news, features, articles and disease information for the crop industry

Seed Rot

© Purdue University, Plant and Pest Diagnostic Laboratory

Pathogen(s) causing disease:

Pythium, Fusarium, Diplodia, Rhizoctonia, Penicillium spp. and other soilborne bacteria.


The seed rots prior to germination.


Favorable among wet and cool soil growing conditions in the spring. Soil temperatures 55 F or lower favor seed rot because germination is delayed. Seed rot is often more severe in early planted or no-till/reduced tillage fields because of cool soil temperatures. 


Fungicide seed treatment provides protection for 2-3 weeks. Plant when soil conditions are warmer and drier, and ensure planting depth is not too deep.


Purdue University
Iowa State University

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