Improvement of DDT-based Production of Dicofol and Introduction of Alternative Technologies Including IPM for Leaf Mites Control in China
Dicofol is a cheap broad spectrum acaricide with excellent efficacy and is widely used for mite control on a wide variety of fruits and crops in agriculture. Dicofol has been produced in China since 1976. Production capability of Dicofol was once up to 10,400 metric tons/annum (MT/a) and production output has averaged about 3,500 MT/a in recent years. Currently, there are two enterprises producing technical-grade Dicofol within a non-closed system and one enterprise effectively producing the chemical in a closed system. Dicofol and its production need to be put under strict control in order to minimise the risk of DDT pollution that could occur due to accidents in the production process or poor utilisation.
This project has been launched in order to fulfill China’s obligations under the Stockholm Convention and reduce the release of DDT during the production and use of Dicofol.
Through the implementation of the project, the production and use of 2,800 tons of DDT will be phased out, and the potential risks of DDT due to residues in Dicofol products and release as wastes during Dicofol production will be minimised. Piloting and demonstration of alternative technologies, especially Integrated Pest Management (IPM) technology will provide China with suitable techniques and experiences for the duplication of the techniques nationwide and will ensure food safety.
On the production side, all anticipated outputs have been achieved. A joint ban was issued by ten ministries in 2009 on the production, distribution, use and import of pesticide Persistent Organic Pollutants, including the use of DDT as intermediate in the production of Dicofol. The closure of two non-closed system Dicofol production plants means that DDT-based Dicofol is no longer produced. Optimisation of the closed-system Dicofol production line means only Dicofol products with below 0.1% DDT content are available in the market today.
As a result, reductions of 2,800 MT/a DDT used as an intermediate in Dicofol production - minimising 1,350 MT/a DDT-containing waste discharge during production process - and 350 MT/a of DDT residues in Dicofol consumption have been effected.
On the consumption side, demonstration and promotion of IPM technology, Training of trainers and training activities conducted at Farmer Field Schools (FFS) and at the fields in the three demonstration counties have all yielded excellent results. 100,000 farmers have been trained in each year of the project to date.
Demonstration and promotion of IPM technology as a substitute for Dicofol has been efficiently implemented by the three local Project Management Offices. Alternatives have been selected and conversion has been promoted in over 12,000 hectares over three years. Farmers have been trained with IPM.
Who finances it?
|Provate Sector||US$ 800,000|
|Private Sector||US$ 500,000|
|Other Farmers||US$ 900,000|