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Registro Completo |
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Biblioteca(s): |
Embrapa Solos / UEP-Recife. |
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Data corrente: |
10/07/2017 |
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Data da última atualização: |
10/07/2017 |
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Autoria: |
BORTOLON, E. S. O.; MIELNICZUK, J.; TORNQUIST, C. G.; LOPES, F.; GIASSON, E.; BERGAMASCHI, H. |
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Título: |
Potencial de uso do modelo Century e SIG para avaliar o impacto da agricultura sobre estoques regionais de carbono orgânico do solo. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 36, n. 3, p. 831-849, maio/jun. 2012. |
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Idioma: |
Português |
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Conteúdo: |
Este trabalho teve como objetivo utilizar o modelo Century associado a técnicas de geoprocessamento e sensoriamento remoto para avaliar os efeitos das alterações do uso agrícola e manejo do solo na dinâmica do carbono orgânico do solo (COS) em propriedades rurais do Distritio de Santana, Ijuí - RS.
This study aimed to use the Century 4.0 model associated with geoprocessing and remote sensing techniques to evaluate the effects of agricultural use and soil mangement changes on dynamics of soil organic carbon (SOC) on farms in Santana (Ijuí, RS, Brazil). |
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Palavras-Chave: |
Carbon modeling; Dynamic modelig; Espacialmente explicita; Modelagem dinâmica; Modelagem do C; Sistemas de manejo; Spatial explicit. |
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Thesagro: |
Matéria Orgânica; Solo. |
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Thesaurus Nal: |
management systems; Soil; soil organic matter. |
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Categoria do assunto: |
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Marc: |
LEADER 01557naa a2200325 a 4500
001 2072316
005 2017-07-10
008 2012 bl uuuu u00u1 u #d
100 1 $aBORTOLON, E. S. O.
245 $aPotencial de uso do modelo Century e SIG para avaliar o impacto da agricultura sobre estoques regionais de carbono orgânico do solo.
260 $c2012
520 $aEste trabalho teve como objetivo utilizar o modelo Century associado a técnicas de geoprocessamento e sensoriamento remoto para avaliar os efeitos das alterações do uso agrícola e manejo do solo na dinâmica do carbono orgânico do solo (COS) em propriedades rurais do Distritio de Santana, Ijuí - RS. This study aimed to use the Century 4.0 model associated with geoprocessing and remote sensing techniques to evaluate the effects of agricultural use and soil mangement changes on dynamics of soil organic carbon (SOC) on farms in Santana (Ijuí, RS, Brazil).
650 $amanagement systems
650 $aSoil
650 $asoil organic matter
650 $aMatéria Orgânica
650 $aSolo
653 $aCarbon modeling
653 $aDynamic modelig
653 $aEspacialmente explicita
653 $aModelagem dinâmica
653 $aModelagem do C
653 $aSistemas de manejo
653 $aSpatial explicit
700 1 $aMIELNICZUK, J.
700 1 $aTORNQUIST, C. G.
700 1 $aLOPES, F.
700 1 $aGIASSON, E.
700 1 $aBERGAMASCHI, H.
773 $tRevista Brasileira de Ciência do Solo, Viçosa, MG$gv. 36, n. 3, p. 831-849, maio/jun. 2012.
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Registro original: |
Embrapa Solos / UEP-Recife (CNPS-UEPR) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Pecuária Sudeste. |
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Data corrente: |
03/05/2024 |
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Data da última atualização: |
10/05/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
FERREIRA, J. P.; MARQUES, D. M.; KARAM, D.; BORGHI, E.; MAGALHAES, P. C.; SOUZA, K. R. D. de; ARANTES, S. D.; SOUZA, T. C. de. |
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Afiliação: |
JANAÍNA PIZA FERREIRA, UNIVERSIDADE FEDERAL DE ALFENAS; DANIELE MARIA MARQUES, UNIVERSIDADE FEDERAL DE ALFENAS; DECIO KARAM, CNPMS; EMERSON BORGHI, CPPSE; PAULO CESAR MAGALHAES, CNPMS; KAMILA REZENDE DÁZIO DE SOUZA, UNIVERSIDADE FEDERAL DE ALFENAS; SARA DOUSSEAU ARANTES, INSTITUTO CAPIXABA DE PESQUISA; THIAGO CORRÊA DE SOUZA, UNIVERSIDADE FEDERAL DE ALFENAS. |
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Título: |
How does early defoliation influence the morphophysiology and biochemical characteristics of maize? |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Plant Growth Regulation, 2024. |
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DOI: |
https://doi.org/10.1007/s10725-024-01145-x |
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Idioma: |
Inglês |
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Notas: |
First online. |
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Conteúdo: |
