Cercetarea fluctuaţiilor cantitative în acumularea şi valorificarea deşeurilor zootehnice în Republica Moldova

Abstract

Based on the information provided by Moldovan statistics year books, the analysis of dynamics of manure production and its usage is presented for the period 1950 - 2010. The largest amount of manure amounting to 15.6 - 16.6 million tons per year was produced during the period 1981 - 1990. The highest level of usage, 58 - 82 percent of the total produced quantity, was registered during the same period. During the mentioned period about 4.4 - 6.0 tons of waste was distributed per ploughed hectare annually. In 2006 - 2010, the smallest amount of manure was produced, about 3.4 - 4.5 million tons per year, and even less was used, about 0.1 - 0.2 percent of the produced amount. Even if for 1 invested dollar, about 1.6 - 3.6 lei are recovered by the production increase over the following four years, the main reason of the allegedly ignored attitude towards the usage of manure lies in the lack of financial and technical resources necessary to prepare and apply manure. These costs can vary between 160 and 360 lei per ton (10 to 23 Euro/t).