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Assessing the Impact of Sulfur Application on Potato Sulfur Uptake and Yield in Sandy Soils of Florida

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Abstract

Sulfur (S) is an essential nutrient vital for ideal plant growth and optimal crop yield. Potatoes in sandy soils of northeast Florida often face challenges due to low organic matter content and a high water table. The S application guidelines must be developed to avoid the under and over-application of S and to optimize integrated nutrient management plans for potatoes in Florida’s sandy soils. A comprehensive study evaluated the response of S application in potatoes with S uptake, tuber yield, and quality. For 2 years (2021 and 2022), separate field experiments were conducted at three different locations, while location 1 had a trial replicated (Trial 1 and 2). The study was established in a randomized complete block design with four replications, in which five different rates (0, 45, 90, 135, and 180 kg S ha−1, as gypsum [17% S]) were applied at pre-planting. The results of this study show variations in soil-available S concentrations in response to different application rates and sampling times. The dry above-ground biomass production, S uptake, and potato tuber yield remained largely unaffected by S application. However, specific gravity at location 1 reported the response of the S application in interaction with trials. Location-specific effects, compounded by yearly variations, played a significant role, particularly at location 1. External and internal tuber quality showed inconsistent responses to the S application and interactions with trials and year factor. This study reported the significant influence of irrigation water (containing high amounts of SO42−) on the overall experiment. So, these findings underscore the importance of water nutrient concentration in developing crop nutrient recommendations. In conclusion, this study provides valuable insights into the complex relationship between S application, S uptake, and yield in the unique agricultural context of the sandy soils of Florida.

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Data will be available on request from the authors.

Abbreviations

˚C:

Degree Celsius

BC:

Brown centers

Ca:

Calcium

CRS:

Corky ring spot

DAP:

Days after planting

FL:

Florida

ha:

Hectare

HH:

Hollow heart

IHN:

Internal heat necrosis

kg:

Kilograms

M:

Meter

Mg:

Megagrams

mg:

Milligrams

mm:

Millimeter

P:

Phosphorus

S:

Sulfur

SG:

Specific gravity

SO4 2− :

Sulfate

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Acknowledgements

We acknowledge funding from the Florida Department of Agriculture and Consumer Services (FDACS, grant number 27429) under the specialty crop grant. Special thanks to Amanpreet Kaur, Simranpreet Kaur Sandhu, Benjamin Tubb, Navdeep Kaur, Winifred Griffin, Brenden Burns, Holden Muehleisen, and Hayden Shellenbarger’s assistance with experiment setup, in-field soil and biomass sampling, and sample processing. We also thank Simon Riley for helping with statistical analysis and interpretation of the results. Special thanks to Dr. Diego Arruda Huggins de Sá Leitão for helping with improving this manuscript with his valuable review. We want to thank Hastings Agricultural Extension Center, Hastings, Florida, and their crew members for handling the trials and managing fields.

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Correspondence to Lakesh K. Sharma.

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Sharma, A.K., Zotarelli, L., Christensen T, C. et al. Assessing the Impact of Sulfur Application on Potato Sulfur Uptake and Yield in Sandy Soils of Florida. Potato Res. (2024). https://doi.org/10.1007/s11540-024-09727-y

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  • DOI: https://doi.org/10.1007/s11540-024-09727-y

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