| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Milho e Sorgo. |
|
Data corrente: |
13/01/2010 |
|
Data da última atualização: |
04/06/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
HURTADO, S. M. C.; SILVA, C. A.; RESENDE, A. V. de; PINHO, R. G. von; INÁCIO, E. dos S. B.; HIGASHIKAWA, F. S. |
|
Afiliação: |
Sandro Manuel Carmelino Hurtado, UFLA; Carlos Alberto Silva, UFLA; ALVARO VILELA DE RESENDE, CNPMS; Renzo Garcia von Pinho, UFLA; Euzelina dos Santos Borges Inácio, UFLA; Fábio Satoshi Higashikawa, UFLA. |
|
Título: |
Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn. |
|
Ano de publicação: |
2009 |
|
Fonte/Imprenta: |
Ciência e Agrotecnologia, Lavras, v. 33, n. 5, p. 1351-1359, set./out. 2009. |
|
DOI: |
10.1590/S1413-70542009000500022 |
|
Idioma: |
Inglês |
|
Conteúdo: |
In Brazil, technicians, in most cases, ignore the aspects related to the spatial variability of the soil acidity attributes when liming requirement is calculated. The objective of this study was to validate the liming practice, evaluating the presence of spatial variability of the soil acidity attributes and the existence of areas with differentiated liming requirement, which were calculated by different methods. The experiment was carried out in an area cultivated with corn under conventional management and irrigation. The soil (0-0.2 m) was sampled in a conventional way (composite soil sample) and in a systematic scheme, by use of a grid sampling. In sequence to the soil fertility attributes analysis, it was calculated the liming requirement, according to the methods of SMP pH, aluminum neutralization and elevation of soil Ca and Mg levels, and increase of the soil base saturation. After the descriptive analysis of the data set was accomplished, the semivariograms were calculated and the maps were obtained through the kriging technique. Absence of spatial dependence, as well as the non necessity of limestone application, was observed for the Al neutralization calculation method. Spatial dependence was only verified for the soil acidity attributes and to the liming requirement calculated by the base saturation and SMP pH methods; for these two methods, the semivariogram ranges obtained varied from 35.7 to 200.5 m. The results have highlighted the existence of differentiated liming requirement zones when the variability of the soil acidity attributes was considered in the calculation of the dose and type of limestone to be used for corn soil acidity correction MenosIn Brazil, technicians, in most cases, ignore the aspects related to the spatial variability of the soil acidity attributes when liming requirement is calculated. The objective of this study was to validate the liming practice, evaluating the presence of spatial variability of the soil acidity attributes and the existence of areas with differentiated liming requirement, which were calculated by different methods. The experiment was carried out in an area cultivated with corn under conventional management and irrigation. The soil (0-0.2 m) was sampled in a conventional way (composite soil sample) and in a systematic scheme, by use of a grid sampling. In sequence to the soil fertility attributes analysis, it was calculated the liming requirement, according to the methods of SMP pH, aluminum neutralization and elevation of soil Ca and Mg levels, and increase of the soil base saturation. After the descriptive analysis of the data set was accomplished, the semivariograms were calculated and the maps were obtained through the kriging technique. Absence of spatial dependence, as well as the non necessity of limestone application, was observed for the Al neutralization calculation method. Spatial dependence was only verified for the soil acidity attributes and to the liming requirement calculated by the base saturation and SMP pH methods; for these two methods, the semivariogram ranges obtained varied from 35.7 to 200.5 m. The results have highlighted the existence of differentiated... Mostrar Tudo |
|
Palavras-Chave: |
Geoestatística. |
|
Thesagro: |
Agricultura de Precisão; Milho; Zea mays. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/31794/1/Spatial-variability.pdf
|
|
Marc: |
LEADER 02459naa a2200241 a 4500
001 1580244
005 2018-06-04
008 2009 bl uuuu u00u1 u #d
024 7 $a10.1590/S1413-70542009000500022$2DOI
100 1 $aHURTADO, S. M. C.
245 $aSpatial variability of soil acidity attributes and the spatialization of liming requirement for corn.$h[electronic resource]
260 $c2009
520 $aIn Brazil, technicians, in most cases, ignore the aspects related to the spatial variability of the soil acidity attributes when liming requirement is calculated. The objective of this study was to validate the liming practice, evaluating the presence of spatial variability of the soil acidity attributes and the existence of areas with differentiated liming requirement, which were calculated by different methods. The experiment was carried out in an area cultivated with corn under conventional management and irrigation. The soil (0-0.2 m) was sampled in a conventional way (composite soil sample) and in a systematic scheme, by use of a grid sampling. In sequence to the soil fertility attributes analysis, it was calculated the liming requirement, according to the methods of SMP pH, aluminum neutralization and elevation of soil Ca and Mg levels, and increase of the soil base saturation. After the descriptive analysis of the data set was accomplished, the semivariograms were calculated and the maps were obtained through the kriging technique. Absence of spatial dependence, as well as the non necessity of limestone application, was observed for the Al neutralization calculation method. Spatial dependence was only verified for the soil acidity attributes and to the liming requirement calculated by the base saturation and SMP pH methods; for these two methods, the semivariogram ranges obtained varied from 35.7 to 200.5 m. The results have highlighted the existence of differentiated liming requirement zones when the variability of the soil acidity attributes was considered in the calculation of the dose and type of limestone to be used for corn soil acidity correction
650 $aAgricultura de Precisão
650 $aMilho
650 $aZea mays
653 $aGeoestatística
700 1 $aSILVA, C. A.
