Site specific application of Nitrogen based on foliar application or fertigation was used in combination with three depth of planting (10, 15 and 20 cm) in a factorial experiment based on complete randomized block design with three replications in the years 2011 and 2012 in Research Station of Horticultural Sciences, College of Agriculture and Natural Resources, University of Tehran. Results showed that Nitrogen application in either form had no effect on plant criteria such as number of flowers per unit area, flower fresh and dry weight, stigma fresh and dry weight, number of daughter corms per unit area and daughter corms fresh and dry weight. However, Planting depth showed a significant effect on the above mentioned criteria. In both years, planting depth of 15 cm showed superiority in the number of flowers per unit area, flower fresh and dry weight and stifma fresh and dry weight except on number of daughter corms per unit area, corm fresh and dry weight. Increasing depth of planting corm 15 to 20 cm caused a reduction in number of flowers per unit area, flower fresh and dry weight and stigma fresh and dry weight. However, in second year, number of daughter corms per unit area was enhanced by reducing depth of planting to 10 cm recording an increase of 23% in number of daughter corms per unit area. Interaction effects of nitrogen application type and planting depth had no significant effect on all measured criteria.

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