I'm not sure I am reading your question correctly but if your referring to the few rows left standing after the bulk of the field has been harvested it is to have a sampling of the field to show crop damage caused by deer etc.
Answer #2, from Iowa Yes, vague question. Some corn is actually cut off a few inches above the ground to make what is called "silage" to feed cattle. The entire plant is used. Nothing is left except short stubble in the field. This is done earlier than picking, when the corn is still green. However, when corn is picked, only the ears are removed and the bent over stocks are left in the field. If a farmer uses part of a field for silage, it will be cut, leaving the other part to mature and be picked at a later date.
Erosion.
Many farmers throughout agricultural areas of the US follow this practice.
No-till or reduced-till farming, fallowing, etc.
If You Ever Leave Me Standing was created in 2000.
No-till or reduced-till farming, fallowing, etc.
A group of farmers leave their homes to search for more fertile lands elsewhere.
Bing was baptized a Roman Catholic, and maintained a devout standing within that church his entire life. Whether that makes him a "Christian" I'll leave up to someone else.
Yes, most do.
Farmers and Dimesticated workers
No. The goalie only has to leave the field if he/she is given a red card, same as any other player.
In chapter 5 for The Grapes Of Wrath, the owners of the land suggest the tenant farmers to move to California.
Head north.