Pythium stalk rot — Maize
Pythium aphanidermatum
Symptoms
Basal internodes become soft, water-soaked and dark. Infected stalks may twist before the plants lodge. The stalk loses its structural strength and may collapse. Plants can remain alive until the vascular bundles become extensively damaged. The disease may occur before flowering.
Recommendations
Metalaxyl 8% + Mancozeb 64%
(WP)
Remove fallen stalks and drench the base of surrounding healthy plants (lower 1–2 internodes and root zone)