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Registro Completo |
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Biblioteca(s): |
Embrapa Solos / UEP-Recife; Embrapa Unidades Centrais. |
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Data corrente: |
13/06/2014 |
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Data da última atualização: |
29/05/2017 |
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Autoria: |
CARVALHO, D. F. de; DURIGON, V. L.; ANTUNES, M. A. H.; ALMEIDA, W. S. de; OLIVEIRA, P. T. S. |
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Título: |
Predicting soil erosion using Rusle and NDVI time series from TM Landsat 5. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 49, n. 3, p. 215-224, mar. 2014. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Predição da erosão do solo com uso da Rusle e séries temporais de NDVI do Landsat 5 TM. |
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Conteúdo: |
The objective of this work was to evaluate the seasonal variation of soil cover and rainfall erosivity, and their influences on the revised universal soil loss equation (Rusle), in order to estimate watershed soil losses in a temporal scale. Twenty‑two TM Landsat 5 images from 1986 to 2009 were used to estimate soil use and management factor (C factor). A corresponding rainfall erosivity factor (R factor) was considered for each image, and the other factors were obtained using the standard Rusle method. Estimated soil losses were grouped into classes and ranged from 0.13 Mg ha‑1 on May 24, 2009 (dry season) to 62.0 Mg ha‑1 on March 11, 2007 (rainy season). In these dates, maximum losses in the watershed were 2.2 and 781.5 Mg ha‑1, respectively. Mean annual soil loss in the watershed was 109.5 Mg ha‑1, but the central area, with a loss of nearly 300.0 Mg ha‑1, was characterized as a site of high water‑erosion risk. The use of C factor obtained from remote sensing data, associated to corresponding R factor, was fundamental to evaluate the soil erosion estimated by the Rusle in different seasons, unlike of other studies which keep these factors constant throughout time |
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Palavras-Chave: |
C factor; Erosividade; Fator C; Índice de vegetação; Perda de solo; Rainfall erosivity; Soil loss. |
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Thesagro: |
Sensoriamento remoto. |
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Thesaurus Nal: |
Remote sensing; vegetation index. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/103653/1/Predicting-soil-erosion-using.pdf
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Marc: |
LEADER 02189naa a2200301 a 4500
001 1988368
005 2017-05-29
008 2014 bl uuuu u00u1 u #d
100 1 $aCARVALHO, D. F. de
245 $aPredicting soil erosion using Rusle and NDVI time series from TM Landsat 5.
260 $c2014
500 $aTítulo em português: Predição da erosão do solo com uso da Rusle e séries temporais de NDVI do Landsat 5 TM.
520 $aThe objective of this work was to evaluate the seasonal variation of soil cover and rainfall erosivity, and their influences on the revised universal soil loss equation (Rusle), in order to estimate watershed soil losses in a temporal scale. Twenty‑two TM Landsat 5 images from 1986 to 2009 were used to estimate soil use and management factor (C factor). A corresponding rainfall erosivity factor (R factor) was considered for each image, and the other factors were obtained using the standard Rusle method. Estimated soil losses were grouped into classes and ranged from 0.13 Mg ha‑1 on May 24, 2009 (dry season) to 62.0 Mg ha‑1 on March 11, 2007 (rainy season). In these dates, maximum losses in the watershed were 2.2 and 781.5 Mg ha‑1, respectively. Mean annual soil loss in the watershed was 109.5 Mg ha‑1, but the central area, with a loss of nearly 300.0 Mg ha‑1, was characterized as a site of high water‑erosion risk. The use of C factor obtained from remote sensing data, associated to corresponding R factor, was fundamental to evaluate the soil erosion estimated by the Rusle in different seasons, unlike of other studies which keep these factors constant throughout time
650 $aRemote sensing
650 $avegetation index
650 $aSensoriamento remoto
653 $aC factor
653 $aErosividade
653 $aFator C
653 $aÍndice de vegetação
653 $aPerda de solo
653 $aRainfall erosivity
653 $aSoil loss
700 1 $aDURIGON, V. L.
