Organic materials and their effect on the adsorption and release of zinc in gypsum soils

Fahme, Ahmed Khalid; Al-jumaily, Mijbil Mohammed

doi:10.58928/ku24.15210

	Organic materials and their effect on the adsorption and release of zinc in gypsum soils
Kirkuk University Journal for Agricultural Sciences (KUJAS)
Volume 15, Issue 2, June 2024, Pages 66-70 PDF (441.55 K)
Document Type: Research Paper
DOI: 10.58928/ku24.15210
Authors
Ahmed khalid fahme^* ¹; Mijbil Mohammed al-jumaily²
¹Tikrit University
²2Department of Soil and Water Sciences, College of Agriculture, Tikrit University, Tikrit, Iraq.
Abstract
A zinc adsorption experiment was carried out on three soils with different gypsum contents to which sheep were added to increase the adsorption of zinc. Poultry, estimated at (12,026) kg. mg-1 zinc, but the lowest amount of zinc adsorbed on average was recorded in the third soil G3 (189 g.kg-1 gypsum) with mefoles from whole cow ears (8.99) kg.mg -1 A decrease in release values is observed at low levels of zinc addition. The reason may be due to the high content of organic matter in the soil, as organic complexes form with zinc ions, making it difficult to release, or due to the binding of zinc to specialized sites for adsorption, as the force of its displacement was insufficient, which led to the soil holding it. In addition to precipitation on the surfaces of metals and oxides, especially with the pH value (7.76-7.10), which encourages the precipitation of most minor elements, including zinc.
Keywords
organic manure; zinc; gypsum soils; organic poultry; adsorption

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