A near Infrared photo of a hay field between Lubenham and Market Harborough, in Leicestershire, UK. The photo was taken using mostly red light at end of the visible spectrum, rather than true infrared light.
From Wikipedia: http://en.wikipedia.org/wiki/Hay
Hay is grass, legumes or other herbaceous plants that have been cut, dried, and stored for use as animal fodder, particularly for grazing livestock such as cattle, horses, goats, and sheep. Hay is also fed to pets such as rabbits and guinea pigs. Pigs may be fed hay, but they do not digest it as efficiently as more fully herbivorous animals.
Hay is fed when or where there is not enough pasture or rangeland on which to graze an animal, when grazing is unavailable due to weather (such as during the winter) or when lush pasture by itself is too rich for the health of the animal. It is also fed during times when an animal is unable to access pasture, such as when animals are kept in a stable or barn.
White Balance adjusted in ACR
Blue to White Gradient map applied in Multiply blend mode in PS CS5