Unravelling the Release Kinetics of Exchangeable Magnesium in Acid Soil of Nilgiris

Munmun Dash, Subramanium Thiyageshwari, Duraisamy Selvi, Rangasamy Anandham, Karuppusamy Rajan, Djanaguiraman Maduraimuthu, Santosh Kumar Singh (), Jagadesh Muthumani, Shivvendra Singh and Biswajit Pramanick ()
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Munmun Dash: Department of Soil Science, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India
Subramanium Thiyageshwari: Department of Soil Science, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India
Duraisamy Selvi: Department of Soil Science, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India
Rangasamy Anandham: Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India
Karuppusamy Rajan: Division of Soil Science, ICAR-Indian Institute of Soil and Water Conservation Research Centre, Datia 475661, Madhya Pradesh, India
Djanaguiraman Maduraimuthu: Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India
Santosh Kumar Singh: Department of Soil Science, Dr. Rajendra Prasad Central Agricultural University, Pusa 848125, Bihar, India
Jagadesh Muthumani: Department of Soil Science, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India
Shivvendra Singh: Department of Agronomy, Graphic Era Hill University, Dehradun 248171, Uttarakhand, India
Biswajit Pramanick: Department of Agronomy, Dr. Rajendra Prasad Central Agricultural University, Pusa 848125, Bihar, India

Sustainability, 2023, vol. 15, issue 12, 1-13

Abstract: Magnesium deficiency is a pervasive and recurrent factor that significantly restricts crop production, primarily attributable to the low levels of exchangeable magnesium (ex-Mg) present in acidic soil conditions. This deficiency exerts a pronounced negative influence on the sustainability and progress of agricultural development. Hence the current study aspired at modeling the kinetics of Exchangeable Magnesium release from 3 fertilizer sources i.e., Epsom salt (MgSO 4 ·7H 2 O), Magnesite (MgCO 3 ) and Dolomite [CaMg(CO 3 ) 2 ] in the acidic soil of the Nilgiris district in Tamil Nadu, India. Four mathematical models were verified—Power function, parabolic diffusion, Simple-Elovich, and first-order to explain cumulative Mg 2+ release. Power function was noticed to be an outstanding empirical equation finely fitted to the experimental data. The intensity, as well as the modality of the release pattern, was predicted by the numerical parameters. The power function as well as Parabolic Diffusion portrayed the Mg 2+ release kinetics best as verified by the maximum correlation coefficients ( r 2 ). The parabolic diffusion model also designated the data as suitable, signifying diffusion-controlled exchange. From the derived dissolution rates, it was conceivable to agree Epsom salt (MgSO 4 ·7H 2 O) from which the release was faster than the other two magnesium sources. In conclusion, these outcomes provided an insight into the temporal dynamics of magnesium availability in acidic soil, highlighting the importance of understanding its release kinetics for sustainable agriculture development. The findings contribute to the broader knowledge of magnesium management strategies, aiding in the development of targeted interventions to alleviate magnesium deficiency and optimize crop productivity in acidic soil environments.

Keywords: magnesium; acidic soil; Mg 2+ release; kinetic models; power function (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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