00517nam a2200145 a 450000100080000000500110000800800410001910000190006024501230007926001140020265000100031670000120032670000190033870000140035720907432018-04-19       2016    bl uuuu     u00u1 u    #d1 aPACHECO, E. P.  aDetecting nitrogen variability at early growth stages of wheat by active fluorescence and NDVI.h[electronic resource]  aIn: INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE, 13., 2016, St. Louis. Abstracts... Madison: ISPAc2016  aTrigo1 aLIU, J.1 aLONGCHAMPS, L.1 aKHOSLA, R