Journal of the Indian Society of Soil Science
SCOPUS
  • Year: 1993
  • Volume: 41
  • Issue: 2

Adsorption of Zinc as Affected by Its Sources in Calcareous Soils

  • Author:
  • B. Prasad, I. Sarangthem
  • Total Page Count: 5
  • Page Number: 261 to 265

Department of Soil Science, Rajendra Agricultural University, Pusa, Samastipur, Bihar, 848125.

Abstract

The adsorption data were fitted into Langmuir equation and adsorption maxima were significantly correlated with free CaCO3, organic carbon and CEC. Step-down regression analysis indicates that CEC is important in predicting variation in adsorption maxima. Adsorption maxima. bonding energy and buffering capacity of zinc in soils from different sources varied in the order: ZnSO4 > Zn-FA > Zn-EDTA > Zn-DTPA. Supply parameter of zinc was highest in Zn-EDTA treatment (7.02) and the lowest in ZnSO4 (1.52). High clay and calcareousness lower the supply parameter.

Keywords

Zinc chelates, adsorption maxima, bonding energy, supply-parameter, differential buffering capacity, calcareous soil