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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
10/01/2011 |
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Data da última atualização: |
29/09/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CERDEIRA, A. L.; DUKE, S. O. |
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Afiliação: |
ANTONIO LUIZ CERDEIRA, CNPMA; Stephen O. Duke, USDA-ARS. |
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Título: |
Effects of glyphosate-resistant crop cultivation on soil and water quality |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
GM Crops,Austin, v. 1, n. 1, p. 16-24, 2010. |
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Idioma: |
Inglês |
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Conteúdo: |
Transgenic glyphosate-resistant crops (GRCs) have been com- mercialized and grown extensively in the western Hemisphere and, to a lesser extent, elsewhere. GRCs have generally become dominant in those countries where they have been approved for growing. Potential effects of glyphosate on soil and water are minimal, compared to the effects of the herbicides that are re- placed when GRCs are adopted. Perhaps the most important indirect effect is that GRCs crops promote the adoption of re- duced- or no-tillage agriculture, resulting in a signifcant reduc- tion in soil erosion and water contamination. Glyphosate and its degradation product, aminomethylphosphonate (AMPA), residues are not usually detected in high levels in ground or surface water in areas where glyphosate is used extensively. Furthermore, both glyphosate and AMPA are considered to be much more toxico- logically and environmentally benign than most of the herbicides replaced by glyphosate. |
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Palavras-Chave: |
Herbicide-resistant crops; Resistência a herbicida. |
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Thesaurus Nal: |
Environment; Glyphosate; Soil; Water. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/47350/1/2010AP03-2.pdf
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Marc: |
LEADER 01540naa a2200205 a 4500
001 1872430
005 2015-09-29
008 2010 bl uuuu u00u1 u #d
100 1 $aCERDEIRA, A. L.
245 $aEffects of glyphosate-resistant crop cultivation on soil and water quality$h[electronic resource]
260 $c2010
520 $aTransgenic glyphosate-resistant crops (GRCs) have been com- mercialized and grown extensively in the western Hemisphere and, to a lesser extent, elsewhere. GRCs have generally become dominant in those countries where they have been approved for growing. Potential effects of glyphosate on soil and water are minimal, compared to the effects of the herbicides that are re- placed when GRCs are adopted. Perhaps the most important indirect effect is that GRCs crops promote the adoption of re- duced- or no-tillage agriculture, resulting in a signifcant reduc- tion in soil erosion and water contamination. Glyphosate and its degradation product, aminomethylphosphonate (AMPA), residues are not usually detected in high levels in ground or surface water in areas where glyphosate is used extensively. Furthermore, both glyphosate and AMPA are considered to be much more toxico- logically and environmentally benign than most of the herbicides replaced by glyphosate.
650 $aEnvironment
650 $aGlyphosate
650 $aSoil
650 $aWater
653 $aHerbicide-resistant crops
653 $aResistência a herbicida
700 1 $aDUKE, S. O.
773 $tGM Crops,Austin$gv. 1, n. 1, p. 16-24, 2010.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
08/10/2018 |
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Data da última atualização: |
02/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
ASSIS, G. M. L. de; MIQUELONI, D. P.; AZÊVEDO, H. S. F. S.; VALENTIM, J. F. |
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Afiliação: |
GISELLE MARIANO LESSA DE ASSIS, CPAF-AC; Daniela Popim Miqueloni, Universidade Federal do Acre (Ufac); Hellen S. F. S. Azêvedo, Universidade Federal do Acre (Ufac); JUDSON FERREIRA VALENTIM, CPAF-AC. |
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Título: |
How does seed size of Arachis pintoi affect establishment, top-growth and seed production? |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Tropical Grasslands-Forrajes Tropicales, v. 6, n. 3, p. 148-157, June/Sept. 2018. |
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ISSN: |
2346-3775 |
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DOI: |
10.17138/TGFT(6)148-157 |
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Idioma: |
Inglês |
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Conteúdo: |
