Crops Sans Nitrogen Fertilizer?

On June 28th 2006, Nature published an article entitled 'Crops could make their own fertilizer'. Here is the abstract:

Plants that build homes for bacteria could do without chemical nitrogen.

Plant geneticists have induced plants to form 'fertilizer factories' without the aid of bacteria that are normally crucial to the process. If the technology can be transferred to plants such as wheat or rice, industrial fertilization of these crops could be reduced or even abolished.