What's Happening?
Kansas corn growers are facing significant challenges this season due to the spread of tar spot, a disease exacerbated by the cool and wet weather conditions. According to Rodrigo Onofre, a row crop specialist at Kansas State University, tar spot has
been confirmed in three northeast Kansas counties. The disease thrives in the current weather conditions, which include high humidity and prolonged leaf wetness. Tar spot is characterized by black, raised lesions on corn leaves and can severely impact yields, potentially reducing them by as much as 56 bushels per acre in susceptible hybrids. Onofre advises growers to monitor their fields weekly and understand the disease ratings of the hybrids they plant. The Kansas Corn Disease Network, a collaboration between Kansas Corn, the K-State Department of Plant Pathology, and other partners, is actively monitoring the situation across 35 counties.
Why It's Important?
The spread of tar spot poses a significant threat to Kansas's agricultural economy, particularly for corn producers. The disease can lead to substantial yield losses, which could exacerbate financial pressures on farmers already dealing with fluctuating grain prices. Effective management of tar spot is crucial to mitigate these losses. The Kansas Corn Disease Network's efforts to provide timely updates and guidance are vital for producers to make informed decisions about disease management. The situation underscores the importance of disease monitoring and the use of appropriate fungicides to protect crops. The potential economic impact extends beyond individual farmers, affecting the broader agricultural supply chain and market stability.
What's Next?
Kansas corn growers are advised to continue monitoring their fields closely and to apply fungicides at the recommended growth stages to manage tar spot effectively. The Kansas Corn Disease Network will continue to provide updates and support to producers. As the season progresses, growers must also prepare for the potential arrival of southern rust, another disease that could impact crops later in the summer. The network's ongoing collaboration with industry partners aims to enhance disease tracking and response strategies, helping to safeguard the state's corn production.
