How important is the thin layer of crust on earth that we call soil? Dr. Rob Mikkelsen, Yara North America's Director of Agronomy, and soil science expert Professor John Havlin help us understand. Dr. Havlin's work has not only revolutionized grape cultivation in North Carolina but also advanced sustainable farming practices worldwide.

In this episode, we discuss the evolution of soil fertility practices, the impact of nutrient management on crop quality, and the significance of long-term agricultural trials. We'll also delve into Professor Havlin's intriguing research on wine grapes and how soil health drives the growing wine industry in North Carolina.

Nutrient management can become an opportunity for environmental stewardship.

Some Takeaways:

• Soil science is crucial for sustainable agriculture and the future of food production.
• Nutrient management and long-term trials play a significant role in improving farming practices.
• The book 'Soil Fertility and Fertilizer' has evolved over the years to address changing agricultural practices and environmental concerns.
• There is a need for more young people to pursue careers in soil science and agriculture.
• Teaching quantitative skills in soil science is a challenge but essential for understanding the science behind soil health and fertility. The work with wine grapes in North Carolina has been the most exciting and rewarding for John Havlin.
• Nutrient management, particularly nitrogen application, plays a crucial role in improving the quality of wine grapes.
• Soil health and fertility are essential for successful grape growing.
• The grape industry in North Carolina has grown significantly in the past few decades.

Dr. Havlin holds the position of professor and extension specialist in Crop & Soil Sciences at North Carolina State University. He has also served as the past president of the Soil Science Society of America. Dedicated to raising awareness about soil's crucial role, Dr. Havlin's efforts have contributed to the establishment of the House of Representatives Soils Caucus and a $4 million educational exhibit at the Smithsonian, which opened in 2008. This exhibit aims to educate the museum’s six million annual visitors on how soil is fundamentally connected to human health, environmental sustainability, and planetary well-being.

To learn more check out these links:

• Document for the Carolina Geological Society (2022)
• Journal article summarizing some of our vineyard nutrient management research (2022), which will serve as the basis for an Extension product coming out later this year.