National Agricultural Research Foundation Institute of Soil Mapping and Classification Larissa Greece;
National Agricultural Research Foundation Institute of Soil Mapping and Classification Larissa Greece;
National Agricultural Research Foundation Institute of Soil Mapping and Classification Larissa Greece;
Faculty of Agriculture University of Kafrelsheikh Kafr El-Sheikh Egypt;
Fly ash; Sewage sludge; By-product of coal combustion; Wheat biomass product; Soil property;