00622nam a2200193 a 450000100080000000500110000800800410001910000190006024500740007926001280015365300110028170000210029270000200031370000170033370000200035070000200037070000190039070000190040910305412013-08-19       2008    bl uuuu     u00u1 u    #d1 aINAMASU, R. Y.  aUsing active sensor and ultrasound readings to assess plant N status.  aIn: INTERNATIONAL CONFERENCE ON PRECISISON AGRICULTURE, 9., 2008, Denver. Abstracts... [Denver: s. n.], 2008. p. 181.c2008  aEvento1 aTANGERINO, G. T.1 aPORTO, A. J. V.1 aLUCHIARI, A.1 aSCHEPERS, J. S.1 aSHANAHAN, J. F.1 aFRANCIS, D. D.1 aSIMÕES, M. S.