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Table 11. Comparison of heavy metal limit values in soil

by-Law on Soil
by-Law on Solid Waste Control Pollution Control
Type
PH<6 PH>6
mg/kg mg/kg mg/kg
Bullet 50 300 100

Cadmium 1 3 3
Chromium 100 100 100
Copper 50 140 100

Nickel 30 75 50
Zinc 150 300 300
Mercury 1 1,5 2

There is not yet a specifically developed standard for compost quality in our country. In by-

Law on Solid Waste Control and by-Law on Soil Pollution Control, it is insufficient for high
quality compost and there are some gaps. The statement stated in Article 10 of by-Law on Soil

Pollution Control that the compost should be hygienically perfect and not threaten the health of
humans and all living things is insufficient. The reason for this is that there is no criterion for

whether the compost is hygienically perfect and the standard does not clearly state the

parameters by which perfection will be determined. Especially if the processed compost will be
used for various purposes, limit values of parameters such as pH, mineral content and particle

distribution of the final compost should be determined, compost quality classes suitable for
various purposes should be developed and expressed according to the compost quality class in

the standard.

Organic fertilizers and soil enrichers of animal origin must be produced within the framework
of the criteria specified in the "Regulation on Animal By-Products Not Intended for Human

Consumption" published in the Official Gazette dated 24.12.2011 and numbered 28152 and the
Communiqués and Instructions based on this Regulation (Official Gazette, 2018). The criteria

of the fertilizer are evaluated within the scope of the 'Regulation on Organic, Mineral and
Microbial Source Fertilizers Used in Agriculture' published by the Ministry of Food,

Agriculture and Livestock in the Official Gazette dated 23 February 2018 and numbered 30341.

In accordance with this regulation, enterprises must obtain a license and registration certificate.
Companies that do not have these documents cannot supply vermicompost to the market.

Companies that do not have these documents must obtain the necessary documents within ten
months. Penal action is initiated for businesses that do not complete their documents during the

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