Combinations of Iron and Manganese Have Variable Effects on the Quantitative and Qualitative Traits of Tuberose (Polianthes tuberosa L.)

Understanding the interaction and balance between iron (Fe) and manganese (Mn) as fertilizers is crucial for optimizing tuberose growth. A field experiment investigated the effects of various Fe and Mn concentrations on quantitative features, qualitative traits, and microelement absorption and distribution in tuberose plants. The treatments included Fe concentrations of ۰, ۱۵, ۳۰, and ۴۵ kg ha-۱ along with Mn concentrations of ۰, ۱۰, and ۲۰ kg ha-۱ from FeSO۴ and MnSO۴ sources, respectively. According to the results, high Fe concentrations (۳۰ and ۴۵ kg ha-۱) negatively affected the uptake of Mn, Zn, and Cu in aerial parts and bulbs. However, an apt combination of Mn and Fe significantly improved several traits. In the first year, Fe (۳۰ kg ha-۱) and Mn (۲۰ kg ha-۱) significantly increased spike length (۲۷.۱۹%), floret length (۴۶.۲۲%), bulb count (۴۳.۶۰%), vase life (۹۶.۰۸%), and the percentage of opened florets (۲۶.۶۵%). In the second year, Fe (۳۰ kg ha-۱) and Mn (۲۰ kg ha-۱) resulted in even more improvements, including flower stalk (۷۸.۴۸%), floret length (۴۷.۴۴%), vase life (۳۲.۰۲%), the percentage of opened florets (۴۱.۳۱%), fresh (۴۱.۷۳%) and dry (۵۴.۴۰%) weights of the aerial parts, and bulb fresh (۴۸.۹۸%) and dry (۶۱.۵۴%) weights. The findings highlighted the positive effects of FeSO۴ and MnSO۴ on tuberose growth when used together at ۳۰ and ۲۰ kg ha-۱, respectively. Tuberose development improved significantly in response to this combination treatment over the two years, which provides valuable insights for farmers and researchers in aiming to enhance tuberose yield.

کلیدواژه ها:

Bulb Mn ، Floret diameter ، Microelements ، Fe of aerial part ، Tuberose ، vase life