An Asian Journal of Soil Science

J. V. Polara ¹, R. B. Chauhan ¹

Affiliations
1 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN

Abstract

Thirty representative surface (0-15 cm) soil samples were collected from cultivated farmer's field of each taluka of Gir Somnath district viz., Talala, Veraval, Sutrapada, Kodinar, Gir Gadhada and Una during 2014. The chemical analysis of 180 surface samples indicates that soil were deficient with respect to available N and P₂O₅, whereas medium in available S and high in available K₂O status. Among the DTPA extractable micronutrients, Mn and Cu were found sufficient, whereas the soils were medium in Fe and Zn. The nutrient index values were low for available N (1.20) and P₂O₅ (1.27), medium for available S (1.74), Fe (2.24) and Zn (2.17) and high for available K₂O (2.64), Mn (2.79) and Cu (3.00) in the soils of Gir Somnath district.

Keywords

Available Macronutrients, Dtpa Extractable Micronutrients, Nutrient Index.

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R. B. Chauhan ¹, J. V. Polara ¹

Affiliations
1 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN

Abstract

Thirty surface (0-15 cm) soil samples were collected from each talukas of Gir Somnath district viz., Talala, Veraval, Sutrapada, Kodinar, Gir Gadhada and Una. The physical characteristics properties of the soils were determined by using standard methods. The soils of Gir Somnath have overall values of bulk density, particle density, total porosity, MWHC and expansion varied from 1.24 to 1.45, 2.07 to 2.67 Mg m^-3, 36.96 to 53.39, 31.06 to 56.89 and 5.54 to 35.52 per cent with mean value of 1.34, 2.49 Mg m^-3, 46.00, 41.91 and 21.97 per cent, respectively.

Keywords

Physical Properties of Soils, Bulk Density, Particle Density, Porosity, MWHC.

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J. V. Polara ¹, R. B. Chauhan ¹

Affiliations
1 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN

Abstract

In order to study, the fluctuation of well/tube well water table, 30 sites each from 6 talukas of Gir Somnath district from where water table depths were measured before and after monsoon. In all, 152 wells and 28 tube wells water table levels were studied in May, 2014 and again after 6^th month in November, 2014. The water table before monsoon (May, 2014) in wells and tube wells ranged from 4.58 to 42.81 and 15.29 to 122.32 with mean value of 17.21 and 59.96 m, respectively. Surprisingly, water of some of the wells of all the talukas and tube well of Talala taluka rises gradually and were flowing freely on soil surface during the monsoon. At the end of the monsoon (November, 2014), the overall water table of Gir Somnath district in well ranged from 1.52 to 24.46 and in tube well from 3.05 to 76.45 m with mean value of 8.01 and 16.71 m, respectively. The minimum fluctuation of water table (8.46 m) in well was observed in Kodinar taluka, whereas in tube well it was in Sutrapada (38.48 m) taluka. The maximum fluctuation of water table in well was observed in Una (9.85 m) taluka and in tube well in Gir Gadhada (61.16 m) taluka.

Keywords

Water Table Fluctuation,Well/Tube Well.

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J. N. Naria ¹, J. V. Polara ², A. V. Rajani ², B. A. Golakiya ²

Affiliations
1 Krishi Vigyan Kendra, Junagadhh Agricultural University, Jamnagar (Gujarat), IN
2 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN

Abstract

Surfaces soil samples (0-15 cm) were collected to study the dynamics of Mn fractions in the selective treatments of the LTFE’s conducted on groundnut-wheat-fodder sorghum at Instructional Farm, Junagadh Agricultural U1,iversity, Junagadh, during the year 1979-80 (1st year), 1989-90 (10th year) and 1999-2000 (20th year) after completion of crop cycle. The selected treatments were T₁-Control, T₂-FYM @ 25t/ha at an interval of 3 years, T₃-1/2 RD of NP, T₄-1/2 RD of NP + K, T₅-RD of NP and T₆-RD of NP+K to respective crops. The water soluble Mn was found very trace. Exchangeable form of Mn differs significantly only at 1st year and after 20lh year only. Remarkable decreased in exchangeable form of Mn was noticed in treatments without application of chemical fertilizers after 20th year. The control and FYM application recorded the highest values of DTPA-Mn at 1st and 20th year, and it was recorded highest (7.241 ppm) at 10th year in treatment T₆. Overall increase in reducible form of Mn was found, but it was non significant when pooled over year. Overall mean registered an increase in total Mn content on the long run basis. After 20th year residual Mn decline in T₁ whereas in other treatments. it was declined at 10lh and increased at 20th year. Per cent available of Mn increased up to 10lh year and then it was decreased. There was overall increase in total available form of Mn after a long run.

