Thanks. I was applying that question to control of weeds with green seeds, some of which have been remarkably persistent. But with changes wrought by me, such as removing trees or burning weeds and brush, one wonders at the consequent germination. Yes, burning and sunlight do make big differences in dormant seed expression, the karrakinolide hormones in smoke being key.
The seed bank of weeds in the soil is remarkable. Some plants are incredibly prolific generating seeds and the seeds remain viable in the soil for years. I’ve got a weed called “poa annua” in our lawn that is like that. Very difficult to eradicate.