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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
17/08/2004 |
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Data da última atualização: |
10/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
YURI, J. E.; MOTA, J. H.; RESENDE, G. M. de; SOUZA, R. J. de; RODRIGUES JÚNIOR. J. C. |
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Afiliação: |
GERALDO MILANEZ DE RESENDE, CPATSA. |
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Título: |
Desempenho de cultivares de alface tipo americana em cultivo de outono no Sul de Minas Gerais. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Ciência e Agrotecnologia, Lavras, v. 28, n. 2, p. 282-286, mar./abr. 2004. |
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Idioma: |
Português |
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Conteúdo: |
Com o objetivo de avaliar o desempenho de cultivares de alface tipo americana (Lactuca sativa L.) em cultivo de outono, foi conduzido um experimento no município de Santana da Vargem, MG, no perído de março a junho de 2002. Utilizou-se o delineamento de blocos ao acaso com treze tratamentos (cultivares Adal, 4553 R7, AEL 10, Iglo, Rocco RZ, Rubette, RX 66, RPT 3030, RPT 2020, Paloma, Sandy, Legacy e Radier) e três repetições. As cultivares 45-53R7, RPT 2020, Paloma. Raider e RPT 3030 apresentaram massa fresca total estatisticamente maiores que as demais cultivares, com produtividades de 1.016,9; 1.029,4; 1.044,9; 1.075,2 e 1.105,2 g planta-1, respectivamente. As cultivares 45-53R7, RPT 2020, Paloma, Raider, RPT 3030, AEL 10 e Rocco, com produtividade de massa fresca comercial oscilando entre 599,1 a 739,1 g planta-1, foram estatisticamente mais produtivas que as demais cultivares. A cultivar 45-53R7, com circunferência de cabeça comercial de 49,2 cm, sobressaiu-se das demais. Não houve diferenças significativas entre os materiais quanto ao comprimento de caule. Quanto à simetria da cabeça comercial, as cultivares RPT 2020, Raider e RPT 3030, com notas 4,6; 5,0 e 5,0, respectivamente, foram mais simétricas do que as demais cultivares. |
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Palavras-Chave: |
Competição de cultivar. |
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Thesagro: |
Alface; Lactuca Sativa; Produção. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/176618/1/a05.pdf
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Marc: |
LEADER 01914naa a2200217 a 4500
001 1153839
005 2018-05-10
008 2004 bl uuuu u00u1 u #d
100 1 $aYURI, J. E.
245 $aDesempenho de cultivares de alface tipo americana em cultivo de outono no Sul de Minas Gerais.
260 $c2004
520 $aCom o objetivo de avaliar o desempenho de cultivares de alface tipo americana (Lactuca sativa L.) em cultivo de outono, foi conduzido um experimento no município de Santana da Vargem, MG, no perído de março a junho de 2002. Utilizou-se o delineamento de blocos ao acaso com treze tratamentos (cultivares Adal, 4553 R7, AEL 10, Iglo, Rocco RZ, Rubette, RX 66, RPT 3030, RPT 2020, Paloma, Sandy, Legacy e Radier) e três repetições. As cultivares 45-53R7, RPT 2020, Paloma. Raider e RPT 3030 apresentaram massa fresca total estatisticamente maiores que as demais cultivares, com produtividades de 1.016,9; 1.029,4; 1.044,9; 1.075,2 e 1.105,2 g planta-1, respectivamente. As cultivares 45-53R7, RPT 2020, Paloma, Raider, RPT 3030, AEL 10 e Rocco, com produtividade de massa fresca comercial oscilando entre 599,1 a 739,1 g planta-1, foram estatisticamente mais produtivas que as demais cultivares. A cultivar 45-53R7, com circunferência de cabeça comercial de 49,2 cm, sobressaiu-se das demais. Não houve diferenças significativas entre os materiais quanto ao comprimento de caule. Quanto à simetria da cabeça comercial, as cultivares RPT 2020, Raider e RPT 3030, com notas 4,6; 5,0 e 5,0, respectivamente, foram mais simétricas do que as demais cultivares.
650 $aAlface
650 $aLactuca Sativa
650 $aProdução
653 $aCompetição de cultivar
700 1 $aMOTA, J. H.
700 1 $aRESENDE, G. M. de
700 1 $aSOUZA, R. J. de
700 1 $aRODRIGUES JÚNIOR. J. C.