The adoption of Arachis pintoi in mixed pastures in the humid tropics remains limited to specific success cases, mainly because of high seed cost. The search for methods to reduce these costs is a key challenge towards promoting wider adoption of this legume in livestock production systems in the tropics. One possible option is to select for smaller seeds, which would allow lower sowing rates, while ensuring similar plant numbers. Alternatively, high seed production costs could be offset by utilizing forage from seed production fields for hay or silage prior to seed harvest. This study evaluated the effects of seed size on crop performance of A. pintoi cv. BRS Mandobi in a tropical forage + seed production system, plus the effects of harvesting forage during the growth stage on seed production. Parameters measured were: ground cover, height, pest and disease incidence, total forage and leaf yield plus seed yield and seed sizes. Smaller seeds resulted in morphologically smaller plants and lower forage mass during the initial phase of crop establishment. However, seed size had no effect on ground cover at the end of the establishment period or on seed production and quality. Harvesting forage during the growth cycle had no effect on seed production. This indicates the possibility of harvesting forage from seed crops of A. pintoi during growth without jeopardizing seed yields as a means of offsetting high costs of seed production. However, the study has failed to provide conclusive evidence whether variation in seed size in BRS Mandobi is mainly genetic or a response to micro-environmental conditions. Further studies with individual plants from BRS Mandobi are necessary to determine the heritability of seed size. La adopción de Arachis pintoi en pasturas mixtas en el trópico húmedo se limita a casos específicos de éxito, principalmente debido al alto costo de la semilla. La búsqueda de métodos para reducir esos costos es un desafío clave para promover la adopción a gran escala de esta leguminosa en sistemas de producción pecuaria en el trópico. Una posible opción es seleccionar semillas más pequeñas, lo que permitiría tasas de siembra más bajas, pero un número de plantas similar. Además, la utilización de la masa forrajera de los campos de producción de semillas para heno o ensilaje puede compensar los altos costos de producción de semillas. Este estudio se realizó en Rio Branco, Acre, Brasil con el fin de: (1) evaluar el efecto del tamaño de la semilla en el establecimiento y la producción de A. pintoi cv. BRS Mandobi en un sistema tropical de producción de forraje + semilla, y (2) medir los efectos de la cosecha de forraje en la producción de semilla. Los parámetros evaluados fueron: cobertura del suelo, altura de planta, incidencia de plagas y enfermedades, producción de forraje total y rendimiento foliar; además, rendimiento y tamaño de semilla. Las semillas pequeñas produjeron igualmente plantas morfológicamente pequeñas y con menor masa de forraje durante el establecimiento. Sin embargo, el tamaño de la semilla no tuvo ningún efecto sobre la cobertura del suelo al final del período de establecimiento o sobre el rendimiento y la calidad de la semilla producida. La cosecha de forraje durante el período de crecimiento de A. pintoi no afectó la producción de semillas. Esto indica que la cosecha de forraje en los cultivos de semillas durante el crecimiento puede contribuir a compensar los altos costos de la producción de semillas. Los resultados no son concluyentes sobre si la variabilidad en el tamaño de la semilla en BRS Mandobi es debida principalmente a la genética o las condiciones microambientales. Se necesitan estudios con plantas individuales para inferir sobre la heredabilidad del tamaño de la semilla. MenosThe adoption of Arachis pintoi in mixed pastures in the humid tropics remains limited to specific success cases, mainly because of high seed cost. The search for methods to reduce these costs is a key challenge towards promoting wider adoption of this legume in livestock production systems in the tropics. One possible option is to select for smaller seeds, which would allow lower sowing rates, while ensuring similar plant numbers. Alternatively, high seed production costs could be offset by utilizing forage from seed production fields for hay or silage prior to seed harvest. This study evaluated the effects of seed size on crop performance of A. pintoi cv. BRS Mandobi in a tropical forage + seed production system, plus the effects of harvesting forage during the growth stage on seed production. Parameters measured were: ground cover, height, pest and disease incidence, total forage and leaf yield plus seed yield and seed sizes. Smaller seeds resulted in morphologically smaller plants and lower forage mass during the initial phase of crop establishment. However, seed size had no effect on ground cover at the end of the establishment period or on seed production and quality. Harvesting forage during the growth cycle had no effect on seed production. This indicates the possibility of harvesting forage from seed crops of A. pintoi during growth without jeopardizing seed yields as a means of offsetting high costs of seed production. However, the study has failed to provide conclu... Mostrar Tudo |
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Palavras-Chave: |
Acre; Amazonia Occidental; Amazônia Ocidental; Amendoim forrageiro; Arachis pintoi cv Mandobi; Cacahuetes forrajeros; Embrapa Acre; Forage peanut; Leguminosas forrajeras; Pastoreo mixto; Producción de plántulas; Rio Branco (AC); Seed size; Tamaño de las semillas; Western Amazon. |
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Thesagro: |
Campo Experimental; Características Agronômicas; Leguminosa Forrageira; Pastagem Consorciada; Produção; Qualidade; Semente; Tamanho. |
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Thesaurus NAL: |
