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Estimation of Potassium by Mehlich-3 Extractant Under Integrated Nutrient Management

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Abstract

Potassium (K) is playing a vital role in sustainable crop yield potential function. Determination of available K in soil directly affects the crop yield potential. In this study, different K determination methods were used for exact estimation of K to compute interrelationship of K with crop yield under 12 modules of integrated nutrient management (INM) practices. Available K was estimated by different K determining methods. Among all, Mehlich-3 extractant determines more accurate K availability in the soil except H2SO4 extractant. Among different INM modules treatment M11 showed significantly (p < 0.05) higher availability of K (241.8 µg g−1) over control (180.1 µg g−1), whereas other INM modules comprised with M8 to M10 also showed K availability more than 200 µg g−1 by Mehlich-3 extractant. The study shows that Mehlich-3 extractant better performed under INM modules applied in soil for sustainable management of maize–chickpea cropping system.

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Acknowledgements

Authors are thankful to the technical and support staff of the Division of Soil Chemistry and Fertility, ICAR-Indian Institute of Soil Science, Bhopal, India. Authors are equally thankful to the scientific and technical staff of Department of Soil Science & Agricultural Chemistry, Swami Keshwanand Rajasthan Agricultural University, Bikaner, India.

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Authors and Affiliations

  1. Department of Soil Science & Agricultural Chemistry, Swami Keshwanand Rajasthan Agricultural University, Bikaner, 334006, India

    C. K. Dotaniya, Y. Sharma & R. C. Sanwal

  2. Divison of Soil Chemistry & Fertility, ICAR- Indian Institute of Soil Science, Nabibagh, Bhopal, 462038, India

    B. L. Lakaria, B. P. Meena, A. O. Shirale & A. K. Biswas

  3. ICAR- Directorate of Rapeseed-Mustard Research, Sewar, Bharatpur, 321303, India

    M. L. Dotaniya

  4. Department of Agronomy, SKN College of Agriculture, Jobner, Jaipur, 303329, India

    R. K. Doutaniya

  5. Department of Agronomy, Swami Keshwanand Rajasthan Agricultural University, Bikaner, 334006, India

    M. L. Reager

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  1. C. K. Dotaniya
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  2. B. L. Lakaria
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  3. Y. Sharma
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  4. B. P. Meena
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  6. M. L. Dotaniya
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  7. A. K. Biswas
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  8. R. K. Doutaniya
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  9. R. C. Sanwal
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  10. M. L. Reager
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Correspondence to B. L. Lakaria or M. L. Dotaniya.

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Dotaniya, C.K., Lakaria, B.L., Sharma, Y. et al. Estimation of Potassium by Mehlich-3 Extractant Under Integrated Nutrient Management. Natl. Acad. Sci. Lett. 46, 387–390 (2023). https://doi.org/10.1007/s40009-023-01282-3

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  • DOI: https://doi.org/10.1007/s40009-023-01282-3

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