Rhubarb with discoloured leaf problem

[pjmt]

Hello, we have a rhubarb plant where a leaf is turning brown / yellow, but the rest of the plant is okay. Please see the attached picture for a better idea what the problem looks like.

Now this picture was taken a few days ago, and looking at it this morning, the yellowing is spreading over the leaf. Should we pull the stick + leaf and chuck it in the dustbin, or is the plant missing something from its diet?

[Capsid]

Rhubarb leaves/stalks will die off normally which this looks like to me. I put mine in the compost bin.

[Flummery]

I think it's getting to the fag end. I normally don't pull sticks after mid July to give the plant time to fold up naturally. Then I leave the stalks and leaves on so it can build up its strength.

[pjmt]

It's the first time we have grown rhubard, so we where not expecting the plant to do that! Thanks all...

[Flummery]

Plants often do things you don't expect! Expect the unexpected.