Organic Waste Amendments and Their Effect on Heavy Metal Retention in Soil and Garlic

Abstract

A lot of money is spent on chemical fertilizers in South Asia, so organic fertilizers are being researched. This study was based on the effects of different types of organic wastes such as poultry waste, press soil, and farmyard manure on the mobility of heavy metals in soil and their accumulation in garlic, a commodity consumed by humans, and its health effects. protects Risks From the results, we observed that humus leads to the accumulation of some metals, including Zn, Cu, Fe and Co, while metals such as Mn, Cd, Cr and Pb are reduced. Sludge from the press raised Cd, Cr, Fe and Pb contents in garlic while poultry litter increased Zn and Cu. Farmyard manure affects cobalt, Co and Mn in soil in the following manner. The highest PLI was observed for copper with pressed soil and the highest HRI level for cadmium with pressed soil. Zinc, however, was the highest daily intake when poultry waste was used, and lead was the highest bioaccumulated in garlic grown in press soil. This study demonstrated that garlic grown in soil amended with contaminated organic manure is potentially harmful if eaten.