Earlier quoted context omitted.
I reckon you could skip spraying it if you were going to eat it anyway. Did you know that wheat in the US is sprayed with glyphosate right before harvest? It causes all the wheat to dry evenly, avoiding the need to cut down the wheat and windrow it for drying. This means extra weeks in the growing season to squeeze another crop in.
How would you squeeze another crop in?
By planting one after harvesting the wheat...