Tuesday, November 6, 2007
187-4

Compost Preparation Technology and its Influence Soil Properties.

Sindor Pardaev, Samarkand State University, Department of Biology, University blvd, 15, Samarkand, Uzbekistan

Preparing household and agricultural waste products through punching, improves their agricultural chemical properties. Acting as organic fertilizers, they increase the biological circulation of carbon, nitrogen and ash of elements. In order to get desired results, size of punch and selection of waste product must be considered. Good compost candidates for punching are: manure of large horned cattle, urban firmly-household wastes straw grain cultures and silt of fresh waters. The agricultural effectiveness and chemical properties of the punch material depends on the chemical structure and biological properties of the initial components. Organic waste products considerably differ on chemical structure under the contents of dry substance in them 33.7-73.1 % changes in an interval, and pH-6,0-7,5 of silt of fresh(stale) waters which have ashput (86.1 %), and muck of straw on a therefore parameter differs (4.5; 4.3 %) firm - household wastes occupy average conditions (8.9) under the contents of carbon. Structure of punch includes all three kinds of waste products. The share of silt of fresh waters in structure punch 20 %, and straw 10 %, share muck in structure of punch can be 50 and 30 %, and firmly-household wastes -20 and 40 % that is the structure of components changes depending on a share firmly-household wastes and muck. So punch into which structure is included 50 % muck and 20 % firmly-household wastes, 20 % of silt of fresh waters and 10 % straw differs by the increased contents of carbon than muck. It is necessary to note, that by punching of these structures it is possible to receive organic fertilizers from anyone organic wastes. For this purpose it is necessary to simulate structure punch in view of positive and negative qualities of waste products.