Department of Horticulture, G.B. Pant University of Agriculture and Technology, Pantnagar 263 145, Uttaranchal
*Corresponding author’s E-mail:anilksingh-hort@rediffmail.com
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A field experiment was conducted on rose cv. Gruss-an-Teplitz. Treatment consisted of two levels of farmyard manure (0 and 5 kg/m2), two levels of Azotobacter (inoculated and uninoculated) and three levels of nitrogen (20, 40 and 60 g/m2). Treatments were applied on two and subsequently three years old plants. Significant increase in N, P and K, leaf area index, plant height, number of petals/flower, weight of flowers/plant during first flush and yield of flower were recorded with application of farmyard manure (5 kg/m2), Azotobacter and higher dose of nitrogen (60 g/m2). Application of farmyard manure and higher doses of nitrogen (60 and 40 g/m2) delayed flowering of rose, whereas inoculation of Azotobacter exhibited early flowering. Maximum diameter of flower, average dry weight of flower, number of flowers/plant during first flush and weight of flowers/plant during second flush were recorded with application of farmyard manure (5 kg/m2) and nitrogen (60 g/m2), whereas inoculation of Azotobacter failed to exert any striking effect on these parameters.
Rose, Azotobacter, nitrogen, farmyard manure
