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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
03/12/2020 |
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Data da última atualização: |
04/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LEAL, O. A.; AMADO, T. J. C.; FIORIN, J. E.; KELLER, C.; REIMCHE, G. B.; RICE, C. W.; NICOLOSO, R. da S.; BORTOLOTTO, R. P.; SCHWALBERT, R. |
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Afiliação: |
OTÁVIO A. LEAL, UFSM; TELMO JORGE CARNEIRO AMADO, UFSC; JACKSON ERNANI FIORIN, Cooperativa Central Gaúcha Ltda; CRISTIANO KELLER, UFSM; GEOVANE REIMCHE, UFSM; CHARLES W. RICE, Kansas State University; RODRIGO DA SILVEIRA NICOLOSO, CNPSA; RAFAEL PIVOTTO BORTOLOTTO, Unicruz; RAÍ SCHWALBERT, UFSM. |
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Título: |
Linking cover crop residue quality and tillage system to CO2-C emission, soil C and N stocks and crop yield based on a long-term experiment. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Agronomy, v. 10, n. 1848, 2020. |
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DOI: |
10.3390/agronomy10121848. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Cover crops (CC), particularly legumes, are key to promote soil carbon (C) sequestration in no-tillage. Nevertheless, the mechanisms regulating this process need further elucidation within a broad comprehensive framework. Therefore, we investigated effects of CC quality: black oat (Avena strigosa Schreb) (oat), common vetch (Vicia sativa L.) (vetch), and oat + vetch on carbon dioxide-C (CO2-C) emission (124 days) under conventional- (CT), minimum- (MT) and no-tillage (NT) plots from a long-term experiment in Southern Brazil. Half-life time (t1/2) of CC residues and the apparent C balance (ACB) were obtained for CT and NT. We linked our data to long-term (22 years) soil C and nitrogen (N) stocks and crop yield data of our experimental field. Compared to CT, NT increased t1/2 of oat, oat + vetch and vetch by 3.9-, 3.1- and 3-fold, respectively; reduced CO2-C emissions in oat, oat + vetch and vetch by 500, 600 and 642 kg ha-1, respectively; and increased the ACB (influx) in oat + vetch (195%) and vetch (207%). For vetch, CO2-C emission in MT was 77% greater than NT. Legume CC should be preferentially combined with NT to reduce CO2-C emissions and avoid a flush of N into the soil. The legume based-NT system showed the greatest soil C and N sequestration rates, which were significantly and positively related to soybean (Glycine max (L.) Merrill) and maize (Zea mays L.) yield. Soil C (0?90 cm depth) and N (0?100 cm depth) sequestration increments of 1 kg ha-1 corresponded to soybean yield increments of 1.2 and 7.4 kg ha-1, respectively MenosAbstract: Cover crops (CC), particularly legumes, are key to promote soil carbon (C) sequestration in no-tillage. Nevertheless, the mechanisms regulating this process need further elucidation within a broad comprehensive framework. Therefore, we investigated effects of CC quality: black oat (Avena strigosa Schreb) (oat), common vetch (Vicia sativa L.) (vetch), and oat + vetch on carbon dioxide-C (CO2-C) emission (124 days) under conventional- (CT), minimum- (MT) and no-tillage (NT) plots from a long-term experiment in Southern Brazil. Half-life time (t1/2) of CC residues and the apparent C balance (ACB) were obtained for CT and NT. We linked our data to long-term (22 years) soil C and nitrogen (N) stocks and crop yield data of our experimental field. Compared to CT, NT increased t1/2 of oat, oat + vetch and vetch by 3.9-, 3.1- and 3-fold, respectively; reduced CO2-C emissions in oat, oat + vetch and vetch by 500, 600 and 642 kg ha-1, respectively; and increased the ACB (influx) in oat + vetch (195%) and vetch (207%). For vetch, CO2-C emission in MT was 77% greater than NT. Legume CC should be preferentially combined with NT to reduce CO2-C emissions and avoid a flush of N into the soil. The legume based-NT system showed the greatest soil C and N sequestration rates, which were significantly and positively related to soybean (Glycine max (L.) Merrill) and maize (Zea mays L.) yield. Soil C (0?90 cm depth) and N (0?100 cm depth) sequestration increments of 1 kg ha-1 corresponde... Mostrar Tudo |
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Palavras-Chave: |
Emissão de carbono. |
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Thesagro: |
Aveia; Cobertura do Solo; Cultivo Intensivo; Ervilhaca; Milho; Planta de Cobertura; Plantio Direto; Soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02538naa a2200337 a 4500
001 2127565
005 2020-12-04
008 2020 bl uuuu u00u1 u #d
024 7 $a10.3390/agronomy10121848.$2DOI
100 1 $aLEAL, O. A.