700 1 $aANTUNES, M. A. H.
700 1 $aALMEIDA, W. S. de
700 1 $aOLIVEIRA, P. T. S.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 49, n. 3, p. 215-224, mar. 2014.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Biblioteca |
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Tipo/Formato |
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Voltar
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
12/12/2000 |
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Data da última atualização: |
27/11/2007 |
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Autoria: |
MOSCARDI, F.; CORREA-FERREIRA, B.S.; SOSA-GOMEZ, D.R. |
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Título: |
Role of natural enemies in developing IPM strategies. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONGRESS OF ENTOMOLOGY, 21., 2000, Foz do Iguassu. Abstracts... Londrina: Embrapa Soja, 2000. |
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Volume: |
v.2 |
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Páginas: |
p.649. |
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Idioma: |
Inglês |
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Conteúdo: |
The role of natural enemies in IPM programs is unquestionable, but the sucess of their employment will with the characteristics of each biological agent group (predator, parasitoid and entomopathogen) and even the characteristics of subgroups and species within these groups, in relation to the pest crop enviroment involved. The strategies adopted for use of natural enemies in a soybean IPM program in Brazil will be used as a case study in this presentation. This program was implemented in the mid 1970's, and was based primarily on action thresholds for key soybean pests (the velvetbean caterpillar, Anticarsia gemmatalis, as a defoliator, and a complex of pod and seed sucking stink buy species (mainly Nezara viridula, Piezodorus guildinii, and Euschistus heros), and application of selected insecticides when action thresholds were reached. These initial actions brought down the number of insecticide applications on the crop, in specific regions in Brazil, from an average of ca. 6 to ca. 2 applications per season, in a period of four years. In the late 1970's, a program was initiated at Embrapa (Brazilian Organization for Agricultural Research) for the use of a Nucleopolyhedrovirus of A. gemmatalis (AgNPV) to control the insect at grower level. In the early 1990's five private companies started production and commercislization of this bioinsecticide, with quality control being made at Embrapa. Use of the AgNPV started in 1983 in ca.2,000 ha, and increased drastically in subsequent years, reaching 1,000,000 ha/year of soybean in 1990. Nowdays, is has been used annually in ca. 1,400,000 ha (ca. 10% of the soybean cultivated area in Brazil). In the major soybean producing state (Parana) the AgNPV is the major insecticide used against A. gemmatalis, corresponding to ca.27% of the insecticide applications against this pest. The success of AgNPV use is due to its virulence, ability of horizontal transmission and recycling and to persist in the environment of the host, as well as the high tolerance of soybean to defoliation, among other factors. In 1991, a biological control program was developed aginst stink bugs, through the laboratory rearing of the egg parasitoid Trissolcus basalis and release in soybean fields. This program was implemented in 1994 by use in continuos areas of micro river basins with the participation of governamental, industrial and academic partners. Nowdays, this system is being implemented in five counties of Parana State, involving 343 producers, resulting in drastic reduction of chemical insecticides use and change to less toxic insecticides. MenosThe role of natural enemies in IPM programs is unquestionable, but the sucess of their employment will with the characteristics of each biological agent group (predator, parasitoid and entomopathogen) and even the characteristics of subgroups and species within these groups, in relation to the pest crop enviroment involved. The strategies adopted for use of natural enemies in a soybean IPM program in Brazil will be used as a case study in this presentation. This program was implemented in the mid 1970's, and was based primarily on action thresholds for key soybean pests (the velvetbean caterpillar, Anticarsia gemmatalis, as a defoliator, and a complex of pod and seed sucking stink buy species (mainly Nezara viridula, Piezodorus guildinii, and Euschistus heros), and application of selected insecticides when action thresholds were reached. These initial actions brought down the number of insecticide applications on the crop, in specific regions in Brazil, from an average of ca. 6 to ca. 2 applications per season, in a period of four years. In the late 1970's, a program was initiated at Embrapa (Brazilian Organization for Agricultural Research) for the use of a Nucleopolyhedrovirus of A. gemmatalis (AgNPV) to control the insect at grower level. In the early 1990's five private companies started production and commercislization of this bioinsecticide, with quality control being made at Embrapa. Use of the AgNPV started in 1983 in ca.2,000 ha, and increased drastically in subsequ... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Inset praga; Manejo integrado; Microbial control agents. |
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Thesagro: |
Epidemiologia; Inimigo Natural. |
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Thesaurus NAL: |
Brazil; epidemiology; Insecta; integrated pest management; natural enemies. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03448naa a2200301 a 4500
001 1462591
005 2007-11-27
008 2000 bl uuuu u00u1 u #d
100 1 $aMOSCARDI, F.
