Evaluation of Different Growing Media and Nitrogen Fertilizer on Some Morphological Traits in Spathiphyllum wallisii L.

In order to evaluate the different growing media and nitrogen fertilizer (urea) on some morphological traits of Spathiphyllum plant, an experiment was carried out in split plot arrangement based on completely randomized design in three replications in greenhouse conditions in 2018. The main plot consisted of different growing media including T1: Leaf-mold, T2: Vermicompost and T3: A mixture growing medium (peatmoss 20% + cocopeat 50% + perlite 30%) and the subplot was different amounts of urea fertilizer as 0, 1, 2, 3 and 4 g/L. Results showed that the mixture growing medium plus 2 g/L urea fertilizer caused significant positive effects on all traits. According to the results of interaction effects, the highest shoot fresh weight (26.5 g/plant), shoot dry weight (3.75 g/plant), root fresh weight (35.5 g/plant), root dry weight (4.87g/plant), length petiole (55.1 cm), and leaf number (12.1) were obtained in the mixture growing medium plus 2 g/L urea fertilizer, while the traits were least in all the studied growing media plus 0 g/L urea fertilizer. Urea fertilizer from 0 to 2 g/L increased the shoot dry weight and petiole length while urea fertilizer in 3 and 4 g/L decreased them. The growing media with EC of 2 dS/m, high porosity, and high water holding capacity can have significant effects on improving morphologic traits of Spathiphyllum plant.