Investigating Heavy Metal Levels of Greenhouse Soils Using Long-Term Livestock Manure

The use of eco-friendly compost, such as livestock manure, has increased due to the environmental pollution chemical fertilizers. However, many farmers manure and inorganic fertilizer together, leading excessive soil nutrients. Also, includes heavy metals, so long-term could increase metal levels, particularly in greenhouse soils. Therefore, this study aims investigate concentrations soils using manure. were collected from 24 greenhouses applying for 5 - 32 years Gyeongnam province, Korea. characteristics analyzed. As a result, pH, organic matter, available phosphorus, exchangeable-Ca, Mg, K most higher than average values Gyeongnam. As, Cd, Cr, Cu, Ni, Pb, Zn levels studied also exceeded greenhouses’ values. Moreover, three 394.4 mg kg-1, 305.3 323.2 which Korean threshold 300 kg-1. Cu these showed other soils, accumulation was mainly concerned with Thus, would be recommended regular monitoring food safety.Copper zinc compost (red line: value, blue soil).