01753naa a2200277 a 450000100080000000500110000800800410001902200140006002400390007410000190011324501010013226000090023352009100024265000090115265000210116165000100118265000340119265000160122665000170124265000330125965300280129265300190132070000200133970000170135977300990137620241422017-07-21       2015    bl uuuu     u00u1 u    #d  a1532-24167 a10.1080/00103624.2015.10693152DOI1 aFAGERIA, N. K.  aAgronomic evaluation of coated and common urea in upland rice production.h[electronic resource]  c2015  aTwo greenhouse experiments were conducted simultaneously to evaluate polymercoated and common urea in upland rice production. The nitrogen (N) levels used for both the N sources were from 0 to 400 mg kg−1 of soil. Maximum grain yield was obtained with the addition of 167 mg N kg−1 polymer-coated urea and 238 mg N kg−1 common urea. Maximum value of other plant traits was obtained with N applied from 233 to 313 mg kg−1 depending on plant traits and N source. Nitrogen-use efficiency (NUE) decreased with increasing N rate in the two N sources. Based on results of growth, yield, and yield components, and NUE it can be concluded that the N sources were equally effective in upland rice production. Base saturation, pH, and exchangeable calcium (Ca) increased with increasing N rates while iron (Fe), manganese (Mn), and copper (Cu) contents decreased with the increasing N rates.  aRice  aYield components  aArroz  aCaracterísticas agronômicas  aNitrogênio  aOryza sativa  aPropriedade físico-química  aNitrogen-use efficiency  aPolymer-coated1 aNASCENTE, A. S.1 aSTONE, L. F.  tCommunications in Soil Science and Plant Analysis, New Yorkgv. 46, n. 17, p. 2152-2161, 2015.