Nutrient and aluminum availability of alum-amended poultry litter: a long-term weathering study

Abstract

To develop agronomic application rates for alum-amended poultry litter, nutrient and Al availability of this particular organic fertilizer were examined using long-term field weathering studies. It was revealed that concentrations of N, P, K + , and Al 3+ in the poultry litter leachate ranged from 5 to 6,503 mg L -1 , 2 to 84 mg L -1 , 2 to 5135 mg L -1 , and 0.05 to 4.6 mg L -1 , respectively. Release of nutrients occurred principally in the first growing season and would last for years. During 19 months of field weathering, 10.5 kg N, 1.1 kg P, 34.5 kg K + , and 0.031 kg Al 3+ were released per ton of the poultry litter and recovered in the leachate. The results suggest that no Al toxicity would be generated to crops if alum-amended poultry litter is used as a fertilizer. If applied at 13.3 ton ha -1 , the poultry litter will supply 150.0 kg ha -1 N, 15.2 kg ha -1 P, and 456.2 kg ha -1 K + to seasonal crops. Application of alum-amended poultry litter at available N-based rates will meet crop nutrient requirements while minimizing nutrient runoff losses.

Biochar, farmyard manure and poultry litter on chemical attributes of a Distrophic Cambissol and soybean crop

“…Increasing the doses of the organic amendments, P adsorption sites in the soil can have been blocked by the strong bonding of carboxylic and phenolic functional groups of the organic matter to the hydroxyls of the Fe and Al oxides, competing with P adsorption sites and increasing the availability of that nutrient for the plants (Guo & Song, 2010). The organic amendments can be a phosphorus sources for agriculture, mainly those originating from monogastric animal excrements, such as poultry, that have low feed use efficiency (Szogi et al, 2010).…”

Stacking Time and Aluminum Sulfate Effects on Polyether Ionophores in Broiler Litter

“…This stacking of litter may enhance natural degradation of the ionophores. Moreover, aluminum sulfate (alum) is commonly added to broiler litter to reduce ammonia gas release in the stacking house and for other benefits to water and soil quality when the litter is land‐applied (Shreve et al, 1995; Moore et al, 1998; Moore et al, 2000; Moore and Edwards, 2005; Warren et al, 2006; Sistani et al, 2006; Guo and Song, 2010; Moore, 2011). Alum decreases the pH of broiler litter and may enhance the abiotic hydrolysis of the ionophores because these compounds degrade at low pH (Bohn et al, 2013; Sun et al, 2013b; European Food Safety Authority, 2004).…”

Emissão de amônia, retenção de nitrogênio e valor fertilizante de cama de frango tratada com aditivos químicos

“…Contudo, outros processos podem contribuir para a diminuir a perda de 𝑁𝐻 3 . É importante considerar, por exemplo, que o 𝑍𝑛 2+ reduz a atividade da uricase ) e a população de microrganismos uricolíticos, aumentando, por estas razões, a retenção de ácido úrico na cama de frango (Tomlinson et al, 2015), mantendo adequado suprimento de N e 𝑆𝑂 4 2− durante os primeiros 50 dias que sucedem a aplicação (Guo & Song, 2010). A quantidade absorvida pela planta, a produção de matéria seca e os índices fisiológicos estão diretamente relacionados com a disponibilidade de N no solo (França et al, 2011).…”

“…Estudo de longo prazo conduzido por Moore & Edwards (2005) também demonstraram que a cama de frango tratada com 𝐴𝑙 2 (𝑆𝑂 4 ) 3 aumentou o crescimento e não alterou o conteúdo de Al nas plantas. Resultados obtidos porGuo & Song (2010) indicam que a adubação com cama de frango tratada com 𝐴𝑙 2 (𝑆𝑂 4 ) 3 não causa toxidade por Al às plantas.…”