Standing in front of the plant
A growing season is a long experiment that runs once a year and cannot be paused. What a breeder notices in that window — structure, vigour, timing, how a line responds to a cold night or a hot week — is data that no later analysis reconstructs.
Most of it never becomes a number. It becomes a decision.
The same line, in a different place
Genetics express themselves against an environment. Move a stable line up a valley and it behaves differently; the genetics have not changed, and the plant in front of you has.
That is why longitudinal observation matters more than a single strong season. One year is an anecdote. A decade is a pattern.
Field observation is not a rougher version of measurement. It is a different question, asked of a whole plant.
