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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
26/10/2012 |
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Data da última atualização: |
29/09/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
BERNARDI, A. C. de C.; BETTIOL, G. M.; OLIVEIRA, P. P. A.; CAMPANA, M.; RABELLO, L. M.; INAMASU, R. Y. |
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Afiliação: |
ALBERTO CARLOS DE CAMPOS BERNARDI, CPPSE; GIOVANA MARANHAO BETTIOL, CPPSE; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; MARIANA CAMPANA, UFSCar/SÃO CARLOS ,SP; LADISLAU MARCELINO RABELLO, CNPDIA; RICARDO YASSUSHI INAMASU, CNPDIA. |
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Título: |
Spatial Variability of soil properties in intensively managed tropical grassland in Brazil. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE, 11., 2012, Mineapolis. Proceedings... Indianapolis: International Society of Precision Agriculture, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
For the intensification of tropical grass pastures systems the soil fertility building up by liming and balanced fertilization is necessary. The knowledge of spatial variability soil properties is useful in the rational use of inputs, as in the variable rate application of lime and fertilizers. PA requires methods to indicate the spatial variability of soil and plant parameters. The objective of this work was to map and evaluate the soil properties and maps the site specific liming and fertilizer need in a irrigated tropical pasture. The study was conducted in an area of 8 ha of pasture Mombaça-grass (Panicum maximum) irrigated and intensive managed in a rotational system with 48 paddocks in Sao Carlos, SP, Brazil. Soil samples were collected at 0?0.2 m depth with 6 sub-samples in each paddock. The values of soil P, K, CEC and basis saturation were analyzed by traditional soil testing. Apparent soil electrical conductivity (ECa) was measured with contact sensor. Spatial variability soil properties and site specific liming and fertilizer need were modeled using semivariograms and maps were obtained by kriging with Vesper software. Crop variation at this spatial scale was not affected by topography and other soil chemical properties related. NDVI and ECa had the same tendency of dry matter estimation. Results showed that the soil properties of study area are very homogeneous, and variable rate of potassium fertilizer has the potential to be adopted in the study area. |
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Palavras-Chave: |
Opportunity index; Soil electrical conductivity; Spatial variability. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02245nam a2200205 a 4500
001 1938225
005 2023-09-29
008 2012 bl uuuu u00u1 u #d
100 1 $aBERNARDI, A. C. de C.
245 $aSpatial Variability of soil properties in intensively managed tropical grassland in Brazil.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE, 11., 2012, Mineapolis. Proceedings... Indianapolis: International Society of Precision Agriculture$c2012
520 $aFor the intensification of tropical grass pastures systems the soil fertility building up by liming and balanced fertilization is necessary. The knowledge of spatial variability soil properties is useful in the rational use of inputs, as in the variable rate application of lime and fertilizers. PA requires methods to indicate the spatial variability of soil and plant parameters. The objective of this work was to map and evaluate the soil properties and maps the site specific liming and fertilizer need in a irrigated tropical pasture. The study was conducted in an area of 8 ha of pasture Mombaça-grass (Panicum maximum) irrigated and intensive managed in a rotational system with 48 paddocks in Sao Carlos, SP, Brazil. Soil samples were collected at 0?0.2 m depth with 6 sub-samples in each paddock. The values of soil P, K, CEC and basis saturation were analyzed by traditional soil testing. Apparent soil electrical conductivity (ECa) was measured with contact sensor. Spatial variability soil properties and site specific liming and fertilizer need were modeled using semivariograms and maps were obtained by kriging with Vesper software. Crop variation at this spatial scale was not affected by topography and other soil chemical properties related. NDVI and ECa had the same tendency of dry matter estimation. Results showed that the soil properties of study area are very homogeneous, and variable rate of potassium fertilizer has the potential to be adopted in the study area.
653 $aOpportunity index
653 $aSoil electrical conductivity
653 $aSpatial variability
700 1 $aBETTIOL, G. M.
700 1 $aOLIVEIRA, P. P. A.
700 1 $aCAMPANA, M.
700 1 $aRABELLO, L. M.
