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Nitrogen Fertilization as Ammonium or Nitrate-N on Hippeastrum hybridum Bulb Growth
Hippeastrum (Hippeastrum hybridum), a native of Central and South America, is a bulbous ornamental flowering plant in the Amaryllidaceae family. However, the correct balance of NH4 to NO3nitrogen in a fertilizer mix for Hippeastrum plants is largely unknown. Nitrogen was applied 2x weekly following irrigation at either 0.6 g (high), 0.3 g (medium) or 0.15 g (low) total N every four months. Nitrogen was supplied in different combinations of NO3 and/or NH4. Nitrate:NH4-N ratios were either 100%doi:10.4236/as.2015.612148 fatcat:k4iqgukxofh2pouknqqk7cq37m