Absorption of 15NH3 volatilized from urea by Citrus trees

  title={Absorption of 15NH3 volatilized from urea by Citrus trees},
  author={Rodrigo Marcelli Boaretto and Dirceu Mattos and Jos{\'e} Ant{\^o}nio Quaggio and Heitor Cantarella and Paulo C{\'e}sar Ocheuze Trivelin},
  journal={Plant and Soil},
Gaseous losses of ammonia (NH3) have been observed in citrus orchards when urea is surface-applied to the soils, and this loss might significantly limit the effectiveness of the nitrogen (N) fertilizer. However, a portion of the volatilized NH3 might be absorbed by the plants through the leaves. To quantify the contribution of the leaf absorption of 15NH3, a study with sweet oranges was conducted in two field areas where trees were grown at standard (480 trees ha−1) and high densities (617… CONTINUE READING
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