The Effect of Inoculation with Mycorrhiza Fungi and Organic Fertilization on the Content of Plant Nutrient-Absorbing and Heavy Elements of Chrysanthemum Calendula Officinalis L.

Abstract

The experiment was carried out in the wooden canopy of the Department of horticulture and garden Engineering - Faculty of Agriculture-Tikrit University - during the agricultural season 2020-2021 in plastic pots and planting Chrysanthemum seedlings, the seeds of which were planted in Cork dishes on 10/1/2020, transferring seedlings to plastic pots with a diameter of 14 cm. When forming from 5-4 real leaves. 1-Use Two-level compost (with and without compost) manufactured from printing papers in a ratio of (1: 3), i.e. 3 paper compost and 1 soil. It will be served by an industrial batmoos with a ratio of (2-1). And mixed soil for (Control). 2-inoculation with mycorrhiza fungus of the type Glomus mosseae at two levels (with and without inoculation. 3-use chemical fertilizer with three levels (without fertilizer, half recommendation and full recommendation) It produces 18 transactions that are repeated three times to make 54 trial units. The results showed that inoculation with mycorrhiza fungi led to a significant increase in the dry weight rate and the relative chlorophyll content of the Chrysanthemum plant, the favorable increase for pollinated plants over non-pollinated plants was (32.3, 7 %) the increase in the absorbing elements nitrogen, phosphorus and potassium (37, 37, 33.3 %) respectively, while inoculation with mycorrhiza fungi reduced the absorption of heavy elements by (45.7,60,40,16.6 %) for the elements zinc, lead, cadmium and arsenic respectively, The results showed the importance of inoculation with mycorrhiza fungi in increasing plant growth by increasing the efficiency of absorption of plant nutrients and reducing the absorption of heavy elements.