Question: Why are some of my spuds looking pretty ugly?

Answer: While Rhizoctonia sounds a likely culprit, it is a mistake to assume a single cause just from looking at a photo. Netted scab (Streptomyces spp.) can cause similar symptoms. Sending a few samples to a plant pathology laboratory is really the only reliable way to identify the culprit.

Some studies have even suggested that elephant hide symptoms can simply be a physiological response to plant stress. Environmental conditions such as excess humidity, or high organic matter around the tubers during development can trigger the disorder.

In Issue 05 of PotatoLink magazine, the Spud GP provides a well-considered response with a list of preventative strategies for the future.

Contact the spud GP with your queries by emailing info@potatolink.com.au