International Journal of Agricultural Sciences

Sukha Ram Meena ¹, M. S. Solanki ¹, A. V. Rajani ¹

Affiliations
1 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 conducted on groundnut-wheat sequence at Instructional Farm, Junagadh Agricultural University, Junagadh during the year 1999 (Initial year), 2010-11 (12^th year) after completion of crop cycle. The selected treatments were T₁ - 50 % NPK of recommended doses in groundnut-wheat sequence, T₂ - 100 % N P K of recommended doses in groundnut -wheat sequence, T₃ - 150 % N P K of recommended doses in groundnut -wheat sequence, T₄ - 100 % N P K of recommended doses in groundnut -wheat sequence + ZnSO₄ @ 50 kg/ha once in three year to groundnut only (i.e. '99, 02, 05 etc), T₅ - N P K as per soil test, T₆ - 100 % N P of recommended doses in groundnut -wheat sequence, T₇ - 100 % N of recommended doses in groundnut -wheat sequence, T₈ - 50 % N P K of recommended doses in groundnut -wheat sequence + FYM @ 10 t/ha groundnut and 100 % N P K to wheat, T₉ - FYM @ 25 t/ha to groundnut only, T₁₀ - 50 % N P K of recommended doses in groundnut -wheat sequence + Rhizobium + PSM to groundnut and 100 % N P K to wheat, T₁₁ - 100 % N P K of recommended doses in groundnut -wheat sequence (P as S S P) and T₁₂ - Control. The water soluble Zn was present in negligible quantity. Exchangeable forms of Zn differed significantly at 12^th year. Potassium enhanced the utilization of exchangeable form of Zn. The application of FYM recorded the highest value of DTPA-Zn at 12^th year. Total Zn content differed significantly in T₉ (34.55 ppm), while residual form of Zn was found non significant at 12th year. The Y x T interaction were found significant after 12^th year in DTPA-Zn, reducible-Zn, per cent available and total available-Zn.

Keywords

Ltfe Soils, Zn Fractions, Water Soluble-zn, Exchangeable-zn, Dtpa-zn, Total Available-zn, per Cent Available-

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J. V. Polara ¹, B. M. Hadiya ¹, A. V. Rajani ¹

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

Abstract

In order to study the fluctuation of wells/tube wells water table, 30 sites each from 4 talukas of Dev Bhumi Dwarka district from where water table depths were measured before and after monsoon. In all, 94 wells and 26 tube wells water table levels were studied in May, 2015 and again after 6^th month in November, 2015. The water table before monsoon (May, 2015) in wells and tube wells ranged from 3.05 to 27.44 and 6.71 to 192.1 with mean value of 15.56 and 75.99 m, respectively. At the end of the monsoon (November, 2015), the overall water table of Dev Bhumi Dwarka district in well ranged from 1.83 to 18.29 and in tube well from 5.49 to 51.83 m with mean value of 5.79 and 21.39 m, respectively. The minimum fluctuation of water table of well (7.72 m) and tube well (21.55 m) was observed in Dwarka taluka. The maximum fluctuation of water table in well (12.73 m) and tube well (104.37 m) was observed in Bhanvad taluka.

Keywords

Water Table Fluctuation, Well/Tube Well, Water Table.

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