it varies from crops to crops you may refer agriculture manual and soil properties for agriculture purpose you will get all the information required
Different countries have reported their own Maximum Allowable Level MAL for the contaminants in soil. These countries reported different MAL values, based on the differences in soil types, prevailed climatic conditions, groundwater levels and type of contaminations. Developing countries tend to be less tightly regulated despite some of them having undergone significant industrialization. You can't just use a reference MAL value for the metal set by any country and the best thing is to take the level reported by a country of similar climatic conditions and soil types.
Thank you Dr. Yehia H. Dawood for your corresponding, wish you good luck
Dear Dr. Ali,
Either you could check the recommendation about maximum allowable level of different heacy metal content in the soil by Dept. of Agriculture or EPA of that specific country. They can provide the information that which level of contamination in the soil they have permitted.
Regarding important crops you have mentioned that is bit unclear. But from my point of view, may be you can have a look which are the major agronomic crops are growning there. Mostly those crops use more soil and water resources from a country.
Regards
Arifin
Thank you Dr. Kumar Saxena & Dr. Arifin Sandhi for your corresponding, wish you good luck
Dear Dr. Ali,
Check the WHO and EPA websites for guideline values.
Have also a look on the following articles - may be useful.
Heavy Metals Contamination in Vegetables and its Growing Soil
https://www.omicsonline.org/open-access/heavy-metals-contamination-in-vegetables-and-its-growing-soil-jreac-1000142.php?aid=54210
Heavy Metals in Contaminated Soils: A Review of Sources, Chemistry, Risks and Best Available Strategies for Remediation
https://www.hindawi.com/journals/isrn/2011/402647/
Environmental Assessment of Heavy Metal Pollution and Human Health Risk
https://www.researchgate.net/publication/309463664_Environmental_Assessment_of_Heavy_Metal_Pollution_and_Human_Health_Risk
Regards
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