@article {1699, title = {Options for reducing the negative effects of nitrogen in agriculture}, journal = {Science in China Series C-Life Sciences}, volume = {48}, year = {2005}, pages = {861-870}, keywords = {ammonia volatilization, condensed tannins, lotus-corniculatus, lowland rice, n2o emissions, nitrification inhibitors, nitrogen in agriculture, options for reducing the negative effects, oxide emissions, trail hoses, use efficiency, wool production}, author = {Freney, J. R.} }