An Asian Journal of Soil Science

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Effect of Topological Settings on the Soil Acidity Indices and Fertility of East Jaintia Hills, Meghalaya


Affiliations
1 School of Natural Resource Management, College of Post Graduate Studies, Central Agricultural University, Umiam (Meghalaya), India
2 Central Agricultural University, Lamphelpat, Imphal West, Imphal (Manipur), India
     

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The topological settings of the 10 locations of adjacent paddy field near coal mine belt of East Jaintia Hills significantly influenced in causing extreme soil acidity and affect the bio-availability of soil nutrients. It was found that two categories of acidities such as extreme acidity (mean pH 3.16) and moderately acidity (mean pH 4.22) were generated. Results indicate decreased of acidity along the topological settings from top to toe with affirmative relationship with Ex. acidity (0.37 to 1.19 meq/100g), Ex. aluminium (2.86 to 4.35 meq/100g), change in lime requirement (13.75 to 28.67 t/ha) and slight changes in effective CEC (ECEC). Soil contain high organic carbon (SOC, 2.08-2.43%), available nitrogen (N, 293.35 to 319.71 kg/ha), sulphur (S,21.01 to 30.98 kg/ha) and iron (Fe, 222.17 to 241.78 ppm), but low available phosphorus (P2O5, 14.36 to 19.31 kg/ha), DTPA extractable zinc (Zn, 0.27 to 0.44 ppm) and microbial activities. Observations reveals that soils in low laying topographical settings of the paddy field were found maximum in almost all the parameters in comparison with other topographical settings of the study area.

Keywords

Coal Mine Paddy Soil, Topological Settings, Soil Acidity Indices,available Nutrients.
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  • Effect of Topological Settings on the Soil Acidity Indices and Fertility of East Jaintia Hills, Meghalaya

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Authors

Markynti S. Lyngdoh
School of Natural Resource Management, College of Post Graduate Studies, Central Agricultural University, Umiam (Meghalaya), India
Naorem Janaki Singh
School of Natural Resource Management, College of Post Graduate Studies, Central Agricultural University, Umiam (Meghalaya), India
D. Thakuria
School of Natural Resource Management, College of Post Graduate Studies, Central Agricultural University, Umiam (Meghalaya), India
Vishram Ram
School of Natural Resource Management, College of Post Graduate Studies, Central Agricultural University, Umiam (Meghalaya), India
Lala I. P. Ray
School of Natural Resource Management, College of Post Graduate Studies, Central Agricultural University, Umiam (Meghalaya), India
K. Mamocha Singh
Central Agricultural University, Lamphelpat, Imphal West, Imphal (Manipur), India

Abstract


The topological settings of the 10 locations of adjacent paddy field near coal mine belt of East Jaintia Hills significantly influenced in causing extreme soil acidity and affect the bio-availability of soil nutrients. It was found that two categories of acidities such as extreme acidity (mean pH 3.16) and moderately acidity (mean pH 4.22) were generated. Results indicate decreased of acidity along the topological settings from top to toe with affirmative relationship with Ex. acidity (0.37 to 1.19 meq/100g), Ex. aluminium (2.86 to 4.35 meq/100g), change in lime requirement (13.75 to 28.67 t/ha) and slight changes in effective CEC (ECEC). Soil contain high organic carbon (SOC, 2.08-2.43%), available nitrogen (N, 293.35 to 319.71 kg/ha), sulphur (S,21.01 to 30.98 kg/ha) and iron (Fe, 222.17 to 241.78 ppm), but low available phosphorus (P2O5, 14.36 to 19.31 kg/ha), DTPA extractable zinc (Zn, 0.27 to 0.44 ppm) and microbial activities. Observations reveals that soils in low laying topographical settings of the paddy field were found maximum in almost all the parameters in comparison with other topographical settings of the study area.

Keywords


Coal Mine Paddy Soil, Topological Settings, Soil Acidity Indices,available Nutrients.

References