Could have been, I never checked the pH. Most of the rest of the garden did OK.
I would almost bet your soil is alkaline................
I have grown potatoes successfully in Colorado and Florida. The pH is important and I use sulfur or iron sulfate in the planting trench. But the biggest thing is that potatoes need high phosphorus for root development. Too much nitrogen makes the plant put all the energy into leaf growth. The fertilizer numbers are “N-P-K”, Nitrogen, Phosphorus, Potassium. I use bone meal (calcium and phosphorus) in the planting trench at planting time and use a water soluble 10-30-20 fertilizer out of a watering bucket sprinkler over the leaves and ground about every two weeks, especially around when flowers develop on the plants because that is the time the plant is putting energy into the potatoes before the vine and leaves turn yellow and die back. I wait until the plant dies back before digging up the potatoes.