8 March 2026
Oilseed rape and the year the pigeons won a headland
A low strip along a wood is not always a variety failure. Sometimes it is a roost.
Last winter a holding near the Welsh border brought us a rape field that had “failed on the east side”. The tickets were modest. The monitor, which had run for once, showed a dark strip against the wood. The temptation in the kitchen was to blame establishment, or the hybrid, or the slug pellet timing.
The walk told a duller story. The east headland sat under a roost. Pellets of rape on the soil in February had been a feast. The body of the field, twenty metres in, was a different crop. Averaging the two made the variety look weaker than it was on the land that could actually carry it.
We still wrote the low strip into the pack. It is real yield lost. The decision, though, was not “drop the variety”. It was whether that headland should be planted at all, whether a trap crop belonged on the wood edge, or whether the field’s east boundary should come out of rape in the rotation.
Yield reading is full of these unglamorous causes. Pigeons, a blocked drain, a late second spray because the neighbouring silage was still down. Naming them keeps winter planning from becoming a catalogue of products.