تأثير معاملات التسميد المختلفة في تراكيز بعض المعادن الثقيلة في التربة و نبات السلق

الملخص EN

A field experiment was carried out in calcic loamy soil in the Faculty of Agriculture Farm (abu Jerash) in the city of Damascus to study the effect of city compost, mushrooms substrate residues, poultry manure and inorganic fertilization in the availability of heavy metals in the soil and control, the accumulation of heavy metals in soil and chard and degree of toxicity.

The results showed that the concentration of cadmium, lead, chromium, copper, zinc in DTPA extract of soil did not exceed the allowed levels of the concentrations of heavy metals in the soil.

City compost treatment showed significant differences in the content of chard iron, zinc, manganese, copper, compared to the control treatment, mineral fertilization and mixed fertilization (50% organic fertilization +50% mineral fertilization).

The concentrations of lead, cadmium and chromium in chard did not exceed the natural concentrations of heavy metals in the plant tissues.

There was a significant increase in the values of those elements in the treatments of the organic fertilizers and private city compost compared to the control treatment and inorganic fertilization