Effect of spraying with zinc Fe mixture and growth seasons on growth and flowers of Rosa hybrida L .c v. sultani .

Abstract

The object of study was to in vestiges the effect of spraying of Zinc and Fe-mixture at concentration(0+0,20+20,40+40,60+60)mg/Land growth seasons(autumn and spring) on growth and flowers of Rosa hybrida L.cv. sultani . A results of this study that the;1-Plants treated with Zinc and Fe- mixture at concentration 20+20 and 40+40 mg/L showed increase significant on all vegetative growth ,flowering, nitrogen, phosphorus and potassium .2-The results showed significant increase for the plants grown during the autumn season in plant height, length of the flower stem ,diameter of flower ,fresh and dry weight of flower .while plant grown during the spring season gave significant increase in the number of branches ,leaves ,flowers ,hastening and reduced in the number of days to initiation and development .3-The interaction between the Zinc and Fe- mixture and growth season showed significant increase in plant height, length of the flower stem ,diameter of flower ,fresh and dry weight of flower .While the interaction between the growth season and Zinc and Fe- mixture gave significant increase on number of branches ,leaves flowers and also hastening reduced in the number of days to flower bud and development.