245 $aLinking cover crop residue quality and tillage system to CO2-C emission, soil C and N stocks and crop yield based on a long-term experiment.$h[electronic resource]
260 $c2020
520 $aAbstract: Cover crops (CC), particularly legumes, are key to promote soil carbon (C) sequestration in no-tillage. Nevertheless, the mechanisms regulating this process need further elucidation within a broad comprehensive framework. Therefore, we investigated effects of CC quality: black oat (Avena strigosa Schreb) (oat), common vetch (Vicia sativa L.) (vetch), and oat + vetch on carbon dioxide-C (CO2-C) emission (124 days) under conventional- (CT), minimum- (MT) and no-tillage (NT) plots from a long-term experiment in Southern Brazil. Half-life time (t1/2) of CC residues and the apparent C balance (ACB) were obtained for CT and NT. We linked our data to long-term (22 years) soil C and nitrogen (N) stocks and crop yield data of our experimental field. Compared to CT, NT increased t1/2 of oat, oat + vetch and vetch by 3.9-, 3.1- and 3-fold, respectively; reduced CO2-C emissions in oat, oat + vetch and vetch by 500, 600 and 642 kg ha-1, respectively; and increased the ACB (influx) in oat + vetch (195%) and vetch (207%). For vetch, CO2-C emission in MT was 77% greater than NT. Legume CC should be preferentially combined with NT to reduce CO2-C emissions and avoid a flush of N into the soil. The legume based-NT system showed the greatest soil C and N sequestration rates, which were significantly and positively related to soybean (Glycine max (L.) Merrill) and maize (Zea mays L.) yield. Soil C (0?90 cm depth) and N (0?100 cm depth) sequestration increments of 1 kg ha-1 corresponded to soybean yield increments of 1.2 and 7.4 kg ha-1, respectively
650 $aAveia
650 $aCobertura do Solo
650 $aCultivo Intensivo
650 $aErvilhaca
650 $aMilho
650 $aPlanta de Cobertura
650 $aPlantio Direto
650 $aSoja
653 $aEmissão de carbono
700 1 $aAMADO, T. J. C.
700 1 $aFIORIN, J. E.
700 1 $aKELLER, C.
700 1 $aREIMCHE, G. B.
700 1 $aRICE, C. W.
700 1 $aNICOLOSO, R. da S.
700 1 $aBORTOLOTTO, R. P.
700 1 $aSCHWALBERT, R.
773 $tAgronomy$gv. 10, n. 1848, 2020.
