful management leads to declines in soil carbon and fertility. - Diverse crop rotations protect soil resources.
More complex cropping systems help preserve soil structure and organic matter over time. - Improved management stabilizes soil systems.
After decades of loss, soil organic matter can be stabilized through better fertility practices and balanced management.
These findings demonstrate a central lesson of the Morrow Plots: healthy soil is essential for resilient agriculture and long-term food security.