Page "Hydroponics" Paragraph 74

Hydroponics have been used to enhance vegetables to provide more nutritional value.

A hydroponic farmer in Virginia has developed a calcium and potassium enriched head of lettuce, scheduled to be widely available in April 2007.

Grocers in test markets have said that the lettuce sells " very well ", and the farmers claim that their hydroponic lettuce uses 90 % less water than traditional soil farming .< ref > Murphy, Katie.

" Farm Grows Hydroponic Lettuce.

" < u > The Observer </ u > 1 December 2006