The genetic engineering of nitrogen fixation.
D002523:Edible Grain; D005308:Fertilizers / Q000191:economics; D005818:Genetic Engineering; D007709:Klebsiella / Q000235:genetics; D009586:Nitrogen Fixation; D009591:Nitrogenase / Q000235:genetics; D010944:Plants / Q000235:genetics; D012231:Rhizobium / Q000235:genetics
D005308:Fertilizers; D009591:Nitrogenase