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http://elar.urfu.ru/handle/10995/121257
Название: | Comparative study of soil test methods for determination of plant available potassium in Bulgarian arable soils |
Авторы: | Angelova, L. Genova, N. Stoyanova, S. Surleva, O. Nekov, I.-H. Ilieva, D. Surleva, A. |
Дата публикации: | 2021 |
Издатель: | Уральский федеральный университет |
Библиографическое описание: | Comparative study of soil test methods for determination of plant available potassium in Bulgarian arable soils / L. Angelova, N. Genova, S. Stoyanova, O. Surleva, I.-H. Nekov, D. Ilieva, A. Surleva // Аналитика и контроль. — 2021. — Том 25. — № 3. — С. 182-192. — DOI: 10.15826/analitika.2021.25.3.001 |
Аннотация: | This comparative study was aimed at estimating analytical behavior of methods for determination of plant available potassium applied to Bulgarian arable soils and to reveal the relationship between the amount of extractable K. Twenty-four samples from two traditional agricultural regions in Bulgaria were studied. Soil potassium was extracted by NH4OAc/HOAc pH 4.5 (AA), diluted double acid (Mehlich 1), CaCl2, BaCl2 and a modified acetate/lactate method (ALM) and determined by Flame AES. The factors influencing the methods accuracy were identified and uncertainty was estimated. The expanded uncertainty was (in mg K2O (100 g dry soil)-1): 0.10 (ALM), 0.64 (Mehlich 1), 0.17 (CaCl2) and 1.1 (AA). The study revealed that the factor which mainly influence the uncertainty of the applied analytical methods for plant available potassium in soil was the calibration of Flame AES determination. The obtained results showed that extractable potassium lowered in the following order K ALM ≥ K AA > K M ehlich 1> K BaCl2> K CaCl2 . Soil potassium extracted by ALM procedure correlated with AA, BaCl2-K, CaCl2 -K and Mehlich 1 - K at 0.05 level of significance. ALM extracted between 1.2 to 5.8 times more soil K than other methods did. The obtained results provided a base for further study on correlation between extractable K and soil fertility indices for particular soil types and climatic regions in Bulgaria. |
Ключевые слова: | AVAILABLE POTASSIUM EXTRACTION METHODS FLAME AES UNCERTAINTY ARABLE SOILS |
URI: | http://elar.urfu.ru/handle/10995/121257 |
Идентификатор РИНЦ: | 46631060 |
Идентификатор SCOPUS: | 85117892268 |
ISSN: | 2073-1450 2073-1442 |
DOI: | 10.15826/analitika.2021.25.3.001 |
Сведения о поддержке: | The authors of this study were thankful to prof. Margarita Nikolova for the idea and discussions; to Mr. Vencislav Nekov (Sembodja, Ltd., Sofia, Bulgaria) for providing soil samples. Lyudmila Angelova acknowledged the financial support of the National Program for Support of Young Researchers 2018–2020 funded by the Bulgarian Ministry of Education and Science. The authors are thankful to Ms. Yulia Ivanova for making some of the laboratory experiments. |
Источники: | Аналитика и контроль. 2021. Том 25. № 3 |
Располагается в коллекциях: | Аналитика и контроль |
Файлы этого ресурса:
Файл | Описание | Размер | Формат | |
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aik_2021_25_3_003.pdf | 682 kB | Adobe PDF | Просмотреть/Открыть |
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