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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
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Index Copernicus ICV 2017: 100.00
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Int.J.Curr.Microbiol.App.Sci.2019.8(1): 322-341
DOI: https://doi.org/10.20546/ijcmas.2019.801.034


Relative Efficiency of Udaipur Rock Phosphate Combined with Amendments in Acid Soils of Odisha, India
Debasis Sarangi, Dinabandhu Jena and Kabita Mishra
Orissa University of Agriculture and Technology, Bhubaneswar-751003, Odisha, India
*Corresponding author
Abstract:

A pot culture study was conducted during February, 2014 to evaluate the effect of organic manure, PSB or lime on Udaipur Rock Phosphate (URP) dissolution, P and Ca availability and biomass yield of hybrid napier grass in three different acid soils (Typic Halpludalf) in Odisha, India. The experiment was conducted in a completely randomized design (CRD) with three replications and 18 treatments consists of 3 low pH soils - S1 (pH-4.15), S2 (pH-5.03), S3 (pH-5.82) and six rock phosphate treatments - T1-Control, T2-200%P through URP, T3-50%P through URP+50%P through SSP, T4- 100%P through URP +FYM @5 tha-1, T5-100%P through URP +PSB @ 10 kg ha-1 and T6-100% P through URP + lime @ 0.2 LR (Lime Requirement). The URP namely sourced from FCI Aravali Gypsum and Minerals India Limited (FAGMIL), Jodhpur contains 7.8% total P, 25.6% Ca, 0.26% Mg and 0.24% K indicating a moderate reactive material. Application of URP alone or with amendments increased soil pH significantly, attained its peak at 4th cutting and then decreased gradually, but remained above the initial value at the end of 8th cutting. Among the treatments, URP + lime (T6) recorded highest pH value followed by 200% URP(T2) and URP + SSP(T3) in all soils. Available P in control decreased gradually during the growth period. In other treatments, P content increased and attained its peak at 2nd cutting, there after declined but remained above the initial value at the end of 8th cutting irrespective of the soils. P build up in sole URP (200% P) treatment was maximum (11 – 14.5 kg ha-1) followed by URP +SSP (8.9 – 12.3 kg ha-1) and URP + lime (6.8-9.0 kg ha-1). Exchangeable calcium content in control is decreased by 52-58% over the initial value due to crop removal. Combined application of URP + SSP recorded highest exchangeable calcium content followed by URP + lime and URP alone. Sole application of URP recorded highest biomass yield in S1 (44%) and S2 (41%) whereas, URP+SSP recorded highest yield in S3 (47%) might be due to the dissolution of URP got slower with increased in soil pH (S3). The relative agronomic effectiveness (RAE) of URP was higher when it was applied at higher dose (T2) in low pH soil viz. S1 (107%) and S2 (108%) but the efficiency decreased in S3(76%). The efficiency of URP is greatly influenced by soil pH and exchangeable calcium content of soils.


Keywords: Hybrid napier grass, Udaipur rock phosphate, SSP, acid soils, Lime, PSB, Farmyard manure, Biomass, Available P, Exch. Ca
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How to cite this article:

Debasis Sarangi, Dinabandhu Jena and Kabita Mishra. 2019. Relative Efficiency of Udaipur Rock Phosphate Combined with Amendments in Acid Soils of Odisha, India.Int.J.Curr.Microbiol.App.Sci. 8(1): 322-341. doi: https://doi.org/10.20546/ijcmas.2019.801.034