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Uptake of radioactive calcium by groundnut (Arachis hypogaea L.) and efficiency of utilisation of applied calcium

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Summary

A pot experiment was conducted with groundnut applying labelled calcium as its sulphate and carbonate at two levels namely 75 and 150 kg Ca per ha with varying levels of P, K and Mg. Plant samples were taken at different stages of crop growth and analysed for the content of radioactive calcium. Calcium sulphate treatment has resulted in larger uptake of calcium compared to calcium carbonate. An application of 150 kg Ca per ha has caused significantly higher uptake by groundnut plant than 75 kg Ca per ha. The percentage of utilisation of added calcium ranged from 2.2 to 5.4. Recovery of calcium by plants was more in calcium sulphate treatment rather than in calcium carbonate. The plants showed preference to absorb applied calcium rather than native calcium.

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Authors and Affiliations

  1. Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore, India

    S. Loganathan & K. K. Krishnamoorthy

Authors
  1. S. Loganathan
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  2. K. K. Krishnamoorthy
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Forms a part of the Ph.D. thesis of the first author approved by Tamil Nadu Agricultural University, Coimbatore.

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Loganathan, S., Krishnamoorthy, K.K. Uptake of radioactive calcium by groundnut (Arachis hypogaea L.) and efficiency of utilisation of applied calcium. Plant Soil 46, 571–577 (1977). https://doi.org/10.1007/BF00015916

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  • DOI: https://doi.org/10.1007/BF00015916

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