USDA Researchers Working To Conserve Fungicide Use

The video discusses the impact of the potato famine and the ongoing study of plant diseases like late blight. Researchers monitor pathogen changes to inform the industry about pesticide resistance. The goal is to help farmers use fungicides efficiently, reducing costs and improving crop protection. The economic impact of late blight is significant, with losses and control costs exceeding $6.7 billion annually.

What is the significance of monitoring changes in pathogens as mentioned in the text?

What challenges do farmers face regarding pesticide use according to the text?