700 1 $aRESENDE, A. V. de
700 1 $aPINHO, R. G. von
700 1 $aINÁCIO, E. dos S. B.
700 1 $aHIGASHIKAWA, F. S.
773 $tCiência e Agrotecnologia, Lavras$gv. 33, n. 5, p. 1351-1359, set./out. 2009.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Meio Ambiente. |
|
Data corrente: |
01/04/1994 |
|
Data da última atualização: |
30/07/2021 |
|
Tipo da produção científica: |
Resumo em Anais de Congresso |
|
Autoria: |
ANDRADE, D. E. G. T.; SILVA, E. B.; MICHEREFF, S. J.; MARIANO, R. L. R.; BETTIOL, W. |
|
Afiliação: |
D.E.G.T. ANDRADE, UFRPE; E. B. SILVA, UFRPE; S.J. MICHEREFF, UFRPE; R. L. R., UFRPE; WAGNER BETTIOL, CNPMA. |
|
Título: |
Efeito de diferentes formulações de Bacillus subtilis sobre a queima das folhas do inhame. |
|
Ano de publicação: |
1993 |
|
Fonte/Imprenta: |
Fitopatologia Brasileira, v.18, p.307, ago. 1993. Suplemento. |
|
Idioma: |
Português |
|
Conteúdo: |
Visando o controle da queima das folhas do inhame causada por Curvularia eragrostidis, diferentes formulações de Bacillus subtilis (isolado AP-3) foram testadas, suspensão de células [10(8) ufc/ml]; células formuladas em pó molhavel [AM 66, 1500 ppm]; extrato sólido de metabólitos [GPL (T) 10, 5000 ppm] e extrato liquido de metabólitos [Subtin T, 5000 ppm]. O fungicida mancozeb (1600 ppm) foi utilizado como padrão de controle. As formulações e o fungicida foram aplicados em diferentes períodos com relação ao momento de inoculação do fitopatógeno (3 dias antes, no mesmo dia, 3 dias depois). Na media geral, a formulação extrato sólido demonstrou alta eficiência no controle da doença, embora sem diferir significativamente de mancozeb. Eficiência superior ao fungicida (81,25%) foi observada quando esta formulação foi aplicada 3 dias antes da inoculação de C. eragrostidis. Quando diferentes dosagens do extrato sólido (1, 10, 100, 1000, 5000 w 10000 ppm) foram testadas, os dois últimos níveis reduziram em mais de 75% a severidade da doença, sem entretanto diferirem significativamente entre si e de mancozeb. As dosagens de 5000 e 10000 ppm inibiram em 97% a germinação dos conidios do fitopatógeno, sendo superadas apenas por mancozeb que apresentou 100% de inibicao. |
|
Palavras-Chave: |
Queima das folhas. |
|
Thesagro: |
Controle Biológico; Controle Químico; Doença; Formulação; Fungo; Inhame. |
|
Thesaurus NAL: |
Bacillus subtilis; Curvularia eragrostidis. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/153084/1/1993AP016-Bettiol-Efeito-2299.PDF
|
|
Marc: |
LEADER 02105nam a2200265 a 4500
001 1011664
005 2021-07-30
008 1993 bl uuuu u00u1 u #d
100 1 $aANDRADE, D. E. G. T.
245 $aEfeito de diferentes formulações de Bacillus subtilis sobre a queima das folhas do inhame.$h[electronic resource]
260 $aFitopatologia Brasileira, v.18, p.307, ago. 1993. Suplemento.$c1993
520 $aVisando o controle da queima das folhas do inhame causada por Curvularia eragrostidis, diferentes formulações de Bacillus subtilis (isolado AP-3) foram testadas, suspensão de células [10(8) ufc/ml]; células formuladas em pó molhavel [AM 66, 1500 ppm]; extrato sólido de metabólitos [GPL (T) 10, 5000 ppm] e extrato liquido de metabólitos [Subtin T, 5000 ppm]. O fungicida mancozeb (1600 ppm) foi utilizado como padrão de controle. As formulações e o fungicida foram aplicados em diferentes períodos com relação ao momento de inoculação do fitopatógeno (3 dias antes, no mesmo dia, 3 dias depois). Na media geral, a formulação extrato sólido demonstrou alta eficiência no controle da doença, embora sem diferir significativamente de mancozeb. Eficiência superior ao fungicida (81,25%) foi observada quando esta formulação foi aplicada 3 dias antes da inoculação de C. eragrostidis. Quando diferentes dosagens do extrato sólido (1, 10, 100, 1000, 5000 w 10000 ppm) foram testadas, os dois últimos níveis reduziram em mais de 75% a severidade da doença, sem entretanto diferirem significativamente entre si e de mancozeb. As dosagens de 5000 e 10000 ppm inibiram em 97% a germinação dos conidios do fitopatógeno, sendo superadas apenas por mancozeb que apresentou 100% de inibicao.
650 $aBacillus subtilis
650 $aCurvularia eragrostidis
650 $aControle Biológico
650 $aControle Químico
650 $aDoença
650 $aFormulação
650 $aFungo
650 $aInhame
653 $aQueima das folhas
700 1 $aSILVA, E. B.
700 1 $aMICHEREFF, S. J.
700 1 $aMARIANO, R. L. R.
700 1 $aBETTIOL, W.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Ambiente (CNPMA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