700 1 $aINAMASU, R. Y.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
30/05/2019 |
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Data da última atualização: |
24/01/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
GERHARDT, I. F. S.; AMARAL JÚNIOR, A. T. do; PENA, G. F.; GUIMARAES, L. J. M.; LIMA, V. J. de; VIVAS, M.; SANTOS, P. H. A. D.; FERREIRA, F. R. A.; FREITAS, M. S. M.; KAMPHORST, S. H. |
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Afiliação: |
Ismael Fernando Schegoscheski Gerhardt, University of Guelph; Antonio Teixeira do Amaral Junior, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Guilherme Ferreira Pena, Universidade Estadual de Mato Grosso; LAURO JOSE MOREIRA GUIMARAES, CNPMS; Valter Jario de Lima, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Marcelo Vivas, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Pedro Henrique Araújo Diniz Santos, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Fernando Rafael Alves Ferreira, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Marta Simone Mendonça Freitas, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Samuel Henrique Kamphorst, Universidade Estadual do Norte Fluminense Darcy Ribeiro. |
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Título: |
Genetic effects on the efficiency and responsiveness to phosphorus use in popcorn as estimated by diallel analysis. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Plos ONE, v. 14, n. 5, e0216980, May 2019. |
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DOI: |
10.1371/journal.pone.0216980 |
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Idioma: |
Inglês |
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Conteúdo: |
Agricultural expansion and the need for sustainable cultivation are challenges faced by researchers involved in the generation of new cultivars that can adapt to abiotic stress. Knowledge of the genetic effects of characteristics related to efficiency and responsiveness to phosphorus use must be considered when implementing methods to obtain better genotypes. The aim of this study was to characterize and select popcorn hybrids based on their efficiency and responsiveness to phosphorus use, and estimate their combining abilities and genetic effects via diallel analysis to implement improvement programs for sustainable agriculture. Eight contrasting inbred lines were used to obtain simple hybrids for diallel analysis. Twenty-eight diallelic hybrids plus the popcorn parental lines were evaluated at two different sites under two contrasting environments for soil phosphorus availability (6×6 lattice design). Grain yield, popping expansion, and volume of expanded popcorn per hectare were measured. A combined analysis of variance and a test of means were performed. The classification and utilization of the phosphorus use efficiency index, according to the grain yield performance of the hybrids under contrasting environments, was considered. Through model 2 of the Griffing?s diallel analysis method, the general and specific combining abilities were estimated, along with their environmental interactions. The best strategy to obtain genotypes that are efficient and responsive to phosphorus involves exploring popcorn hybrids using genitors that result in the accumulation of additive genes that promote popping expansion. Hybrids P7×L80, P7×L59, P7×L76, and P6×L80 presented promising results and may be evaluated as cultivation options in phosphorus-deficient soils. MenosAgricultural expansion and the need for sustainable cultivation are challenges faced by researchers involved in the generation of new cultivars that can adapt to abiotic stress. Knowledge of the genetic effects of characteristics related to efficiency and responsiveness to phosphorus use must be considered when implementing methods to obtain better genotypes. The aim of this study was to characterize and select popcorn hybrids based on their efficiency and responsiveness to phosphorus use, and estimate their combining abilities and genetic effects via diallel analysis to implement improvement programs for sustainable agriculture. Eight contrasting inbred lines were used to obtain simple hybrids for diallel analysis. Twenty-eight diallelic hybrids plus the popcorn parental lines were evaluated at two different sites under two contrasting environments for soil phosphorus availability (6×6 lattice design). Grain yield, popping expansion, and volume of expanded popcorn per hectare were measured. A combined analysis of variance and a test of means were performed. The classification and utilization of the phosphorus use efficiency index, according to the grain yield performance of the hybrids under contrasting environments, was considered. Through model 2 of the Griffing?s diallel analysis method, the general and specific combining abilities were estimated, along with their environmental interactions. The best strategy to obtain genotypes that are efficient and responsive to phosp... Mostrar Tudo |
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Palavras-Chave: |
Análise dialélica. |
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Thesagro: |
Agricultura Sustentável; Fósforo; Melhoramento Genético Vegetal; Milho Pipoca. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/197941/1/Genetic-effects.pdf
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Marc: |
LEADER 02724naa a2200301 a 4500
001 2109459
005 2020-01-24
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1371/journal.pone.0216980$2DOI
100 1 $aGERHARDT, I. F. S.
245 $aGenetic effects on the efficiency and responsiveness to phosphorus use in popcorn as estimated by diallel analysis.$h[electronic resource]
260 $c2019
520 $aAgricultural expansion and the need for sustainable cultivation are challenges faced by researchers involved in the generation of new cultivars that can adapt to abiotic stress. Knowledge of the genetic effects of characteristics related to efficiency and responsiveness to phosphorus use must be considered when implementing methods to obtain better genotypes. The aim of this study was to characterize and select popcorn hybrids based on their efficiency and responsiveness to phosphorus use, and estimate their combining abilities and genetic effects via diallel analysis to implement improvement programs for sustainable agriculture. Eight contrasting inbred lines were used to obtain simple hybrids for diallel analysis. Twenty-eight diallelic hybrids plus the popcorn parental lines were evaluated at two different sites under two contrasting environments for soil phosphorus availability (6×6 lattice design). Grain yield, popping expansion, and volume of expanded popcorn per hectare were measured. A combined analysis of variance and a test of means were performed. The classification and utilization of the phosphorus use efficiency index, according to the grain yield performance of the hybrids under contrasting environments, was considered. Through model 2 of the Griffing?s diallel analysis method, the general and specific combining abilities were estimated, along with their environmental interactions. The best strategy to obtain genotypes that are efficient and responsive to phosphorus involves exploring popcorn hybrids using genitors that result in the accumulation of additive genes that promote popping expansion. Hybrids P7×L80, P7×L59, P7×L76, and P6×L80 presented promising results and may be evaluated as cultivation options in phosphorus-deficient soils.
650 $aAgricultura Sustentável
650 $aFósforo
650 $aMelhoramento Genético Vegetal
650 $aMilho Pipoca
653 $aAnálise dialélica
700 1 $aAMARAL JÚNIOR, A. T. do
700 1 $aPENA, G. F.
700 1 $aGUIMARAES, L. J. M.
700 1 $aLIMA, V. J. de
700 1 $aVIVAS, M.
700 1 $aSANTOS, P. H. A. D.
700 1 $aFERREIRA, F. R. A.
700 1 $aFREITAS, M. S. M.
700 1 $aKAMPHORST, S. H.
773 $tPlos ONE$gv. 14, n. 5, e0216980, May 2019.
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Embrapa Milho e Sorgo (CNPMS) |
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