Effect of Spraying with Normal and Nano Iron on the Growth and Flowering of Petunia Plant Petunia hybrid L.

Abstract The research was carried out in lath house of the Department Horticulture and Landscaping - College Agriculture / University Anbar during two growing season 2021-2022, order to study effect spraying with normal nano iron on growth flowering petunias. Normal used concentrations (0, 50 100 mg L -1 ), which represented by (F0, F1 F2) respectively, while sprayed 10 20 ) it (NF0, NF1 NF2) respectively. A randomized complete block design conduct a factorial experimental (RCBD). results showed that treatments iron, especially at concentration F2 (100 contributed achieving best for characteristics (plant height, number branches, leaf area, dry weight shoot, chlorophyll content leaves, flowers number, weight, flower diameter, days until wilt) reached (12.92 cm, 6.39 plant branch , 891.73 cm 2 6.73 g, 12.98 g 191.20 69.3 9.20 7.18 day) While not significantly affect carbohydrate leaves. Spraying NF2 (20 achieved highest values traits shoot flowers, wilt, 12.67 52.6 branches 854.43 6.60 12.64 07.9%, 182.94 3.32 6.61 diameter affected when iron. On other hand, interaction between factors significant all studied except