Abstract
During the industrial production of broiler chicken, a large amount of manure is produced, of which easily contained nitrogen content (without pre-treatment) is released into the atmosphere as an air pollutant. In our experiments, we aimed to prepare compost tea, also known as water extract of compost, from pre-treated poultry manure in order to create a product can be utilized as liquid nutrient supply. The poultry manure source was the Baromfi-Coop Ltd. located in Nyírjákó, Hungary, where it was treated by composting. As a result of this pre-treatment of the poultry manure, its nutrient parameters improve and nitrogen is present in a form that is better utilized for plants. Furthermore, this product is suitable for further utilization and also can be the base material for a brand-new product. For this reason the effects of compost/water ratio, incubation time, low oxygen level, and extraction time on the parameters of the resulted product were studied in the frame of developing new soil-life enhancing microbial product, so-called compost tea.
 Chemical parameters of the compost used as base material strongly determined the properties of the resulted compost tea, especially the ratio of the various nitrogen forms, their concentration and the salt content. It was found that adding water at a higher rate that means 1/40 and 1/50 mixing ratios results in more cost-effective production. In the experiment the compost tea were held under oxygen-poor conditions, therefore pH of the extractions decreased, which influenced the quality and quantity of their nutrient content.
Highlights
Conventional agriculture is characterized by the use of a large amount of synthetic fertilizers and pesticides (Matson et al 1997)
Treating poultry manure by composting is increasingly widespread in order to modify nitrogen into a form which is more available for plants
Ogunwande et al (2008) studied the nitrogen forms in manure, and they found, that nitrogen content loss can be reduced by 71–88% thanks to the composting
Summary
Conventional agriculture is characterized by the use of a large amount of synthetic fertilizers and pesticides (Matson et al 1997). The importance of agriculture increases mainly due to population growth; traditional agriculture and traditional livestock production are becoming underrepresented compared to industrial husbandry. In many cases, this may result in increasing environmental load and risk of contamination (Gaál 2011). Concentrated livestock production is important in poultry farming, but the biggest problem is the large amount of chicken manure and the real challenge is manure storage and management (Gaál 2011). The composted manure that is the final product has two benefits: (1) its nitrogen content of absorbable form will not be eliminated, (2) it will not cause air and environmental pollution (Kithome et al 1999)
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call