As one of those who asks farmers to squat in their crops, I would like to suggest three alternatives.......
Lying down in the crop (a fave for sugar beet growers when the crop is just emerging)
Getting the photographer to lie down himself and then shoot through the canopy upwards to get the crop in foreground and person in the background (depth of field can be an issue here!)
Take some step ladders and look down on the grower and the crop...........
(but as always, I do tend to take the squat shot for safety reasons as well!)
Come on FW lets see if you can get more lying photographers than squatting farmers in the Cereals Event feature!