The Effect Of Calcium On The Growth And Flowering Of The Rose Moss Portulaca Grandiflora L. Using Hydroponic System

Abstract

An experiment was conducted at Agriculture faculty - Kufa university during the 2020 to study the effect of different concentrations of calcium in nutritious solution in the vegetative and flowery growth characters in the rose moss plant Portuaca grandiflora L., by use hydroponics system, include five calcium concentrations (0, 61, 122, 185, 246 mg L-1 Ca). Results showed calcium concentrations 185 & 246 mg L-1 Ca led increase significant length of plant, number of leaves, weight of root dry, number of flowers and calcium percentage in leaves reaching (29, 29.5 cm ; 68.75 , 71.25 leaf .plant-1 ; 3.68 , 3.54 gm ; 9.75 , 9 flower .plant-1 ; 2.31 , 2.37%) respectively to two concentrations. The concentration 122 mg L-1 Ca increase significant in number of branches (10.5 branch. Plant-1), Also increase concentration 185 mg L-1 Ca in dry material percentage weight and the total chlorophyll (12.25% , 25.5 mg. 100 g-1 fresh weight).