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Registro Completo |
Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
22/05/1998 |
Data da última atualização: |
22/05/1998 |
Autoria: |
AVILA, A. C. de; POZZER, L.; BEZERRA, I.; KORMELINK, R.; PRINS, M.; PETERS, D.; NAGATA, T.; KITAJIMA, E. W.; RESENDE, R. de O. |
Afiliação: |
EMBRAPA-CNPH, Brasilia, DF. |
Título: |
Diversity of tospoviruses in Brazil. |
Ano de publicação: |
1998 |
Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON TOSPOVIRUSES AND THRIPS IN FLORAL AND VEGETABLE CROPS, 4., 1998, Wageningen, NL. Recent progress in tospovirus and thrips research: abstracts of papers and poster presentations. Wageningen: Experimental Plant Sciences / Production Ecology, 1998. |
Páginas: |
p.32-34. |
Idioma: |
Inglês |
Palavras-Chave: |
Brasil; CSNV; Diversidade; Diversity; GBNV; GRSV; INSV; IYSVbr; IYSVnl; TCSV; Tospoviruses; TSWV; WSMV; ZLCV. |
Thesagro: |
Vírus. |
Thesaurus Nal: |
Brazil; Tospovirus. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01170naa a2200421 a 4500 001 1761865 005 1998-05-22 008 1998 bl --- 0-- u #d 100 1 $aAVILA, A. C. de 245 $aDiversity of tospoviruses in Brazil. 260 $c1998 300 $ap.32-34. 650 $aBrazil 650 $aTospovirus 650 $aVírus 653 $aBrasil 653 $aCSNV 653 $aDiversidade 653 $aDiversity 653 $aGBNV 653 $aGRSV 653 $aINSV 653 $aIYSVbr 653 $aIYSVnl 653 $aTCSV 653 $aTospoviruses 653 $aTSWV 653 $aWSMV 653 $aZLCV 700 1 $aPOZZER, L. 700 1 $aBEZERRA, I. 700 1 $aKORMELINK, R. 700 1 $aPRINS, M. 700 1 $aPETERS, D. 700 1 $aNAGATA, T. 700 1 $aKITAJIMA, E. W. 700 1 $aRESENDE, R. de O. 773 $tIn: INTERNATIONAL SYMPOSIUM ON TOSPOVIRUSES AND THRIPS IN FLORAL AND VEGETABLE CROPS, 4., 1998, Wageningen, NL. Recent progress in tospovirus and thrips research: abstracts of papers and poster presentations. Wageningen: Experimental Plant Sciences / Production Ecology, 1998.
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Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
11/02/2015 |
Data da última atualização: |
11/02/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
PERRIN, A.-S.; FUJISAKI, K.; PETITJEAN, C.; SARRAZIN, M.; GODET, M.; GARRIC, B.; HORTH, J.-C.; BALBINO, L. C.; SILVEIRA FILHO, A.; MACHADO, P. L. O. de A.; BROSSARD, M. |
Afiliação: |
ANNE-SOPHIE PERRIN, CETIOM; KENJI FUJISAKI, CETIOM; CAROLINE PETITJEAN, UNIVERSITÉ DES ANTILLES ET DE LA GUYANE; MAX SARRAZIN, IRD; MATHIEU GODET, CETIOM; BERNARD GARRIC, CETIOM; JEAN-CLAUDE HORTH, CETIOM; LUIZ CARLOS BALBINO, CPAC; AUSTRELINO SILVEIRA FILHO, CPATU; PEDRO LUIZ OLIVEIRA DE A MACHADO, CNPAF; MICHEL BROSSARD, IRD. |
Título: |
Conversion of forest to agriculture in Amazonia with the chop-and-mulch method: Does it improve the soil carbon stock? |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Agriculture, Ecosystems & Environment, Amsterdam, v. 184, p. 101-114, Feb. 2014. |
DOI: |
10.1016/j.agee.2013.11.009 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Fire-free forest conversion with organic inputs as an alternative to slash-and-burn could improve agro-ecosystem sustainability. We assessed soil carbon mass changes in a sandy-clayey and well-drained soil in French Guiana after forest clearing by the chop-and-mulch method and crop establishment. At the experimental site of Combi, native forest was cut down in October 2008; woody biomass was chopped and incorporated into the top 20 cm of soil. After about one year of legume and grass cover, three forms of land management were compared: grassland (Urochloa ruziziensis), maize/soybean crop rotation with disk tillage and in direct seeding without tillage. There were four replicates. We measured 14.16 kg m-2 of carbon in 2 mm-sieved soil down to 2 m depth for the initial forest. Forest clearing did not induce significant soil compaction; neither did any specific agricultural practice. In converted soils, C stocks were measured in the 0-30 cm layer after each crop for three years. Carbon mass changes for soil fractions <2 mm (soil C stock) and >2 mm (soil C pool) in the 0-5, 5-10, 10-20 and 20-30 cm soil layers were assessed on an equivalent soil mass basis. One year and 1.5 years after deforestation, higher C stocks (+0.64 to 1.16 kg C m-2 yr-1) and C pools (+0.52 to 0.90 kg C m-2 yr-1) were measured in converted soils, compared to those of the forest into the top 30 cm of soil. However, the masses of carbon in these converted soils declined later. The highest rates of carbon decrease were measured between 1.5 and 2 years after forest conversion in the <2 mm soil fraction, from 0.46 kg C m-2 yr-1 (in grassland soils) to 0.71 kg C m-2 yr-1 (in cropland under no tillage). The carbon pool declined during the third year at rates of 0.41 kg C m-2 yr-1 (cropland under disk tillage) to 0.76 kg C m-2 yr-1 (grassland soils). Three years after forest conversion, C masses in the top 30 cm of soils for grassland showed similar values than for forest. In comparison, the carbon stock in cropped soils managed under no tillage in direct