Development and application of coating agent to solve the potato seed rot disease

Potato, ranked as the fifth most economically important crop and serving as a major food source, faces challenges when potato is sown due to the problem of seed potato rot. In this study, we prepared Fludioxonil · Difenoconazole 4% FS as a potent inhibitor of potato seed rot disease using wet sand grinding method and analyzed the growth and yield of potato in the field. The results showed that Fludioxonil · Difenoconazole 4% FS had uniform color and superior performance after coating potato tubers, and showed a significant promotion in emergence rate, plant height and root length compared to Difenoconazole · Fludioxonil · Thiamethoxam 27% FS and CK. In addition, Fludioxonil · Difenoconazole 4% FS significantly increased starch content and decreased reducing sugar content. This study provided a low-dose seed treatment agent for controlling potato rot disease, aligning with the strategy of pesticide reduction.