Simranpreet K. Sidhu, Ayush Sharma, Navdeep Kaur, Amanpreet Sandhu, Hayden Shellenbarger, Lincoln Zotarelli, Christian Christensen, Simon Riley, Lakesh K. Sharma
{"title":"沙质土壤马铃薯块茎产量和吸收对钾、氮的响应","authors":"Simranpreet K. Sidhu, Ayush Sharma, Navdeep Kaur, Amanpreet Sandhu, Hayden Shellenbarger, Lincoln Zotarelli, Christian Christensen, Simon Riley, Lakesh K. Sharma","doi":"10.1002/agj2.70081","DOIUrl":null,"url":null,"abstract":"<p>Potassium (K) is essential for potato (<i>Solanum tuberosum</i> L.) production, influencing physiological processes, nutrient uptake, and tuber quality. This study evaluated the interactive effects of K and nitrogen (N) on potato yield and quality in Florida's sandy soils to determine optimal K application rates for maximum yield and improved N use efficiency. A 2-year experiment was conducted in a split-plot design with three N rates (168, 224, and 280 kg N ha<sup>−1</sup>) in the main plot and six K rates (0, 112, 224, 336, 448, and 560 kg K<sub>2</sub>O ha<sup>−1</sup>) in subplots in four replications in Hastings, FL. Results revealed a significant effect of seasons on the soil K availability, uptake, tuber yield, and nutrient use efficiency. The soil K levels and uptake increased with higher K application rates across all potato growth stages. Regression analysis identified optimum K rate of 425 and 535 kg K₂O ha<sup>−1</sup> for total and marketable tuber yield, respectively. In the first season, total tuber yield increased by 33% and 38% at K application rates of 336 and 560 kg K₂O ha<sup>−1</sup>, respectively, compared to no K application. Tuber specific gravity was not affected by K rates, while the higher K application rates increased the N use efficiency and decreased benefit-cost ratio. The study concludes that K application rates above 425 kg K₂O ha<sup>−1</sup> maximize potato tuber yield and enhance N efficiency, supporting the revision of K recommendations in sandy soils based on low K status.</p>","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":"117 3","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Response of potato tuber yield and uptake to potassium and nitrogen in sandy soils\",\"authors\":\"Simranpreet K. Sidhu, Ayush Sharma, Navdeep Kaur, Amanpreet Sandhu, Hayden Shellenbarger, Lincoln Zotarelli, Christian Christensen, Simon Riley, Lakesh K. Sharma\",\"doi\":\"10.1002/agj2.70081\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Potassium (K) is essential for potato (<i>Solanum tuberosum</i> L.) production, influencing physiological processes, nutrient uptake, and tuber quality. This study evaluated the interactive effects of K and nitrogen (N) on potato yield and quality in Florida's sandy soils to determine optimal K application rates for maximum yield and improved N use efficiency. A 2-year experiment was conducted in a split-plot design with three N rates (168, 224, and 280 kg N ha<sup>−1</sup>) in the main plot and six K rates (0, 112, 224, 336, 448, and 560 kg K<sub>2</sub>O ha<sup>−1</sup>) in subplots in four replications in Hastings, FL. Results revealed a significant effect of seasons on the soil K availability, uptake, tuber yield, and nutrient use efficiency. The soil K levels and uptake increased with higher K application rates across all potato growth stages. Regression analysis identified optimum K rate of 425 and 535 kg K₂O ha<sup>−1</sup> for total and marketable tuber yield, respectively. In the first season, total tuber yield increased by 33% and 38% at K application rates of 336 and 560 kg K₂O ha<sup>−1</sup>, respectively, compared to no K application. Tuber specific gravity was not affected by K rates, while the higher K application rates increased the N use efficiency and decreased benefit-cost ratio. The study concludes that K application rates above 425 kg K₂O ha<sup>−1</sup> maximize potato tuber yield and enhance N efficiency, supporting the revision of K recommendations in sandy soils based on low K status.</p>\",\"PeriodicalId\":7522,\"journal\":{\"name\":\"Agronomy Journal\",\"volume\":\"117 3\",\"pages\":\"\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2025-05-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Agronomy Journal\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/agj2.70081\",\"RegionNum\":3,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"AGRONOMY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agronomy Journal","FirstCategoryId":"97","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/agj2.70081","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 0
摘要
钾(K)是马铃薯(Solanum tuberosum L.)生产所必需的,影响生理过程、营养吸收和块茎品质。本研究评估了钾和氮(N)对佛罗里达州沙质土壤马铃薯产量和品质的交互作用,以确定获得最大产量和提高氮利用效率的最佳施钾量。在FL黑斯廷斯进行了为期2年的分畦试验,主畦采用3种施氮量(168、224和280 kg N ha−1),次畦采用6种施钾量(0、112、224、336、448和560 kg K2O ha−1),共4个重复。结果表明,季节对土壤钾有效性、吸收、块茎产量和养分利用效率有显著影响。马铃薯各生育期土壤钾含量和吸收量随施钾量的增加而增加。回归分析结果表明,最适施钾量为425和535 kg K₂O ha - 1,可提高块茎总产量和可售块茎产量。第1季,施钾量为336和560 kg K₂O ha - 1时,块茎总产量比不施钾分别提高33%和38%。块茎比重不受施钾量的影响,但施钾量的增加提高了氮素利用效率,降低了效益成本比。研究结果表明,425 kg K₂O ha - 1以上施钾量可使马铃薯块茎产量最大化,提高氮素效率,支持基于低钾状态对沙质土壤钾推荐量的修订。
Response of potato tuber yield and uptake to potassium and nitrogen in sandy soils
Potassium (K) is essential for potato (Solanum tuberosum L.) production, influencing physiological processes, nutrient uptake, and tuber quality. This study evaluated the interactive effects of K and nitrogen (N) on potato yield and quality in Florida's sandy soils to determine optimal K application rates for maximum yield and improved N use efficiency. A 2-year experiment was conducted in a split-plot design with three N rates (168, 224, and 280 kg N ha−1) in the main plot and six K rates (0, 112, 224, 336, 448, and 560 kg K2O ha−1) in subplots in four replications in Hastings, FL. Results revealed a significant effect of seasons on the soil K availability, uptake, tuber yield, and nutrient use efficiency. The soil K levels and uptake increased with higher K application rates across all potato growth stages. Regression analysis identified optimum K rate of 425 and 535 kg K₂O ha−1 for total and marketable tuber yield, respectively. In the first season, total tuber yield increased by 33% and 38% at K application rates of 336 and 560 kg K₂O ha−1, respectively, compared to no K application. Tuber specific gravity was not affected by K rates, while the higher K application rates increased the N use efficiency and decreased benefit-cost ratio. The study concludes that K application rates above 425 kg K₂O ha−1 maximize potato tuber yield and enhance N efficiency, supporting the revision of K recommendations in sandy soils based on low K status.
期刊介绍:
After critical review and approval by the editorial board, AJ publishes articles reporting research findings in soil–plant relationships; crop science; soil science; biometry; crop, soil, pasture, and range management; crop, forage, and pasture production and utilization; turfgrass; agroclimatology; agronomic models; integrated pest management; integrated agricultural systems; and various aspects of entomology, weed science, animal science, plant pathology, and agricultural economics as applied to production agriculture.
Notes are published about apparatus, observations, and experimental techniques. Observations usually are limited to studies and reports of unrepeatable phenomena or other unique circumstances. Review and interpretation papers are also published, subject to standard review. Contributions to the Forum section deal with current agronomic issues and questions in brief, thought-provoking form. Such papers are reviewed by the editor in consultation with the editorial board.