Vertical distribution of DTPA-extractable Zn, Cu, Mn and Fe in some soils of Tarai and Rohilkhand plains in relation to soil properties
2007
Mishra, Peeyush | Singh, S. K. | Srivastava, P.C. | Singh, Sobaran
Depthwise distribution of available Zn, Cu, Mn and Fe in soils extracted by DTPA was studied in relation to some physical and chemical properties. Results showed that soil pH ranged from 6.42 to 8.02, EC 0.31 to 0.59 dSm-1, CaCO3 0.40 to 0.86%, CEC 8.09 to 18.20 c mol(P+) kg-1 and organic carbon 0.26 to 1.32 per cent. The DTPA-extractable Zn, Cu, Mn and Fe contents ranged from 0.18 to 2.08, 0.57 to 2.48, 1.32 to 45.63 and 3.07 to 21.35 mg kg-1, respectively. Maximum concentration was recorded in surface soil and in general it decreases with depth. Soil pH showed a significant negative correlation while organic carbon, CEC and clay content was significantly and positively correlated with DTPA-Zn. The CaCO3 showed a significant negative correlation whereas clay content showed significant positive correlation with DTPA- Mn and Fe. Thus, soil properties have a major role to play in supplying plant nutrients from soil.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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تم تزويد هذا السجل من قبل Indian Council of Agricultural Research