Spectral reflectance properties of vertisols and associated soils of Nagpur district in Maharashtra

Solanke, Preeti C.; Srivastava, Rajeev; Prasad, Jagdish; Nagaraju, M.S.S.; Patil, N. G.; Nasre, R.A.; Naitam, R. K.; Wakode, Roshan

doi:10.5958/0974-0228.2021.00016.5

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…The moisture retention at all the tensions was function of mechanical components of the soil which is manifested by highly positive and significant correlation between silt and clay and negative correlation of silt and clay with sand (Table 4). When suction pressure is increased from 0.03 to 1.5 MPa, macropores get emptied at once at lower suction range whereas micropores retain the water even at high suction pressure and predominantly the effect of clay can be seen due to greater number of micropores (Nikam et al 2006, Dinesh et al 2017a. Available water varied from 1.01-16.38% across the pedons and highest value was observed in Pedon 8.…”

Section: Resultsmentioning

confidence: 99%

Morphology, Genetic Relationships and Classification of Soils of Selected Micro-Watersheds in North-west India

2023

IJE

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Nine pedons representing the typical landforms of micro-watersheds in Chhachhrauli block of Yamunanagar, Haryana were exposed to determine the interrelationships and variability of soil characteristics. The colour of pedons was yellowish brown with dominant hue of 10YR. Soil structure was weak to strong, fine to medium, sub angular blocky across the pedons. The consistency of different pedons varied from non-sticky non-plastic to sticky plastic and soil texture varied from sand to loam with predominance of sand than clay in all the pedons. Bulk density, particle density and available water content across all the pedons varied from 1.01 to 1.75 Mg m , 2.50 to 2.65 Mg m and 1.01 to −3 −3 16.38%, respectively. The pH ranged from 4.20 to 8.30 across all the profiles indicating acidic to alkaline nature of the soils. The soils were low to high in soil organic carbon (SOC). In all soils, SOC varied from 0.06 to 2.54 per cent and was higher in surface horizons than subsurface horizons. The CaCO content in pedons 1, 3, 4, 5 and 6 was <1% suggesting nearly complete decalcification in these soils. The exchangeable 3 complex of the soils was dominated by Ca followed by Mg, Na and K. Broadly the physiography and land use considerably influenced the value of total exchangeable bases. Relatively higher content of nutrients was observed in the surface horizons compared to subsurface horizons. The results demonstrated that, in general, varying SOC concentrations are associated with varying slope positions of the pedons, highlighting the significance of landform location in regulating soil water content as well as the SOC concentration. The geomorphic location of each pedon across the watersheds has influenced strongly the movement of solutes and therefore soil development. The soils of the study area were classified as sandy, mixed, hyperthermic, typic Ustipsamments (Pedon 1), fine loamy Ustochrepts (Pedon 2, 3, 5, 6, 7, 8 and 9) and coarse loamy Ustorthents (Pedon 4).

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Section: Resultsmentioning

confidence: 99%

Morphology, Genetic Relationships and Classification of Soils of Selected Micro-Watersheds in North-west India

2023

IJE

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“…The development of regional-specific soil spectral libraries is, therefore, a priority for soil research worldwide (Brown et al 2006) Several successful VNIR spectral models have been developed to predict soil properties of agronomic importance in India (Dwivedi et al 1981;Singh et al 2014). For example, the soil properties linked to nutrient management in precision farming (Vibhute et al 2018); assessment of soil salinity properties (Srivastava et al 2017); assessment of functional soil properties (Saxena et al 2003;Srivastava et al 2004;Kadupitiya et al 2010;Solanke et al 2021); hydraulic property prediction (Santra et al 2009); soil moisture assessment (Gulfo et al 2012); aggregate size segregation (Sarathjith et al 2014); soil microbiological properties (Mondal et al 2017) have been assessed spectroscopically using different models.…”

Section: Introductionmentioning

confidence: 99%

Spectral assessment of soil properties in semi-arid tropical regions of southern Karnataka Plateau

Lalitha

Dharumarajan

Gomez

et al. 2022

Archives of Agronomy and Soil Science

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The present study assessed the visible and short wave infrared (VNIR-SWIR) laboratory spectroscopy coupled random forest regression (RF) technique for predicting soil properties in the southern Karnataka Plateau, India. The spectral data acquired for about 228 profile samples were used to predict key soil properties. The RF model fits well for the spectral prediction of clay (R 2 = 0.65), sand (R 2 = 0.60), cation exchange capacity (R 2 = 0.74), field capacity (R 2 = 0.65) and permanent wilting point (R 2 = 0.72). Wherein soil organic carbon was poorly predicted with an R 2 of 0.22 and RPD of 1.2 due to its lower content and narrow range (0.8 to 20 g kg −1 ). The spectral assessment by PCA showed that the first (50%) and third (34%) components had high spectral variation and significantly correlated with soil properties such as pH, CEC, clay, FC, and PWP related to wavelengths indicating clay minerals and iron oxides. However, the second component had less spectral variation (13%) that is related to wavelengths indicating various organic components and correlated well with SOC. Thus, the VNIR-SWIR spectroscopy could be a suitable supplementary method for rapidly predicting soil properties related to clay minerals and iron oxides.

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Spectral reflectance properties of vertisols and associated soils of Nagpur district in Maharashtra

Cited by 2 publications

References 12 publications

Morphology, Genetic Relationships and Classification of Soils of Selected Micro-Watersheds in North-west India

Morphology, Genetic Relationships and Classification of Soils of Selected Micro-Watersheds in North-west India

Spectral assessment of soil properties in semi-arid tropical regions of southern Karnataka Plateau

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