Production of compost fertilizer from tree branches Jan 18, 2021 As the winter season approaches, the Deputy of Municipal Services of Tehran Municipality prunes additional tree branches in order to prevent possible dangers due to snowfall and breaking trees, as well as in order for them to grow more every year. In previous years, these pruned branches were discarded without use. But now Tehran Municipality is using modern science to turn these branches into compost fertilizer and in addition to saving costs, it uses these composts in the green space of Tehran. Saeed Rabiee https://www.tehranpicture.ir/u/ali