00681naa a2200217 a 450000100080000000500110000800800410001910000190006024501340007926000090021365000110022265000190023365000120025265000240026465000170028865300150030570000190032070000220033970000170036177300850037819195962012-03-20       2011    bl uuuu     u00u1 u    #d1 aCOMETTI, N. N.  aNitrate concentration in lettuce leaves depending on phosynthetic photon flux and nitrate concentration in the nutrient solution.  c2011  aAlface  aLactuca Sativa  aNitrato  aSolução nutritiva  aSombreamento  aHidroponia1 aMARTINS, M. Q.1 aBREMENKAMP, C. A.1 aNUNES, J. A.  tHorticultura Brasileira, Brasília, DFgv. 29, n. 4, p. 548-553, out./dez. 2011.