Agronomic traits; Forage legumes; Mixed grazing; Seedling production. |
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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/item/184086/1/26691.pdf
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Marc: |
LEADER 05314naa a2200505 a 4500
001 2097056
005 2021-07-02
008 2018 bl uuuu u00u1 u #d
022 $a2346-3775
024 7 $a10.17138/TGFT(6)148-157$2DOI
100 1 $aASSIS, G. M. L. de
245 $aHow does seed size of Arachis pintoi affect establishment, top-growth and seed production?$h[electronic resource]
260 $c2018
520 $aThe adoption of Arachis pintoi in mixed pastures in the humid tropics remains limited to specific success cases, mainly because of high seed cost. The search for methods to reduce these costs is a key challenge towards promoting wider adoption of this legume in livestock production systems in the tropics. One possible option is to select for smaller seeds, which would allow lower sowing rates, while ensuring similar plant numbers. Alternatively, high seed production costs could be offset by utilizing forage from seed production fields for hay or silage prior to seed harvest. This study evaluated the effects of seed size on crop performance of A. pintoi cv. BRS Mandobi in a tropical forage + seed production system, plus the effects of harvesting forage during the growth stage on seed production. Parameters measured were: ground cover, height, pest and disease incidence, total forage and leaf yield plus seed yield and seed sizes. Smaller seeds resulted in morphologically smaller plants and lower forage mass during the initial phase of crop establishment. However, seed size had no effect on ground cover at the end of the establishment period or on seed production and quality. Harvesting forage during the growth cycle had no effect on seed production. This indicates the possibility of harvesting forage from seed crops of A. pintoi during growth without jeopardizing seed yields as a means of offsetting high costs of seed production. However, the study has failed to provide conclusive evidence whether variation in seed size in BRS Mandobi is mainly genetic or a response to micro-environmental conditions. Further studies with individual plants from BRS Mandobi are necessary to determine the heritability of seed size. La adopción de Arachis pintoi en pasturas mixtas en el trópico húmedo se limita a casos específicos de éxito, principalmente debido al alto costo de la semilla. La búsqueda de métodos para reducir esos costos es un desafío clave para promover la adopción a gran escala de esta leguminosa en sistemas de producción pecuaria en el trópico. Una posible opción es seleccionar semillas más pequeñas, lo que permitiría tasas de siembra más bajas, pero un número de plantas similar. Además, la utilización de la masa forrajera de los campos de producción de semillas para heno o ensilaje puede compensar los altos costos de producción de semillas. Este estudio se realizó en Rio Branco, Acre, Brasil con el fin de: (1) evaluar el efecto del tamaño de la semilla en el establecimiento y la producción de A. pintoi cv. BRS Mandobi en un sistema tropical de producción de forraje + semilla, y (2) medir los efectos de la cosecha de forraje en la producción de semilla. Los parámetros evaluados fueron: cobertura del suelo, altura de planta, incidencia de plagas y enfermedades, producción de forraje total y rendimiento foliar; además, rendimiento y tamaño de semilla. Las semillas pequeñas produjeron igualmente plantas morfológicamente pequeñas y con menor masa de forraje durante el establecimiento. Sin embargo, el tamaño de la semilla no tuvo ningún efecto sobre la cobertura del suelo al final del período de establecimiento o sobre el rendimiento y la calidad de la semilla producida. La cosecha de forraje durante el período de crecimiento de A. pintoi no afectó la producción de semillas. Esto indica que la cosecha de forraje en los cultivos de semillas durante el crecimiento puede contribuir a compensar los altos costos de la producción de semillas. Los resultados no son concluyentes sobre si la variabilidad en el tamaño de la semilla en BRS Mandobi es debida principalmente a la genética o las condiciones microambientales. Se necesitan estudios con plantas individuales para inferir sobre la heredabilidad del tamaño de la semilla.
650 $aAgronomic traits
650 $aForage legumes
650 $aMixed grazing
650 $aSeedling production
650 $aCampo Experimental
650 $aCaracterísticas Agronômicas
650 $aLeguminosa Forrageira
650 $aPastagem Consorciada
650 $aProdução
650 $aQualidade
650 $aSemente
650 $aTamanho
653 $aAcre
653 $aAmazonia Occidental
653 $aAmazônia Ocidental
653 $aAmendoim forrageiro
653 $aArachis pintoi cv Mandobi
653 $aCacahuetes forrajeros
653 $aEmbrapa Acre
653 $aForage peanut
653 $aLeguminosas forrajeras
653 $aPastoreo mixto
653 $aProducción de plántulas
653 $aRio Branco (AC)
653 $aSeed size
653 $aTamaño de las semillas
653 $aWestern Amazon
700 1 $aMIQUELONI, D. P.
700 1 $aAZÊVEDO, H. S. F. S.
700 1 $aVALENTIM, J. F.
773 $tTropical Grasslands-Forrajes Tropicales$gv. 6, n. 3, p. 148-157, June/Sept. 2018.
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Embrapa Acre (CPAF-AC) |
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