seeding (without mulch) was significantly 17% and 16% lower than in forest and grassland soils, respectively. None of the studied agricultural practices succeeded in accumulating carbon from the chopped forest biomass. MenosAbstract: Fire-free forest conversion with organic inputs as an alternative to slash-and-burn could improve agro-ecosystem sustainability. We assessed soil carbon mass changes in a sandy-clayey and well-drained soil in French Guiana after forest clearing by the chop-and-mulch method and crop establishment. At the experimental site of Combi, native forest was cut down in October 2008; woody biomass was chopped and incorporated into the top 20 cm of soil. After about one year of legume and grass cover, three forms of land management were compared: grassland (Urochloa ruziziensis), maize/soybean crop rotation with disk tillage and in direct seeding without tillage. There were four replicates. We measured 14.16 kg m-2 of carbon in 2 mm-sieved soil down to 2 m depth for the initial forest. Forest clearing did not induce significant soil compaction; neither did any specific agricultural practice. In converted soils, C stocks were measured in the 0-30 cm layer after each crop for three years. Carbon mass changes for soil fractions <2 mm (soil C stock) and >2 mm (soil C pool) in the 0-5, 5-10, 10-20 and 20-30 cm soil layers were assessed on an equivalent soil mass basis. One year and 1.5 years after deforestation, higher C stocks (+0.64 to 1.16 kg C m-2 yr-1) and C pools (+0.52 to 0.90 kg C m-2 yr-1) were measured in converted soils, compared to those of the forest into the top 30 cm of soil. However, the masses of carbon in these converted soils declined later. The highest rates of... Mostrar Tudo |
Palavras-Chave: |
Guiana Francesa; Sem queima. |
Thesagro: |
Brachiaria; Carbono; Desmatamento; Plantio direto; Solo. |
Thesaurus NAL: |
Amazonia. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 03278naa a2200349 a 4500 001 2008506 005 2015-02-11 008 2014 bl --- 0-- u #d 024 7 $a10.1016/j.agee.2013.11.009$2DOI 100 1 $aPERRIN, A.-S. 245 $aConversion of forest to agriculture in Amazonia with the chop-and-mulch method$bDoes it improve the soil carbon stock? 260 $c2014 520 $aAbstract: Fire-free forest conversion with organic inputs as an alternative to slash-and-burn could improve agro-ecosystem sustainability. We assessed soil carbon mass changes in a sandy-clayey and well-drained soil in French Guiana after forest clearing by the chop-and-mulch method and crop establishment. At the experimental site of Combi, native forest was cut down in October 2008; woody biomass was chopped and incorporated into the top 20 cm of soil. After about one year of legume and grass cover, three forms of land management were compared: grassland (Urochloa ruziziensis), maize/soybean crop rotation with disk tillage and in direct seeding without tillage. There were four replicates. We measured 14.16 kg m-2 of carbon in 2 mm-sieved soil down to 2 m depth for the initial forest. Forest clearing did not induce significant soil compaction; neither did any specific agricultural practice. In converted soils, C stocks were measured in the 0-30 cm layer after each crop for three years. Carbon mass changes for soil fractions <2 mm (soil C stock) and >2 mm (soil C pool) in the 0-5, 5-10, 10-20 and 20-30 cm soil layers were assessed on an equivalent soil mass basis. One year and 1.5 years after deforestation, higher C stocks (+0.64 to 1.16 kg C m-2 yr-1) and C pools (+0.52 to 0.90 kg C m-2 yr-1) were measured in converted soils, compared to those of the forest into the top 30 cm of soil. However, the masses of carbon in these converted soils declined later. The highest rates of carbon decrease were measured between 1.5 and 2 years after forest conversion in the <2 mm soil fraction, from 0.46 kg C m-2 yr-1 (in grassland soils) to 0.71 kg C m-2 yr-1 (in cropland under no tillage). The carbon pool declined during the third year at rates of 0.41 kg C m-2 yr-1 (cropland under disk tillage) to 0.76 kg C m-2 yr-1 (grassland soils). Three years after forest conversion, C masses in the top 30 cm of soils for grassland showed similar values than for forest. In comparison, the carbon stock in cropped soils managed under no tillage in direct seeding (without mulch) was significantly 17% and 16% lower than in forest and grassland soils, respectively. None of the studied agricultural practices succeeded in accumulating carbon from the chopped forest biomass. 650 $aAmazonia 650 $aBrachiaria 650 $aCarbono 650 $aDesmatamento 650 $aPlantio direto 650 $aSolo 653 $aGuiana Francesa 653 $aSem queima 700 1 $aFUJISAKI, K. 700 1 $aPETITJEAN, C. 700 1 $aSARRAZIN, M. 700 1 $aGODET, M. 700 1 $aGARRIC, B. 700 1 $aHORTH, J.-C. 700 1 $aBALBINO, L. C. 700 1 $aSILVEIRA FILHO, A. 700 1 $aMACHADO, P. L. O. de A. 700 1 $aBROSSARD, M. 773 $tAgriculture, Ecosystems & Environment, Amsterdam$gv. 184, p. 101-114, Feb. 2014.
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