Univrsity of Tehran Press Iranian Journal of Field Crop Science 2008-4811 50 3 2019 10 23 Effect of foliar application of zinc, iron, and manganese on morphological, and phytochemical traits of hyssop (Hyssopus officinalis L.) Effect of foliar application of zinc, iron, and manganese on morphological, and phytochemical traits of hyssop (Hyssopus officinalis L.) 199 212 75067 10.22059/ijfcs.2018.238654.654357 FA Mohammad Amini Payame Noor University Kamal Sadatasilan Payame Noor University Saeid Yosefzadeh Payam Noor University Sirus Mansurifar Payame Noor University Journal Article 2017 07 29 To investigate the effect of iron, zinc, and manganese on morphological and phytochemical traits of hyssop, an experiment was conducted as a randomized complete block design with three replications in 2016. Treatments consisted of control, foliar application of iron, zinc, manganese, iron + zinc, iron + manganese, zinc + manganese and iron + zinc + manganese. The foliar application had a significant effect on all studied traits. Foliar application, especially in combined treatments of the above-mentioned microelements, had a positive effect on all studied traits compared with control. The highest values of plant height (49.55 cm) and biological yield (5085.7 kg/ha) were gained with foliar application of iron + zinc + manganese. The untreated control produced the lowest plant height, number of lateral branch per plant, number of flowering branches per plant and biological yield. The foliar application significantly increased the number of flowering branches per plant and biological yield compared with control. The highest total chlorophyll (1.85 mg g^-1 FW) was gained by foliar application of Fe. In addition, foliar application with the combination of microelements produced the greatest total flavonoids content in plants. Results showed that simultaneous foliar application of Fe, Zn and Mn had a positive effect on the quantitative and qualitative traits of hyssop. Therefore, micronutrients could be applied as a suitable strategy to reduce chemical inputs toward sustainable agriculture and to achieve optimum biological yield in hyssop. To investigate the effect of iron, zinc, and manganese on morphological and phytochemical traits of hyssop, an experiment was conducted as a randomized complete block design with three replications in 2016. Treatments consisted of control, foliar application of iron, zinc, manganese, iron + zinc, iron + manganese, zinc + manganese and iron + zinc + manganese. The foliar application had a significant effect on all studied traits. Foliar application, especially in combined treatments of the above-mentioned microelements, had a positive effect on all studied traits compared with control. The highest values of plant height (49.55 cm) and biological yield (5085.7 kg/ha) were gained with foliar application of iron + zinc + manganese. The untreated control produced the lowest plant height, number of lateral branch per plant, number of flowering branches per plant and biological yield. The foliar application significantly increased the number of flowering branches per plant and biological yield compared with control. The highest total chlorophyll (1.85 mg g^-1 FW) was gained by foliar application of Fe. In addition, foliar application with the combination of microelements produced the greatest total flavonoids content in plants. Results showed that simultaneous foliar application of Fe, Zn and Mn had a positive effect on the quantitative and qualitative traits of hyssop. Therefore, micronutrients could be applied as a suitable strategy to reduce chemical inputs toward sustainable agriculture and to achieve optimum biological yield in hyssop. https://ijfcs.ut.ac.ir/article_75067_e174b1e89f8df57974ae1421989f4227.pdf