National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
An investigation was carried out in cultivated paddy fields of valley districts of Manipur to study the distribution of micronutrients and some soil physico-chemical properties as well as their correlation. Results revealed that most of the studied samples (71.15 per cent) belonged to clay texture and were acidic in reaction ranges between 4.9 (very strongly acid) to 6.6 (slightly acid). The soils were low in electrical conductivity varied from 0.05 to 0.26 dSm-1 and rich in organic carbon (0.79 to 5.82 %) having CEC value ranged from 7.9 to 27.3 meq/100 gm. Higher value of CEC might be due to close positive association between clay content and CEC. The nitrogen, phosphorus and potassium content of the samples varied from 150.53 to 614.66 kg ha-1, 10.80 to 27.89 kg ha-1 and 106.60 to 630.45 kg ha-1 showing more than half of the studied samples were medium in available nitrogen content, 53.85% were low and 46.15% were medium in available P2O5 content and 51.92% were medium in available K2O content. At different soil samples collected from various locations, distribution of DTPA-Fe were very high ranging from 18.21 to 75.63 mg kg-1, high DTPA-Cu ranging from 0.94 to 2.90 mg kg-1, well supplied DTPA-Mn ranging from 12.37 to 58.24 mg kg-1 and most of the soils were deficient in DTPA-Zn varied from 0.08 to 0.79 mg kg-1, respectively. Further, correlation studies revealed that DTPA-extractable Fe showed a positive and significant correlation with OC (r= 0.281*), DTPA-Zn with EC (r=0.602**) and DTPA-extractable Mn showing a positive and significant correlation with pH (r= 0.286*) and clay (r= 0.279*) in soil. However, there was a negative and significant correlation with sand (r= -0.467**) in case of DTPA-extractable Mn.
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