What effect does the following line have on the poem?
the wheat waved and wilted under the wind

This looks like a you question, since i need the poem, maybe posting the poem will help me more

The wheat waved and wilted under the wind
It compares wind to wheat.
It shows the difference between wheat and a flower that wilts.
It imitates the whirring sound of the wind.
It creates a sense

Best thing to do, reread whatever you are writing on, and highlight things that are scientific or anecdotal. then pick which ever is easiest for you