[A. Fallowfield]

Some of my neighbour's spuds, he dug in lots of manure earlier this year and had very tall tops. Pretty much the entire crop look like this, any ideas?

[m1ckz]

looks like hes forked them

[Rampant_Weasel]

yup, or massive splits

[DD.]

Looks like erratic (very) irrigation, either by hand or nature.

Here's two links, the first our very own, further down this page:

http://www.allotment-garden.org/garden-diary/551/potatoes-onions-garlic-strawberries/

then

http://www.potato.org.uk/department/knowledge_transfer/pests_and_diseases/ref.html?item=38