P&D Identification: Leafminer

The other day, I spotted the tell-tale marks of a leafminer on the leaves of a pea plant down at plot #59. Here’s what the damage looked like:

May 2017 leafminer damage
The tell-tale tunnels that are the sign of a leafminer problem.

On the top of the leaf you can see the obvious tracks of leafminer tunnels, caused by larvae munching their way through the soft, tender leaf tissues. On the back the leafminer pupae are equally obvious.

According to the results of my Google-based research, this could be caused by any one of a small number of leafminer species. The damaged leaves will be less photosynthetically active, slowing the rate of plant growth. And whilst it’s not a drastic problem, short of using some pretty drastic chemical sprays, the only sensible course of remedial action is to remove the affected leaf section and add it to the council green waste bin. Which of course further limits the growth rate of the plant.

The damage seemed to be limited to one pea-plant, hopefully it’s under control for now, but I’ll be keeping a close eye on all our peas and sweet peas to make sure the problem doesn’t escalate.

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