Interactive effect of growing substrates and fertigation in flowering attributes of rose cv. ‘Grand Gala’

An experiment were laid out during the years 2011- 2013 at Model Floriculture Center, G.B. Pant University of Agriculture and Technology, Pantnagar in Polyhouse to study the interactive effect of growing substrates and fertigation in Rose for commercial cut rose production in export market lead variety ‘Grand Gala’. For the experiment, five growing media viz., G₁, Soil: F.Y.M. (2:1), G₂, Soil: Vermicompost (2:1), G₃, Soil: Cocopeat (2:1), G₄, Soil: rice husk (2:1) and G₅, soil and four fertigation doses including various doses of NPK viz., F₁, 50 ppm NPK, F₂, 100 ppm NPK, F₃, 150 ppm NPK and F₄, No fertilizers along with their interaction were assessed for superior flowering attributes. Observations regarding flower quality characters were recorded during the course of investigation and statistically analyzed to find out optimum treatment combination for best results. Treatment (G₃F₃) was effective to increases number of flowers per m² (79.05) and treatment G₂F₃ gave maximum flower bud length (5.34 cm) followed by G₂F₂ (5.29 cm). For flower morphology related parameter maximum number of petals (30.50) was recorded with G₂F₃ followed by G₁F₁. While treatment interaction between nutritional doses and growing media for days taken from bud appearance along with vase life in tap water were non-significant.