Improved bovine manure treatment methods

Abstract

On a dairy farm where 2000 milk cows were maintained, crude solid manure deriving from the mixture of excrements and wheat straw, in the ratio of 1 kg straw: 9 l excrements, was subjected to aerobic and anaerobic fermentation. During the experiment, changes of temperature, volume, water contents organic matter contents, pH values, total macroelement contents and their low soluble forms were measured. Crude solid manure was converted by aerobic care into compost within 7 weeks; its volume was decreased by 2.3 times macroelement contents were decreased by 4 times as compared to unit volume of compost obtained by anaerobic care. Therefore, considerably higher economic effectiveness of compost production and application to cultivated areas was achieved.

U radu su prikazani rezultati istraživanja koje je sprovedeno na farmi sa 2000 muznih krava. Mešavina naturalnog čvrstog stajnjaka i slame strnih žita u odnosu 1 kg slame sa 9 l ekskremenata, je izlagana aerobnoj i anaerobnoj fermentaciji. Praćene su promene temperature, zapremine, sadržaja vlage sadržaja organske materije, pH vrednosti i sadržaja teškorastvorljivih makroelemenata u masi. Naturalni čvrsti stajnjak je aerobnom fermentacijom prevođen u kompost tokom nege u trajanju od 7 nedelja. Njegova zapremina se smanjila 2.3 puta, a sadržaj makroelemenata je opao 4 puta, u poređenju sa kontrolnim tretmanom dobijanja komposta anaerobnom fermentacijom stajnjaka. Time je postignuta značajno veća efikasnost i ekonomičnost proizvodnje komposta i njegove primene na poljoprivrednim zemljištima.