01794naa a2200301 a 450000100080000000500110000800800410001902200140006010000250007424501090009926000090020852009170021765000090113465000130114365000150115665000280117165000130119965000290121265000100124165000190125165300170127070000230128770000160131070000180132670000230134470000190136777301060138620783792017-10-29       2017    bl uuuu     u00u1 u    #d  a1678-26901 aALMEIDA, R. E. M. de  aPalisadegrass effects on N fertilizer dynamic in intercropping systems with corn.h[electronic resource]  c2017  aCorn grain yield, nitrogen (N) fertilizer efficiency and distribution to corn alone and three forms of corn and palisadegrass (Urochloa spp.) intercropping implantation was investigated. A field experiment with 15N labeling fertilizer was performed in randomized block design. No form of palisadegrass intercropping implantation affected corn grain yield, total N accumulation and N use efficiency (NUE), which were 8.7 t ha-1, 205 kg ha-1 and 37% respectively. The palisadegrass produced on average 1.9 t of dry mass, absorbing a maximum of 6 kg ha-1 or 5.5% of N fertilizer during corn growing. Furthermore, the palisadegrass did not affect N fertilizer distribution in soil-plant system, in which 28.2% was recovered in the soil and 40.4% in the plants (corn + palisadegrass). The results show that for the three intercropping implantation methods the palisadegrass did not compete with corn for N fertilizer.  aCorn  aIsotopes  aNo-tillage  aNutrient use efficiency  aUrochloa  aFertilizante nitrogenado  aMilho  aPlantio direto  aUrochloa spp1 aOLIVEIRA, S. M. de1 aLAGO, B. C.1 aP. JUNIOR, C.1 aTRIVELIN, P. C. O.1 aFAVARIN, J. L.  tAnais da Academia Brasileira de Ciências, Rio de Janeirogv. 89, n. 3, p. 1917-1923, jul./set. 2017.