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Registro original: |
Embrapa Suínos e Aves (CNPSA) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
13/01/2023 |
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Data da última atualização: |
27/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 3 |
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Autoria: |
SANTOS, J. R. P. dos; MAIA, V. M.; SILVA, B. S. da; DEMICHELI, P. M.; ASPIAZÚ, I.; CONCENÇO, G. |
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Afiliação: |
JOÃO RAFAEL PRUDÊNCIO DOS SANTOS, UNIVERSIDADE ESTADUAL DE MONTES CLAROS; VICTOR MARTINS MAIA, UNIVERSIDADE ESTADUAL DE MONTES CLAROS; BRUNO SOARES DA SILVA, UNIVERSIDADE ESTADUAL DE MONTES CLAROS; PEDRO MENDES DEMICHELI, UNIVERSIDADE ESTADUAL DE MONTES CLAROS; IGNACIO ASPIAZÚ, UNIVERSIDADE ESTADUAL DE MONTES CLAROS; GERMANI CONCENCO, CPACT. |
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Título: |
Dynamics of the weed community during pineapple growth in the Brazilian semi-arid region. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Agronomía Colombiana, v. 40, n. 1, p. 109-119, 2022. |
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ISSN: |
0120-9965 |
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DOI: |
10.15446/agron.colomb.v40n1.94079 |
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Idioma: |
Inglês |
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Notas: |
Título em espanhol: Dinámica de la comunidad de malezas a lo largo del crecimiento de piña en la región semiárida brasileña. |
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Conteúdo: |
The pineapple belongs to the family Bromeliaceae and is a slow-growing succulent monocot with a reduced superficial root system. For this reason, the interference of weeds in competition with this crop can cause significant losses to the production. One of the bases to elaborate a control strategy is the knowledge of the diversity of weeds that occur in the cultivated areas. The objective of this study was to identify the weed community during pineapple growth in a semi-arid climate region of Brazil. Weeds were collected 60, 120, 180, 240, 300, and 360 days after planting (DAP) the pineapple. These collections were made in three different plots every two months until floral induction, composed of three pineapple cultivars. The weed community found in the irrigated pineapple field, in semi-arid climate conditions, was mostly composed by species belonging to the families Amaranthaceae, Asteraceae, Convolvulaceae, Fabaceae, Malvaceae, and Poaceae. The highest diversity of weed species was found at 60 DAP. The species Ipomoea acuminata was present throughout the development of the pineapple and showed the highest importance value index in most of the periods evaluated during the pineapple growth. |
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Palavras-Chave: |
Semiárido. |
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Thesagro: |
Abacaxi; Ananás Comosus; Erva Daninha. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150947/1/Art-GC-2022-04.pdf
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Marc: |
LEADER 02099naa a2200265 a 4500
001 2150947
005 2023-03-27
008 2022 bl uuuu u00u1 u #d
022 $a0120-9965
024 7 $a10.15446/agron.colomb.v40n1.94079$2DOI
100 1 $aSANTOS, J. R. P. dos
245 $aDynamics of the weed community during pineapple growth in the Brazilian semi-arid region.$h[electronic resource]
260 $c2022
500 $aTítulo em espanhol: Dinámica de la comunidad de malezas a lo largo del crecimiento de piña en la región semiárida brasileña.
520 $aThe pineapple belongs to the family Bromeliaceae and is a slow-growing succulent monocot with a reduced superficial root system. For this reason, the interference of weeds in competition with this crop can cause significant losses to the production. One of the bases to elaborate a control strategy is the knowledge of the diversity of weeds that occur in the cultivated areas. The objective of this study was to identify the weed community during pineapple growth in a semi-arid climate region of Brazil. Weeds were collected 60, 120, 180, 240, 300, and 360 days after planting (DAP) the pineapple. These collections were made in three different plots every two months until floral induction, composed of three pineapple cultivars. The weed community found in the irrigated pineapple field, in semi-arid climate conditions, was mostly composed by species belonging to the families Amaranthaceae, Asteraceae, Convolvulaceae, Fabaceae, Malvaceae, and Poaceae. The highest diversity of weed species was found at 60 DAP. The species Ipomoea acuminata was present throughout the development of the pineapple and showed the highest importance value index in most of the periods evaluated during the pineapple growth.
650 $aAbacaxi
650 $aAnanás Comosus
650 $aErva Daninha
653 $aSemiárido
700 1 $aMAIA, V. M.
700 1 $aSILVA, B. S. da
700 1 $aDEMICHELI, P. M.
700 1 $aASPIAZÚ, I.
700 1 $aCONCENÇO, G.
773 $tAgronomía Colombiana$gv. 40, n. 1, p. 109-119, 2022.
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