Effect of Foliar Application of CPPU and Two Type of Mulching Soil Pots in Growth and Flowering of Rose Plant (Rosa Hybrida L.)

Abstract

Abstract The study was conducted in the Lath house of the College of Agriculture / University of Kirkuk / Agricultural Research and Experiment Station, for the period from September 15/ 2021 to Until the end of April / 2022, The research included studying the effect of spraying with a growth regulator (CPPU) at concentrations of (C1 0, C2 30, C3 60) mg L−1 with two sprays, the first one a day after the seedling rotation process, and the second one a week later, The first spray, And the type of mulching soil pots (bark and wood of eucalyptus trees) on the growth and flowering of Rosa hybrid L, The factorial experiment was conducted according to the (R.C.B.D), with a split experiment. The effect of spraying with the growth regulator CPPU at a concentration of 30 mg.L−1 led to a significant increase in the number of leaves, 167.66 leaves.plant−1 and the flower diameter was 13.91 cm, Plants grown in pots covered with eucalyptus bark obtained the highest significant values for some of the studied traits, As an increase in the number of developing branches, 11.00 branch.plant−1 and flower diameter 14.38 cm, The interaction between CPPU spraying and the type of mulching soil pots had a significant effect.The spray increased with 30 mg.L−1 of CPPU and plants growing in pots covered with eucalyptus bark, The number of developing branches is 11.50 branches.Plant−1 and flower diameter is 14.80 cm.