Defoliation is a type of mechanical stress, and few studies have investigated this process in the early stages of maize development. Pest attacks, hail and machinery traffic have increased in recent decades, thus increasing this stress and potentially leading to losses. Furthermore, there are corn production systems in Brazil where early defoliation naturally occurs. Thus, the objective of this study was to determine the morphophysiological and biochemical changes in maize subjected to early defoliation and their effects on recovery from this stress. The experiment was performed in pots, and the plants were subjected to two treatments at the four fully expanded leaf stage: without defoliation (control) and with defoliation. Morphometric parameters, such as gas exchange, leaf pigment and biomolecule content, phytohormone con- tent, root morphology and leaf anatomy, were evaluated at seven and fourteen days after defoliation. Compared with the control plants, the defoliated corn plants were shorter in height, stem diameter, length, surface area, root diameter and volume, dry biomass and leaf anatomy. However, photosynthesis, chlorophyll content and nutrient content were similar in both treatments. After seven days of treatment, the amino acid content increased in the defoliated plants, and after fourteen days, the reducing sugars, amino acids and proteins decreased in these plants. The levels of gibberellins and salicylic acid were greater in plants subjected to defoliation. The reestablishment of corn plants after defoliation occurred through the action of gibberellins and salicylic acid, which promoted the growth of aboveground biomass, maintenance of chlorophylls and gas exchange. The reallocation of amino acids and reducing sugars also contributes to the formation of new leaf primordia in defoliated plants. MenosDefoliation is a type of mechanical stress, and few studies have investigated this process in the early stages of maize development. Pest attacks, hail and machinery traffic have increased in recent decades, thus increasing this stress and potentially leading to losses. Furthermore, there are corn production systems in Brazil where early defoliation naturally occurs. Thus, the objective of this study was to determine the morphophysiological and biochemical changes in maize subjected to early defoliation and their effects on recovery from this stress. The experiment was performed in pots, and the plants were subjected to two treatments at the four fully expanded leaf stage: without defoliation (control) and with defoliation. Morphometric parameters, such as gas exchange, leaf pigment and biomolecule content, phytohormone con- tent, root morphology and leaf anatomy, were evaluated at seven and fourteen days after defoliation. Compared with the control plants, the defoliated corn plants were shorter in height, stem diameter, length, surface area, root diameter and volume, dry biomass and leaf anatomy. However, photosynthesis, chlorophyll content and nutrient content were similar in both treatments. After seven days of treatment, the amino acid content increased in the defoliated plants, and after fourteen days, the reducing sugars, amino acids and proteins decreased in these plants. The levels of gibberellins and salicylic acid were greater in plants subjected to defoliation. T... Mostrar Tudo |
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Palavras-Chave: |
Anatomia foliar; Fitohormônio. |
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Thesagro: |
Açúcar; Desfolha; Fotossíntese; Milho; Zea Mays. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1164068/1/How-does-early-defoliation-influence-the-morphophysiology.pdf
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Marc: |
LEADER 02716naa a2200313 a 4500
001 2164068
005 2024-05-10
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10725-024-01145-x$2DOI
100 1 $aFERREIRA, J. P.
245 $aHow does early defoliation influence the morphophysiology and biochemical characteristics of maize?$h[electronic resource]
260 $c2024
500 $aFirst online.
520 $aDefoliation is a type of mechanical stress, and few studies have investigated this process in the early stages of maize development. Pest attacks, hail and machinery traffic have increased in recent decades, thus increasing this stress and potentially leading to losses. Furthermore, there are corn production systems in Brazil where early defoliation naturally occurs. Thus, the objective of this study was to determine the morphophysiological and biochemical changes in maize subjected to early defoliation and their effects on recovery from this stress. The experiment was performed in pots, and the plants were subjected to two treatments at the four fully expanded leaf stage: without defoliation (control) and with defoliation. Morphometric parameters, such as gas exchange, leaf pigment and biomolecule content, phytohormone con- tent, root morphology and leaf anatomy, were evaluated at seven and fourteen days after defoliation. Compared with the control plants, the defoliated corn plants were shorter in height, stem diameter, length, surface area, root diameter and volume, dry biomass and leaf anatomy. However, photosynthesis, chlorophyll content and nutrient content were similar in both treatments. After seven days of treatment, the amino acid content increased in the defoliated plants, and after fourteen days, the reducing sugars, amino acids and proteins decreased in these plants. The levels of gibberellins and salicylic acid were greater in plants subjected to defoliation. The reestablishment of corn plants after defoliation occurred through the action of gibberellins and salicylic acid, which promoted the growth of aboveground biomass, maintenance of chlorophylls and gas exchange. The reallocation of amino acids and reducing sugars also contributes to the formation of new leaf primordia in defoliated plants.
650 $aAçúcar
650 $aDesfolha
650 $aFotossíntese
650 $aMilho
650 $aZea Mays
653 $aAnatomia foliar
653 $aFitohormônio
700 1 $aMARQUES, D. M.
700 1 $aKARAM, D.
700 1 $aBORGHI, E.
700 1 $aMAGALHAES, P. C.
700 1 $aSOUZA, K. R. D. de
700 1 $aARANTES, S. D.
700 1 $aSOUZA, T. C. de
773 $tPlant Growth Regulation, 2024.
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Embrapa Milho e Sorgo (CNPMS) |
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