DELINEATION OF PHOSPHORUS FRACTIONS AND DIFFERENT PHYSICO-CHEMICAL PROPERTIES OF NORTH GUJARAT REGION SOIL

R.U. NIMBALKAR¹, S.K. GHODKE²*, K.C. OMBASE³, V.R. PATEL^4
1Central Sugarcane Research Station, Padegaon, 415521, Phaltan, Mahatma Phule Krishi Vidyapeeth, Rahuri, 413722, M.S., India
²Central Sugarcane Research Station, Padegaon, 415521, Phaltan, Mahatma Phule Krishi Vidyapeeth, Rahuri, 413722, M.S., India
³Central Sugarcane Research Station, Padegaon, 415521, Phaltan, Mahatma Phule Krishi Vidyapeeth, Rahuri, 413722, M.S., India
⁴Department of Soil Science and Agricultural Chemistry, Chimanbhai Patel College of Agriculture, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, 385506, Gujarat, India
* Corresponding Author : ghodkesk18@gmail.com

Received : 20-07-2023     Accepted : 28-08-2023     Published : 30-08-2023
Volume : 15     Issue : 8       Pages : 12606 - 12609
Int J Agr Sci 15.8 (2023):12606-12609

Keywords : Phosphorous fractions, Physico-chemical properties, North Gujarat soil
Academic Editor : Sunil Mandi
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Central Sugarcane Research Station, Padegaon, 415521, Phaltan, Mahatma Phule Krishi Vidyapeeth, Rahuri, 413722, M.S., India and Department of Soil Science and Agricultural Chemistry, Chimanbhai Patel College of Agriculture, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, 385506, Gujarat, India
Author Contribution : All authors equally contributed

A study was undertaken to delineate status of available nutrients, chemical properties and fractionation of phosphorus in soils of seven district of North Gujarat. Total 305 representative surface soil samples were collected (2016) using random sampling. The soil samples were analyzed for available nutrients (N, P, K and S), physico-chemical properties viz., soil texture, pH, EC, O.C., CaCO? and fractions of P. Soils of North Gujarat region are slightly acidic to basic in reaction with pH 6.3 to 9.15 (7.86). EC 0.6 to 1.67 (0.49) dS m-1. The organic carbon 0.25 to 8.90 (3.81) g kg-1; calcium carbonate 2.5 to 182.5 (25.93) g kg-1. Available N 27.93 to 209.44 (95.32) mg kg-1, available P 6.61 to 52.93 (21.71) mg kg-1, available K 47.86 to 430.85 (158.890 mg kg-1, available S 5.35 to 73.15 (22.44) mg kg-1. The sand, silt and clay content were 50 to 95 (86.27) %, 2.50 to 37.50 (6.67) % and 2.50 to 30 (7.14) %, respectively. The major soils were loamy sand in texture. The Saloid P content in the soil samples 16.35 to 98.54 (43.95) mg kg-1. The Al-P content 13.55 to 69.02 (39.62) mg kg-1, Fe-P 48.95 to 149.35 (100.80) mg kg-1, Ca-P 52.42 to 203.11 (96.66) mg kg-1, Occluded P 3.85 to 14.35 (10.76) mg kg-1 and Reductant soluble P 4.76 to 59.50 (31.08) mg kg-1. The inorganic P fractions were decreasing order Fe-P>Ca-P>Saloid P>Al-P>RS-P>Occluded P. The total inorganic P 194.54 to 390.76 (322.87) mg kg-1, organic P 98.25 to 288.15 (149.36) mg kg-1, total P 366.12 to 610.20 (472.23) mg kg-1 and available P 6.61 to 52.93 (21.71) mg kg-1. It was indicated that inorganic P fractions were active (68.28 %) as compared to organic P (31.72 %) of soil towards the total P content of soils of North Gujarat region

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