Composition of Poultry Litter in Southern Brazil

Abstract

ABSTRACT:Determining the chemical composition of poultry litter is important in order to apply this waste as soil fertilizer without causing negative environmental impacts. The aim of this study was to evaluate the average and variability of some chemical parameters of 165 samples of poultry litter produced from confined animal production facilities located in the states of Santa Catarina and Rio Grande do Sul, Southern of Brazil. Samples of approximately 5.0 L were collected on 20 points from the truck at the time the material was unloaded into the application sites. Subsequently, they were oven-dried at 65 °C and analyzed. Values of pH in water, dry matter, N, P and K were determined in all samples; N soluble in water (soluble-N), ammonium (NH + 4 -N) and nitrate (NO − 3 -N) were quantified in 50 samples; organic carbon (organic-C) and C/N ratio were assessed in 20 samples. There was large variation in the contents of N, P 2 O 5 and K 2 O among samples, with the average accounting for 2.2, 3.0 and 2.9 %, respectively; these nutrients correlated with each other. More than 90 % of the N was in the organic form, into which the fraction soluble in water accounted for 21.8 % of the total. Inorganic N was predominantly in the form of ammonium (NH + 4 -N), and nitrate (NO − 3 -N) was absent. Average dry matter was 64.3 %, with a median of 66.5 %; pH was always alkaline (average of 7.8), with a low variation coefficient (7.4 %), and was negatively correlated with NH + 4 -N. The average of organic C and C/N ratio in dry matter was 28.3 % and 11.2, respectively, which results in the immediate release of N to the soil, with no microorganism immobilization. The chemical composition of poultry litters produced in confined systems in Southern Brazil is widely variable. Thus, to be successfully used as soil fertilizer, it is essential to know their composition, mainly in terms of moisture N, P 2 O 5 and K 2 O contents.

Organic, mineral and organomineral fertilizer in the growth of wheat and chemical changes of the soil

“…The content of NH 4 + in the soil (Table 4) reduced until the 30 DAI due to the nitrification process. Between the treatments, the lowest values observed for the BL 100, in relation to MF 100, can be attributed to the fact that part of the N present in the broiler litter is linked to more stable organic compounds, which need to be decomposed to make their nutrients available in the soil (Lourenço et al, 2013), as well as to a predominance of the nitric fraction in the broiler litter used in this study, which is not normally observed in this type of material (Rogeri et al, 2016).…”

“…Considering the treatments that received equivalent doses of N (OMF 100, BL 100 and MF 100), nitrate concentration peaks in the soil were observed at the 43, 44 and 47 DAI for organomineral, mineral and organic sources, respectively. The tardiest peak for the BL 100 indicates a delay in the nutrient release process, because it is linked to stable organic fractions, thus retarding its solubilization (Rogeri et al, 2016).…”

Organic Residues and Bokashi Influence in the Growth of Alibertia edulis

“…Globally, Brazil is the largest exporter of chicken meat; the number of poultry produced in 2015 was 5.79 billion (IBGE, 2015). As each bird produces approximately 1.8 kg of residue (Rogeri et al, 2016), the production of poultry manure is estimated to be 10.450 t year -1 .…”

“…Poultry manure is characterized by a high nutrient content, low decomposition rate, and conditioning effect when added to the soil; it is therefore a viable alternative in the nutritional dynamics of the soil, mainly because it contains nitrogen in the organic fraction (Eguchi et al, 2016;Rogeri et al, 2016), which favors the use of nutrients by plants during the growth cycle.…”

Chemical, Thermal, and Spectroscopic Analysis of Organomineral Fertilizer Residue Recovered from an Oxisol

“…In the last decades, animal and vegetable waste and biochar have been used as alternative P sources (Pagliari et al, 2010; Pagliari and Laboski, 2013, 2014; Schröder et al, 2010; Waldrip et al, 2015; Lustosa et al, 2017). Poultry litter stands out as a waste product with interesting features because of its high concentration of P and organic acids (Pagliari and Laboski, 2012), in addition to the presence of N, K, Ca, and Mg (Rogeri et al, 2016).…”