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

Joaquim José Frazão, Vinicius de Melo Benites, Vitor Mateus Pierobon, João Victor Schiavon Ribeiro and José Lavres
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Joaquim José Frazão: Department of Agricultural Sciences, Maranhão State University, 1000 Lourenço Vieira da Silva Avenue, São Luís 65055-310, Brazil
Vinicius de Melo Benites: EMBRAPA Soils, 1024 Jardim Botânico Street, Rio de Janeiro 22460-000, Brazil
Vitor Mateus Pierobon: “Luiz de Queiroz” College of Agriculture, University of São Paulo, 11 Pádua Dias Avenue, Piracicaba 13418-900, Brazil
João Victor Schiavon Ribeiro: “Luiz de Queiroz” College of Agriculture, University of São Paulo, 11 Pádua Dias Avenue, Piracicaba 13418-900, Brazil
José Lavres: Center for Nuclear Energy in Agriculture, University of São Paulo, 303 Centenário Avenue, Piracicaba 13400-970, Brazil

Sustainability, 2021, vol. 13, issue 21, 1-11

Abstract: 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.

Keywords: Zea mays; Glycine max; single superphosphate; available phosphorus; recycling fertilizer; weathered soil; oxisol (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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