Vali-e-Asr University of Rafsanjan
Abstract: (105 Views)
Abstract: One of the most important factors limiting the growth and yield of plants is the zinc deficiency. Considering the importance of recycling rubber tires and the possibility of using them in agriculture, the present study aims to investigate the effect of the use of organic ligands on the availability of Zn in rubber ash- treated soils. The present research was carried out in factorial form in a completely randomized design with three replications under greenhouse conditions. The treatments included four levels of rubber ash (0, 0.25, 0.5 and 1% w/w) and three levels of organic ligands (control, citric acid and EDTA with a concentration of 1.5 mmol kg-1 soil). The results showed that the application of organic ligands in soils treated with rubber ash could not affect the vegetative parameters of corn plants, while the concentration of Zn in the aerial organs and plant roots increased with the application of organic ligands in pots treated with rubber ash. So that, the highest concentration of Zn was observed at the level of 1% w/w rubber ash and with the use of EDTA ligand. Also, the concentration of Zn extractable by DTPA in the soil increased significantly with the use of rubber ash treatment. Also, the results showed that due to the small concentrations of lead and cadmium in rubber, the concentration of Cd in aerial organs and plant roots in all treatments was lower than the detection limit of the atomic absorption device, and on the other hand, the treatment of rubber ash, ligand and their interactive effects did not affect the concentration of Pb in plants. The results of this research showed that the tire rubber particles could provide zinc required by the plant in a short period of time and it is recommended as a suitable zinc fertilizer.
Type of Study: Research |
Subject:
Availability of soil water and nutrients for plant
Received: 2023/11/28 | Accepted: 2024/03/11
Received: 2023/11/28 | Accepted: 2024/03/11
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