Keywords

Mn Fraction, Water Soluble-Mn, Exchangeable-Mn, DTPA-Mn, Total Available-Mn, LTFE’S Soil.

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J. V. Polara ¹, J. N. Naria ², A. V. Rajani ¹, B. A. Golakiya ¹

Affiliations
1 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN
2 Krishi Vigyan Kendra, Junagadhh Agricultural University, Jamnagar (Gujarat), IN

Abstract

The dynamics of Fe fractions in the selective treatments were studied by collecting the surface soil samples (0-15 cm) from the LTFE’s conducted on groundnut-wheat-fodder sorghum at instructional farm, Junagadh Agril. University, Junagadh during the year 1979-80 (1st year), 1989-90 (10th year) and 1999-2000 (20th year) after completion of crop cycle. The selected treatments were T₁-Control, T₂-FYM @ 25 t/ha at an interval of 3 years, T₃-½ RD of NP, T₄-1/2 RD of NP+K, T₅-RD of NP and T₆-RD of NP+K to respective crops. On a long run, after 20th year the values of water soluble-Fe were recorded highest in T₂ (0.722 ppm) and T₁ (0.504 ppm) and the lowest in T₅ (0.082 ppm) and T₃ (0.130 ppm). The significantly highest exchangeable-Fe was recorded in T₅ (2.084 ppm), at 10th year. The DTPA available and reducible Fe was found significantly higher under T₁ and T₂, while application of fertilizer registered mostly a decline in long term at 20th year. The total and residual-Fe content did not showed any significant differences either through treatment or through years. The percentage availability and available total-Fe were not affected significantly in pooled years, but Y x T interaction was found significant and in the initial years T₅ and T₆, while in the 20th years T₁ and T₂ recorded the highest values.

Keywords

LTFE’s Soil, Fe Fraction, Water Soluble-Fe, Exchangeable-Fe, DTPA Available-Fe, Total-Fe, Per cent Available-Fe.

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P. J. Marsonia ¹, J. V. Polara ², S. T. Hadiyal ²

Affiliations
1 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN
2 Micronutrient Project (ICAR), Anand Agricultural University, Anand (Gujarat), IN

Abstract

Seventy three surface (0-15 cm) soil samples from the three talukas viz., kutiyana, Ranavav and Porbandar of Porbandar district were collected from the cultivated fields and were analyzed for different chemical poperties. The results revealed that Na⁺ and Cl^- were dominant among the water soluble ions, whereas, Ca⁺⁺ and Mg⁺⁺ were dominant among the exchangeable cations. Nearly half (48.0%) of the cultivated coastal soils of Porbandar district were found normal in nature, followed by sodic (20.5%), saline (16.4%) and saline-sodic (15.1%).

Keywords

Characterization of Soils, Water Soluble Ions, Exchangeable Ions, Saline, Sodic, Saline-Sodic.

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S. T. Hadiyal ¹, P. J. Marsonia ¹, D. V. Patel ¹, J. V. Polara ¹

Affiliations
1 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN

Abstract

Seventy three surface (0-15 cm) soil samples were collected from the cultivated soils of Porbandar district, and were analyzed for EC and pH from saturation extract and 1:2.5 soil water ratios. The results revealed highly significant correlations between ECe and EC_2.5 and between pHs and pH_2.5. High correlation coefficient (r) and regression coefficient (b), high percentage of variance (R²) in case of EC_2.5 and pH_2.5 were observed and hence, prediction of ECe from EC_2.5 and pHs from pH_2.5 with greater precision was possible by using the regression equation for the soils of Porbandar district.

Keywords

Salinity Appraisal, Saturation Extract, ECe and pH, Coastal Soils.

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A. V. Rajani ¹, J. N. Naria ², J. V. Polara ¹, B. A. Golakiya ¹

Affiliations
1 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN
2 Krishi Vigyan Kendra, Junagadhh Agricultural University, Jamnagar (Gujarat), IN