773 $tCiência e Agrotecnologia, Lavras$gv. 28, n. 2, p. 282-286, mar./abr. 2004.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
01/09/2022 |
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Data da última atualização: |
11/11/2022 |
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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: |
ROCHA, F. I; MACHADO, A. F. L.; HUERTAS TAVARES, O. C.; CARDOSO, J. C.; UZEDA, M. C. |
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Afiliação: |
FERNANDO IGNE ROCHA, UFRRJ; AROLDO FERREIRA LOPES MACHADO, UFRRJ; ORLANDO CARLOS HUERTAS TAVARES, UFRRJ; JESSICA CHAVES CARDOSO, UNIVERSITY OF ALBERTA, CA; MARIELLA CAMARDELLI UZEDA, CNPAB. |
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Título: |
Growth and nutrient accumulation metrics of Diodia saponariifolia plants as a potential native cover crop in southeastern Brazil. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Weed Biology and Management, 11 july 2022. |
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DOI: |
10.1111/wbm.12255 |
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Idioma: |
Português |
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Conteúdo: |
Competition for resources between crops and weeds hinders the increase of production in agroecosystems. The trait-based plant species selection of cover crops can be a useful tool to suppress competing plants in addition to providing environmental services. Here, we assessed the growth and macronutrient accumulation metrics in Diodia saponariifolia (Rubiaceae) plants, a native cover crop found in family farming systems in southeastern Brazil. Under greenhouse conditions, three viable D. saponariifolia cuttings were planted per tray. The experimental design was entirely randomized, with treatments consisting of plant sampling times, at regular intervals of 7 days between 16 and 93 days after transplanting (DAT) and 15 days between 93 and 138 DAT. Based on dry mass and chemical analysis of leaves, stems, and roots; we fitted the logistic model to explore the metrics of growth and macronutrient accumulation. Overall, the increment in plant dry mass was slow about halfway through the experimental period, being subsequently replaced by a phase of rapid growth. The stem was the plant fraction with the highest relative biomass accumulation. The total macronutrient concentration followed the descending order of K > N > Ca > Mg > P, varying along the plant ontogeny. Considering the nutrient content, the estimated 200 g m(-2) of aboveground dry mass, and 0.3 m(2) of leaf area, it is suggested to perform the first mechanical weeding along the third month of growth. Our results suggest that D. saponariifolia has satisfactory agronomical features for its establishment as a cover crop in different agricultural contexts. MenosCompetition for resources between crops and weeds hinders the increase of production in agroecosystems. The trait-based plant species selection of cover crops can be a useful tool to suppress competing plants in addition to providing environmental services. Here, we assessed the growth and macronutrient accumulation metrics in Diodia saponariifolia (Rubiaceae) plants, a native cover crop found in family farming systems in southeastern Brazil. Under greenhouse conditions, three viable D. saponariifolia cuttings were planted per tray. The experimental design was entirely randomized, with treatments consisting of plant sampling times, at regular intervals of 7 days between 16 and 93 days after transplanting (DAT) and 15 days between 93 and 138 DAT. Based on dry mass and chemical analysis of leaves, stems, and roots; we fitted the logistic model to explore the metrics of growth and macronutrient accumulation. Overall, the increment in plant dry mass was slow about halfway through the experimental period, being subsequently replaced by a phase of rapid growth. The stem was the plant fraction with the highest relative biomass accumulation. The total macronutrient concentration followed the descending order of K > N > Ca > Mg > P, varying along the plant ontogeny. Considering the nutrient content, the estimated 200 g m(-2) of aboveground dry mass, and 0.3 m(2) of leaf area, it is suggested to perform the first mechanical weeding along the third month of growth. Our results suggest ... Mostrar Tudo |
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Palavras-Chave: |
Agrobiodiversity; Diodia saponariifolia; Growth analysis; Nutrient cycling. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02365naa a2200229 a 4500
001 2145979
005 2022-11-11
008 2022 bl uuuu u00u1 u #d
024 7 $a10.1111/wbm.12255$2DOI
100 1 $aROCHA, F. I
245 $aGrowth and nutrient accumulation metrics of Diodia saponariifolia plants as a potential native cover crop in southeastern Brazil.$h[electronic resource]
260 $c2022
520 $aCompetition for resources between crops and weeds hinders the increase of production in agroecosystems. The trait-based plant species selection of cover crops can be a useful tool to suppress competing plants in addition to providing environmental services. Here, we assessed the growth and macronutrient accumulation metrics in Diodia saponariifolia (Rubiaceae) plants, a native cover crop found in family farming systems in southeastern Brazil. Under greenhouse conditions, three viable D. saponariifolia cuttings were planted per tray. The experimental design was entirely randomized, with treatments consisting of plant sampling times, at regular intervals of 7 days between 16 and 93 days after transplanting (DAT) and 15 days between 93 and 138 DAT. Based on dry mass and chemical analysis of leaves, stems, and roots; we fitted the logistic model to explore the metrics of growth and macronutrient accumulation. Overall, the increment in plant dry mass was slow about halfway through the experimental period, being subsequently replaced by a phase of rapid growth. The stem was the plant fraction with the highest relative biomass accumulation. The total macronutrient concentration followed the descending order of K > N > Ca > Mg > P, varying along the plant ontogeny. Considering the nutrient content, the estimated 200 g m(-2) of aboveground dry mass, and 0.3 m(2) of leaf area, it is suggested to perform the first mechanical weeding along the third month of growth. Our results suggest that D. saponariifolia has satisfactory agronomical features for its establishment as a cover crop in different agricultural contexts.
653 $aAgrobiodiversity
653 $aDiodia saponariifolia
653 $aGrowth analysis
653 $aNutrient cycling
700 1 $aMACHADO, A. F. L.
700 1 $aHUERTAS TAVARES, O. C.
700 1 $aCARDOSO, J. C.
700 1 $aUZEDA, M. C.
773 $tWeed Biology and Management, 11 july 2022.
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