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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
04/12/2018 |
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Data da última atualização: |
17/04/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FRAZÃO, J. J.; BENITES, V. de M.; RIBEIRO, J. V. S.; PIEROBON, V. M.; LAVRES, J. |
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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. |
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Título: |
Agronomic effectiveness of a granular poultry litter-derived organomineral phosphate fertilizer in tropical soils: soil phosphorus fractionation and plant responses. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Geoderma, v. 337, p. 582-593, Mar. 2019. |
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DOI: |
10.1016/j.geoderma.2018.10.003 |
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Idioma: |
Inglês |
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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. |
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Palavras-Chave: |
Fertilizante de liberação lenta; Fração de fósforo no solo. |
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Thesagro: |
Diluição Isotópica; Oxisol; Zea Mays. |
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Thesaurus Nal: |
Entisols; Oxisols. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
null
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Registro original: |
Embrapa Solos (CNPS) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agrossilvipastoril. Para informações adicionais entre em contato com cpamt.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
02/12/2021 |
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Data da última atualização: |
04/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
BERTOGNA, K. F.; MOREIRA, P. S. A.; GOMES, F. J.; KACHIYAMA, F. B.; GROTH, A.; REZENDE, M. O.; MAGALHÃES, C. A. de S.; LOPES, L. B. |
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Afiliação: |
KÁSSILA FERNANDA BERTOGNA, UFMT, Sinop-MT; PAULO SÉRGIO ANDRADE MOREIRA, UFMT, Sinop-MT; FAGNER JÚNIOR GOMES, USP-ESALQ, Piracicaba-SP; FERNANDO BARBOSA KACHIYAMA, UFMT, Sinop-MT; ANDRESSA GROTH, UFMT, Sinop-MT; MARCELO OSTER REZENDE, UFMT, Sinop-MT; CIRO AUGUSTO DE SOUZA MAGALHAES, CPAMT; LUCIANO BASTOS LOPES, CPAMT. |
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Título: |
Parameters associated with sexual precocity of Nellore heifers in integrated systems. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Agroforestry Systems, v. 96, n. 4, p. 669-679, 2022. |
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DOI: |
https://doi.org/10.1007/s10457-021-00702-x |
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Idioma: |
Inglês |
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Conteúdo: |
This study evaluated how integrated crop?livestock?forestry systems affected the expression of sexual traits in Nellore heifers. The serum concentration of insulin-like growth factor type-I (IGF-I), follicular diameter, rump fat thickness (RFT), and weight gain were assessed in 48 prepubertal Nellore heifers (14?16 months old, initial average live weight of 270 ± 36 kg). Calf birth weight was assessed after parturition. Heifers were distributed into four production systems following a completely randomized block design, with 12 animals in each treatment: open pasture (OP); two silvopastoral systems (SPSs?single rows or SPSt?triple rows), and crop-livestock system (CL). Thermal comfort was evaluated using the black globe, as well as humidity index (BGHI) and radiant thermal load (RTL). Animals in all treatments were exposed for long periods to heat stress; however, thermal indexes got lesser values in the SPS treatments. Heifers from the SPSt achieved the greatest serum concentration of IGF-I, but the follicular diameter did not differ among systems, as initially expected. The greatest weight gain and RFT standards were found in heifers of the CL system. Calves born from females of exclusive livestock (OP) showed the smallest weight at birth. Therefore, we suggested the adoption of the SPS and CL systems for livestock beef ranches as Nellore heifers reached better zootechnical and physiologic parameters associated with sexual precocity. |
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Palavras-Chave: |
Ilp; Integração lavoura-pecuária; Mato Grosso; Sinop-MT; Sistemas integrados. |
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Thesagro: |
Agrossilvicultura; Comportamento Sexual; Gado Nelore. |
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Thesaurus NAL: |
Animal growth; Cattle; Heat stress; Livestock; Nellore; Nutrition; Puberty. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
null
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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