"Crop Duster's Lament" is "The Grape Pickers Tragedy"
I'm sorry, but the story line doesn't make any damned sense. Why would they be dusting during harvest? I could see it if it was a mistake -- they dusted the wrong field. And I can easily see that the growers wouldn't quibble at the death of a simple grape picker. But the story just doesn't hold up as written.
Sorry. There is "truthiness," but no truth. Unless someone can enlighten me about crop-dusting practices.