Data/hora: 26/04/2024 08:54:47

Biblioteca(s): 	Embrapa Solos.	
Data corrente: 	04/12/2018	
Data da última atualização: 	17/04/2019	
Autoria: 	FRAZÃO, J. J.; BENITES, V. de M.; RIBEIRO, J. V. S.; PIEROBON, V. M.; LAVRES, J.	
Afiliação: 	JOAQUIM JOSÉ FRAZÃO, USP/CENA; VINICIUS DE MELO BENITES, CNPS; JOÃO VICTOR SCHIAVON RIBEIRO, USP/ESALQ; VITOR MATEUS PIEROBON, USP/ESALQ; JOSÉ LAVRES, USP/CENA.	
Título: 	Agronomic effectiveness of a granular poultry litter-derived organomineral phosphate fertilizer in tropical soils: soil phosphorus fractionation and plant responses.	
Ano de publicação: 	2019	
Fonte/Imprenta: 	Geoderma, v. 337, p. 582-593, Mar. 2019.	
DOI: 	10.1016/j.geoderma.2018.10.003	
Idioma: 	Inglês	
Conteúdo: 	Production of organomineral phosphate fertilizers (OMF) from poultry litter (PL) has been suggested to reduce the dependence on phosphorus (P) reserves. Here, we compared a granular PL-derived OMF to triple superphosphate (TSP) in two contrasting tropical soils (Oxisol and Entisol) by using isotope dilution with 32P. Our study aimed to gain insight into soil P fractionation, and P availability to maize plants achieved by P fertilization (0, 25, 50, 75 and 100 mg kg-1 of soil), in order to investigate the agronomic effectiveness of OMF. Despite u-XRF maps revealing that the mixture of PL and TSP as OMF resulted in P hot spots disseminated in a lowconcentration background, whereas for the TSP treatment higher P concentration was uniformly distributed in the granules, there was no difference in maize yield and fertilizer P recovery (%R) between P sources in both soils. In the Oxisol, there was no difference between fertilizers in any of the soil P pools, but larger readily phytoavailable P and smaller moderately labile P fractions were obtained with OMF. In the Entisol, the labile P pool was larger with TSP. Nevertheless, acid and alkaline phosphatase activity and microbial biomass were affected by P rate and P source. The results show that OMF is an effective substitute for conventional phosphate fertilizers, since OMF promotes P recovery, plant P uptake and biomass yields compared to those obtained with TSP.	
Palavras-Chave: 	Fertilizante de liberação lenta; Fração de fósforo no solo.	
Thesagro: 	Diluição Isotópica; Oxisol; Zea Mays.	
Thesaurus Nal: 	Entisols; Oxisols.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
Registro original: 	Embrapa Solos (CNPS)	
Exemplares: 	CNPS - (20028-1) - UPC - AP - DD -  -  - 2018.00317 - DIS