Abstract

The dynamics of Cu fractions in the selective treatments were studied by collecting the surface soil samples (0-15 cm) from the L TFE’s conducted on groundnut-wheat-fodder sorghum at Instructional Farm, Junagadh Agril.University, Junagadh during the year 1979-80 (15t year), 1989-90 (10th year) and 1999-2000 (20th year) after completion of crop cycle. The selected treatments were T₁-Control, T₂-FYM @ 25 t/ha at an interval of 3 years, T₃-½ RD of NP, T₄-1/2 RD of NP+K, T_5-RD of NP and T₆-RD of NP+K to respective crops. The water soluble-Cu varied significantly in pooled results and the highest values were recorded in T₅ (0.119 ppm) followed by T₄ (0.115 ppm). Exchangeable form of Cu did not differ significantly during individual years and in pooled results. The RD of fertilizers + potassium (T₆) recorded the highest value of DTP A-Cu at initial and 10th year and triggering utilization in long run rendering lower value at 20th year. Reducible-Cu was not affected significantly in pooled results, but untreated control (T₁) recorded the highest value (0.269 ppm) at 20th year. Total and residual form of Cu content remain unaffected by different treatments during individual years and in pooled results, however, there was distinct numerical reduction in total and residual form of Cu over the year. Application of fertilizers enhanced utilization of available total-Cu, while conversion of total to available form and under utilization in T₁ (1.907 ppm) and T₂ (1.947 ppm) resulted in higher values after 20th year. The per cent availability of Cu content increased from initial to 20th year crop cycles in untreated control (T₁) and FYM (T₂) treatments.

Keywords

LTFE’s Soil, Cu Fraction, Water Soluble-Cu, Exchangeable-Cu, DTPA Available-Cu, Total-Cu, Per cent Available-Cu.

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J. N. Naria ¹, B. A. Golakiya ², J. V. Polara ², A. V. Rajani ²

Affiliations
1 Krishi Vigyan Kendra, Junagadhh Agricultural University, Jamnagar (Gujarat), IN
2 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN

Abstract

Surfaces soil samples (0-15 cm) were collected to study the dynamics of Zn fractions in the selective treatments of the LTFE’s codducted on groundnut-wheat-fodder sorghum at Instructional Farm, Junagadh Agricultural University, Junagadh during the year 1979-80 (15t year), 1989-90 (10th year) and 1999-2000 (20th year) after completion of crop cycle. The selected treatments were T₁-Control, T₁-FYM @ 25t/ha at an interval of 3 years, T₃-1/2 RD of NP, T₄-1/2 RD of NP + K, T₅-RD of NP and T₆-RD of NP+K to respective crops. The water soluble Zn was present in negligible quantity. Exchangeable forms of Zn differed significantly only at 20th year and also in pooled over years. Potassium enhanced the utilization of exchangeable form of Zn. The RD of fertilizers recorded the highest value of DTP A-Zn at initial and 10th year and triggering utilization in long run thereby rendering differences non significant at 20th year. Total Zn content did not differ significantly, while residual form of Zn was found significantly highest in T₃ (38.171 ppm). The total available-Zn and Zn-per cent availability were not influenced significantly by different treatments in pooled results, but Y x T interactions were found significant and the highest values were recorded in T₁-(3.648 ppm) and T₂ (3.559 ppm), respectively after 20th year crop cycle.

Keywords

LTFEE’S Soil, Zn Fractions, Water Soluble-Zn, Exchangeable-Zn, DTPA-Zn, Total Available-Zn, Per cent Available-Zn.

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B. M. Hadiya ¹, J. V. Polara ¹

Affiliations
1 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN

Abstract

Thirty surface (0-15 cm) soil samples were collected from each talukas of Dev Bhumi Dwarka district viz., Kalyanpur, Dwarka, Khambhalia and Bhanvad. The physical characteristics of the soils were determined by using standard methods. The soils of Dev Bhumi Dwarka have overall values of bulk density, particle density, total porosity, MWHC and expansion varied from 1.21 to 1.57, 2.20 to 2.79 Mg m^-3, 34.82 to 53.51, 32.03 to 55.34 and 6.52 to 22.65 per cent with mean value of 1.36, 2.44 Mg m^-3, 44.09, 43.76 and 13.53 per cent, respectively.

Keywords

Physical Properties of Soils, Bulk Density, Particle Density, Porosity, MWHC.

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J. V. Polara ¹, B. M. Hadiya ¹

Affiliations
1 Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh (Gujarat), IN

Abstract

To study the fluctuation in quality of irrigation water, thirty representative underground well/tube well water samples were collected from each taluka of Dev Bhumi Dwarka district viz., Kalyanpur, Dwarka, Khambhalia and Bhanvad during before monsoon (May, 2015) and at the same site during after monsoon (November, 2015). The mean EC (dS m^-1), pH, SAR, RSC and SSP values were 2.00, 7.67, 5.34, 0.45 and 52.01 before monsoon and changed to 1.79, 7.88, 4.23, 0.26 and 43.16 after monsoon with per cent improvement of 10.50, -2.74, 20.79, 42.22 and 17.02, respectively. The quality indices of irrigation water like EC, SAR, RSC and SSP of the irrigation decreased and improved, while that of pH value increased after monsoon as compared to that observed before monsoon.

Keywords

Fluctuation in Quality of Irrigation Water, Wells/Tube Wells Water Quality.

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