Seed pelleting is a technique of covering seeds with adhesive agents to improve seed performance and plant establishment while reducing production costs. To evaluate the responses of potato superelite minitubers to different pelleting treatments both qualitatively and quantitatively, a 2-year experiment was conducted based on randomized complete block design with three replications in Mohaghegh Ardabili University, Ardabil, Iran during 2018 and 2019. Experimental treatments included 17 different combinations of zeolite (ZE) or cocopeat (CO) fillers, coating (SC) or soil application (SS) of triple superphosphate, superabsorbent polymer (SP), and chitosan (CH). The results showed a significant effect of pelleting on yield, physiological, and qualitative traits. The highest fresh and dry tuber weight belonged to SS + ZE treatment, which showed 50.6 and 49.0% increase compared to the control treatment (without pelleting), respectively. Pelleting minitubers by ZE + SS had the highest fresh tuber and biological yield (23.6 and 28.0 ton.ha-1, respectively), which showed an increase of 156.5% and 145.6%, compared to the no pelleting treatment. Most pelleting treatments increased the leaf proline content and activity of the antioxidant enzymes. The highest peroxidase activity and lowest catalase activity (16.1 and 29.6 U.mg protein-1.min, respectively) were observed in the CO+SC+CHtreatment. Co-application of ZE, SC, and SP resulted in the highestprotein, nitrate, and starch content. In addition, minituber pelleting withZE+SS+SP increased methionine content significantly by 52.94%compared to the control. In general, the co-application of triplesuperphosphate, SP, and ZE increased the tuber yield and quality traits.Finally, the use of CH with these compounds resulted in improvingphysiological characteristics.
Primary Language | English |
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Journal Section | Makaleler |
Authors | |
Publication Date | October 17, 2022 |
Submission Date | July 27, 2021 |
Acceptance Date | October 19, 2021 |
Published in Issue | Year 2022 Volume: 28 Issue: 4 |
Journal of Agricultural Sciences is published open access journal. All articles are published under the terms of the Creative Commons Attribution License (CC BY).