TY  - JA
AU  - Vitousek,P.M.
AU  - Naylor,R.
AU  - Crews,T.
AU  - David,M.B.
AU  - Drinkwater,L.E.
AU  - Holland,E.
AU  - Johnes,P.J.
AU  - Katzenberger,J.
AU  - Martinelli,L.A.
AU  - Matson,P.A.
AU  - Nziguheba,G.
AU  - Ojima,D.
AU  - Palm,C.A.
AU  - Robertson,G.P.
AU  - Sanchez,P.A.
AU  - Townsend,A.R.
AU  - Zhang,F.S.
TI  - Nutrient imbalances in agricultural development
SN  - 1095-9203
PY  - 2009///
CY  - Washington, DC (USA)
PB  - AAAS
KW  - AGROVOC
KW  - Nutrient cycles
KW  - Agricultural development
KW  - Farming systems
N1  - Peer review
N2  - Nutrient cycles link agricultural systems to their societies and surroundings; inputs of nitrogen and phosphorus in particular are essential for high crop yields, but downstream and downwind losses of these same nutrients diminish environmental quality and human well-being. Agricultural nutrient balances differ substantially with economic development, from inputs that are inadequate to maintain soil fertility in parts of many developing countries, particularly those of sub-Saharan Africa, to excessive and environmentally damaging surpluses in many developed and rapidly growing economies. National and/or regional policies contribute to patterns of nutrient use and their environmental consequences in all of these situations (1). Solutions to the nutrient challenges that face global agriculture can be informed by analyses of trajectories of change within, as well as across, agricultural systems
DO  - https://doi.org/10.1126/science.1170261
T2  - Science
ER  -