Thumbnail Image

Birsa Agricultural University, Ranchi

Browse

19971
Reset filters
Subject: Agricultural Physics and Meteorology × Author: Binod Kumar × End date: 2018 ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Physical Characterization of Jorsol2 and Bandhi Soil Series under Subarnarekha Command Area
    (Birsa Agricultural University, Ranchi, 1997) Binod Kumar; Dr.K.D.Singh
    The study of physical properties of Bandhi and Jorsol 2 soil series in Darisai village under subernrekha command area revealed that upland soil were poor in organic matter contect, aggregation status , porosity density and hydro physical properties .Lowland soils however were better in these properties except that they were not well drained. Medium land soils were having an intermediate position in relation to these properties. The soils were sandy loam and clay loam in texture (Sand varying from 40.00 to 70.00 per cent silt from 10.00 to 24.00 per cent and clay from,( 14.00 to 32.00 per cent).Upland soils in both the soil series had relatively lighter texture then low land soils, medium land soils occupying the intermediate position. Bulk density of upland soils were higher (varying from 1.51 to 1.58gcm-3) than in lowland (varying from 1.34 to 1.40gcm-3).Medium land soils had intermediate values (varying from 1.46 to 1.52 gcm-3) Total porosity of all the soils was around 45 percent having an increasing trend down the slope of the land from upland to low land. Aeration porosity of all the soils was good (varying fron 14 to around 20 percent. All the soils were acidic in nature (ph varying in between 4.9 and 5.8) and low in organic matter contect (from 0.12 to .59 per cent)in 0-60 cm soil layer. Aggregation status as indicated by geometric mean diameter (G.M.D. ) increased down the slope of the land in 0-60 cm soil layer The available soil moisture storage capacity increased down the slope of the land ( around 89 cm in upland 93 mm in medium land and 101 mm in low land) following the trend of variation in clay content. Steady state infiltration rate (IR)and cumulative infiltration (C.I.) decreased down the slope of the land from upland to medium and to low land.(I.R.varying from around 5.5 cm hr-1 in upland to 2.3 cm hr-1 in low land and c.i. varying from 31 cm in upland to around 15 cm in low land).Hydraulic conductivity also followed the same trend ( varying in between 5.45 cm hr-1 and 2.18 cm hr-1).