Potato Scab Control Learn What Causes Potato Scab And How To Fix It
What is Potato Scab? Once you’ve unearthed scabby potatoes, you may ask yourself, “What causes potato scab?”. Unfortunately, the source of infection isn’t a rare, short-lived pathogen; it’s a soil bacteria that can remain in the ground indefinitely as long as decaying plant matter is left behind. The bacteria, Streptomyces scabies, thrives in soils with a pH above 5.5 and temperatures between 50 to 88 F. (10-31 C.). The growing conditions needed by potatoes are very close to the conditions that scab prefers....