Agronomic and P recovery efficiency of organomineral phosphate fertilizer from poultry litter in sandy and clayey soils

• Autor(a) principal: Sá, Jerusa Maia e
• Data de Publicação: 2017
• Outros Autores: Jantalia, Cláudia Pozzi, Teixeira, Paulo César, Polidoro, José Carlos, Benites, Vinícius de Melo, Araújo, Adelson Paulo
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Pesquisa Agropecuária Brasileira (Online)
• Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/24713
• topic: Zea mays; biomass accumulation; phosphate fertilization; P recovery efficiency; tropical soils; Zea mays; acúmulo de biomassa; adubação fosfatada; eficiência de recuperação de P; solos tropicais

The objective of this work was to evaluate agronomic and P recovery efficiencies of a granulated organomineral phosphate fertilizer (OMF) produced from poultry litter, compared with those of monoammonium phosphate (MAP), in soils with different textures. The experiment followed a 2x2x4+2 factorial arrangement, with two Oxisols (sandy loam and clay loam textures), two sources of P (OMF and MAP), four levels of P (50, 100, 200, and 400 mg kg-1), besides two control treatments without P application. The treatments were evaluated in 10-kg pots filled with soil, during four successive cultivations of corn without replacing the P absorbed by the plants, in order to evaluate the actual and residual effects of the fertilizers. Available P contents in the soil were higher with the MAP fertilizer in the sandy loam soil, with no significant differences between fertilizers in the clay loam soil. OMF had a greater immediate effect and promoted a higher dry matter yield in the first cultivation; however, the residual effects of the fertilizers did not differ in the other cultivations. P accumulation by plants was not affected by the fertilizer used. OMF had higher agronomic efficiency, but P recovery efficiency did not differ significantly between fertilizers. OMF performance indicates good potential use of poultry litter as fertilizer, in organomineral formulations.