These plots are beautiful! I once dared to plant potatoes at home. The plants grew up to a certain point very beautifully, but then they just started to die. I checked under the leaves of some of them and no pests were present, but still each and every potato plant died. I remember planting corn at the same time as the potatoes and the corn did grow beautifully.
Why did my potato plants die? do you have any ideas? I remember they started dying from the top, from the new shoots and then the little leaves below continued to die.
They might have gotten potato blight. It's the same disease as tomato blight.