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Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
25/08/2006 |
Data da última atualização: |
25/08/2006 |
Autoria: |
SANTOS, G. R. & CAFÉ FILHO, A. C. |
Título: |
Ocorrência do crescimento gomoso do caule em melancia no Tocantins causado por Didymella bryoniae. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
Fitopatologia Brasileira,Brasília, DF, v.31, nº2, p.208, 2006. |
Páginas: |
208 |
Idioma: |
Português |
Conteúdo: |
A principal doença é o crestamento gomoso do caule devido a sua alta incidência, associada a grandes prejuízos Em julho de 2003, no projeto Formoso, TO, plantas de melancia cv. Crimson Sweet mostrando sintomas de cranco no caule e crestamento nas folhas foram coletadas para análise no laboratório de Fitopatologia da Universidade de Brasília. |
Palavras-Chave: |
Gomoso. |
Thesagro: |
Caule; Citrullus Lanatus; Melancia. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00882naa a2200181 a 4500 001 1707569 005 2006-08-25 008 2006 bl uuuu u00u1 u #d 100 1 $aSANTOS, G. R. & CAFÉ FILHO, A. C. 245 $aOcorrência do crescimento gomoso do caule em melancia no Tocantins causado por Didymella bryoniae. 260 $c2006 300 $a208 520 $aA principal doença é o crestamento gomoso do caule devido a sua alta incidência, associada a grandes prejuízos Em julho de 2003, no projeto Formoso, TO, plantas de melancia cv. Crimson Sweet mostrando sintomas de cranco no caule e crestamento nas folhas foram coletadas para análise no laboratório de Fitopatologia da Universidade de Brasília. 650 $aCaule 650 $aCitrullus Lanatus 650 $aMelancia 653 $aGomoso 773 $tFitopatologia Brasileira,Brasília, DF$gv.31, nº2, p.208, 2006.
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
18/04/2002 |
Data da última atualização: |
18/04/2002 |
Autoria: |
SANO, E. E.; HUETE, A. R.; TROUFLEAU, D.; MORAN, M. S.; VIDAL, A. |
Título: |
Analysis of ERS-1 SAR data to study soil moisture content in rocky soils. |
Ano de publicação: |
1996 |
Fonte/Imprenta: |
In: INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, 1996, Lincoln, NB. Remote sensing for a sustainable future. [S.l.: IEEE], 1996. |
Páginas: |
p. 157-159. |
Idioma: |
Inglês |
Notas: |
IGARSS'96. |
Conteúdo: |
The objective of this research was to analyze the potential of ERS-1 SAR data to study the surface soil moisture content of rocky soils in semi-arid regions. The study took place at the Walnut Gulch Experimental Watershed, Tombstone, AZ. Field soil moisture contents and dry bulk densities in the top 5 cm were obtained from 51 different sampling sites in the watershed during a satellite overpass on July 25,1994. One set of 22 points was characterized by a sandy soil, 3-15% slope, and vegetation dominatedby shrubs. Another set of 29 sampling sites was characterized by a clayey soil, 0-3% slope, and covered by grasses and forbes. Soil roughness was measured at eight of these sites. The SAR image was georeferenced in the Universal Transverse Mercator (UTM) coordinate system and calibrated using a digital elevation model (DEM). In general, the correlation between volumetric soil moisture content and the radar backscatter signal was poor, but improved (r= 0.78 and 0.41 for the first and second sets, respectively) when limited to low correlation was due to the dominant influence of soil roughness which was directly related to the proportion and size of rock fragments. Although roughness seems to explain much of the variance from the radar backscatter signal, it was not clear how best to parameterize the roughness properties. Continued research includes modeling and separating moisture and rouhgness influences. |
Palavras-Chave: |
Regiao semi arida. |
Thesagro: |
Radar; Sensoriamento Remoto; Umidade do Solo. |
Thesaurus NAL: |
remote sensing; semiarid zones; soil water content. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02250naa a2200277 a 4500 001 1564698 005 2002-04-18 008 1996 bl uuuu u00u1 u #d 100 1 $aSANO, E. E. 245 $aAnalysis of ERS-1 SAR data to study soil moisture content in rocky soils. 260 $c1996 300 $ap. 157-159. 500 $aIGARSS'96. 520 $aThe objective of this research was to analyze the potential of ERS-1 SAR data to study the surface soil moisture content of rocky soils in semi-arid regions. The study took place at the Walnut Gulch Experimental Watershed, Tombstone, AZ. Field soil moisture contents and dry bulk densities in the top 5 cm were obtained from 51 different sampling sites in the watershed during a satellite overpass on July 25,1994. One set of 22 points was characterized by a sandy soil, 3-15% slope, and vegetation dominatedby shrubs. Another set of 29 sampling sites was characterized by a clayey soil, 0-3% slope, and covered by grasses and forbes. Soil roughness was measured at eight of these sites. The SAR image was georeferenced in the Universal Transverse Mercator (UTM) coordinate system and calibrated using a digital elevation model (DEM). In general, the correlation between volumetric soil moisture content and the radar backscatter signal was poor, but improved (r= 0.78 and 0.41 for the first and second sets, respectively) when limited to low correlation was due to the dominant influence of soil roughness which was directly related to the proportion and size of rock fragments. Although roughness seems to explain much of the variance from the radar backscatter signal, it was not clear how best to parameterize the roughness properties. Continued research includes modeling and separating moisture and rouhgness influences. 650 $aremote sensing 650 $asemiarid zones 650 $asoil water content 650 $aRadar 650 $aSensoriamento Remoto 650 $aUmidade do Solo 653 $aRegiao semi arida 700 1 $aHUETE, A. R. 700 1 $aTROUFLEAU, D. 700 1 $aMORAN, M. S. 700 1 $aVIDAL, A. 773 $tIn: INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, 1996, Lincoln, NB. Remote sensing for a sustainable future. [S.l.: IEEE], 1996.
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