A Poultry Litter-Derived Organomineral Phosphate Fertilizer Has Higher Agronomic Effectiveness Than Conventional Phosphate Fertilizer Applied to Field-Grown Maize and Soybean

Autor(es)

Frazao, Joaquim Jose ^{[1, 2]} ; de Melo Benites, Vinicius ^[3] ; Pierobon, Vitor Mateus ^[4] ; Ribeiro, Joao Victor Schiavon ^[4] ; Lavres, Jose ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Maranhao, Dept Agr Sci, 1000 Lourenco Vieira, Silva Ave, BR-65055310 Sao Luis, Maranhao - Brazil

^[2] Univ Sao Paulo, Ctr Nucl Energy Agr, 303 Centenario Ave, BR-13400970 Piracicaba - Brazil

^[3] EMBRAPA Soils, 1024 Jardim Botanico St, BR-22460000 Rio De Janeiro - Brazil

^[4] Univ Sao Paulo, Luiz Queiroz Coll Agr, 11 Padua Dias Ave, BR-13418900 Piracicaba - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SUSTAINABILITY; v. 13, n. 21 NOV 2021.
• Citações Web of Science: 0

Resumo

Inadequate disposal of poultry litter (PL) may promote eutrophication of water bodies due to its high nutrient content, including phosphorus (P). Thus, recycling P from PL to produce organomineral fertilizer (OMF), reduces the dependence on finite mineral P reserves, and also reduces P losses from soil. In this context, a field experiment was carried out to assess the agronomic effectiveness of a granular PL-derived OMF applied to maize and soybean in a highly weathered tropical soil. OMF was compared to single superphosphate (SSP) at five P rates between 0 and 70 kg ha(-1). The shoot dry weight (SDW) and grain yields of soybean and maize were affected by P rates; however, no difference between OMF and SSP was found. A similar trend was observed for soil P and P uptake. The leaf P content and soil pH were not affected by either P sources or P rates. Although there was no difference between OMF and SSP on the crop yields, OMF had the highest relative agronomic effectiveness based on the SDW. These results show that the production of granular OMF from PL is a viable alternative to conventional P fertilizers and reduces the dependence of mineral P reserves. (AU)

• Processo FAPESP: 13/22173-4 - Métodos isotópicos (32P), bioquímicos e fisiológicos na avaliação agronômica de fertilizantes organominerais granulados pelas culturas do milho e da soja
• Beneficiário: Joaquim José Frazão
• Modalidade de apoio: Bolsas no Brasil - Doutorado