245 $aRole of natural enemies in developing IPM strategies.
260 $c2000
300 $ap.649. v.2
490 $vv.2
520 $aThe role of natural enemies in IPM programs is unquestionable, but the sucess of their employment will with the characteristics of each biological agent group (predator, parasitoid and entomopathogen) and even the characteristics of subgroups and species within these groups, in relation to the pest crop enviroment involved. The strategies adopted for use of natural enemies in a soybean IPM program in Brazil will be used as a case study in this presentation. This program was implemented in the mid 1970's, and was based primarily on action thresholds for key soybean pests (the velvetbean caterpillar, Anticarsia gemmatalis, as a defoliator, and a complex of pod and seed sucking stink buy species (mainly Nezara viridula, Piezodorus guildinii, and Euschistus heros), and application of selected insecticides when action thresholds were reached. These initial actions brought down the number of insecticide applications on the crop, in specific regions in Brazil, from an average of ca. 6 to ca. 2 applications per season, in a period of four years. In the late 1970's, a program was initiated at Embrapa (Brazilian Organization for Agricultural Research) for the use of a Nucleopolyhedrovirus of A. gemmatalis (AgNPV) to control the insect at grower level. In the early 1990's five private companies started production and commercislization of this bioinsecticide, with quality control being made at Embrapa. Use of the AgNPV started in 1983 in ca.2,000 ha, and increased drastically in subsequent years, reaching 1,000,000 ha/year of soybean in 1990. Nowdays, is has been used annually in ca. 1,400,000 ha (ca. 10% of the soybean cultivated area in Brazil). In the major soybean producing state (Parana) the AgNPV is the major insecticide used against A. gemmatalis, corresponding to ca.27% of the insecticide applications against this pest. The success of AgNPV use is due to its virulence, ability of horizontal transmission and recycling and to persist in the environment of the host, as well as the high tolerance of soybean to defoliation, among other factors. In 1991, a biological control program was developed aginst stink bugs, through the laboratory rearing of the egg parasitoid Trissolcus basalis and release in soybean fields. This program was implemented in 1994 by use in continuos areas of micro river basins with the participation of governamental, industrial and academic partners. Nowdays, this system is being implemented in five counties of Parana State, involving 343 producers, resulting in drastic reduction of chemical insecticides use and change to less toxic insecticides.
650 $aBrazil
650 $aepidemiology
650 $aInsecta
650 $aintegrated pest management
650 $anatural enemies
650 $aEpidemiologia
650 $aInimigo Natural
653 $aBrasil
653 $aInset praga
653 $aManejo integrado
653 $aMicrobial control agents
700 1 $aCORREA-FERREIRA, B.S.
700 1 $aSOSA-GOMEZ, D.R.
773 $tIn: INTERNATIONAL CONGRESS OF ENTOMOLOGY, 21., 2000, Foz do Iguassu. Abstracts... Londrina: Embrapa Soja, 2000.
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