Document Type : Research paper
Authors
1 Shahid Chamran University of Ahvaz
2 Department of Technology and Production Management, Ornamental Plants research Center (OPRC), HSRI, AREEO, Mahallat, Iran
3 Department of Horticultural Sciences and Landscaping Engineering, Agriculture College, Ferdowsi University of Mashhad
Abstract
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 0, 15, 30, and 45 kg ha-1 along with Mn concentrations of 0, 10, and 20 kg ha-1 from FeSO4 and MnSO4 sources, respectively. According to the results, high Fe concentrations (30 and 45 kg ha-1) 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 (30 kg ha-1) and Mn (20 kg ha-1) significantly increased spike length (27.19%), floret length (46.22%), bulb count (43.60%), vase life (96.08%), and the percentage of opened florets (26.65%). In the second year, Fe (30 kg ha-1) and Mn (20 kg ha-1) resulted in even more improvements, including flower stalk (78.48%), floret length (47.44%), vase life (32.02%), the percentage of opened florets (41.31%), fresh (41.73%) and dry (54.40%) weights of the aerial parts, and bulb fresh (48.98%) and dry (61.54%) weights. The findings highlighted the positive effects of FeSO4 and MnSO4 on tuberose growth when used together at 30 and 20 kg ha-1, 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.
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