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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha : |
14/04/2015 |
Actualizado : |
25/11/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
WILMAN, D.; OLMOS, F.; HAMILTON, R.S. |
Afiliación : |
D. WILMAN, Institute of Rural Sciences, University of Wales, Aberystwyth SY23 3AL, UK; FERNANDO ELCEAR OLMOS LOPEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; R. S. HAMILTON, Institute of Grassland and Environmental Research, Aberystwyth SY23 3EB, UK. |
Título : |
The potential of seed-shedding and seedling development to contribute to the persistence of white clover (Trifolium repens) in grazed swards in Uruguay. |
Fecha de publicación : |
2005 |
Fuente / Imprenta : |
Journal of Agricultural Science, 2005, v143, 493-501. |
DOI : |
10.1017/S0021859605005654 |
Idioma : |
Inglés |
Notas : |
Article history: Revised MS received 19 August 2005. |
Contenido : |
The present study was conducted to investigate whether white clover (Trifolium repens L.) in grazed swards in Uruguay can produce and shed sufficient seed, and whether sufficient seedlings can develop and survive, to make an important contribution to the long-term persistence of the species. Five sites, on which survival of white clover had been better than is usual in Uruguay, were studied in 1995–97. The sites had been sown with white clover 11–15 years previously and were managed mainly by cattle grazing. The number of white clover inflorescences/m2 was at least 18 at nearly half the counts in the study and the number of viable seeds in the top 5 cm of soil was at least 1500 at half the counts. The results for both the above variables suggest that all five sites had a supply of seed greater than a commercial seed rate at some times of the year. However, the number of seedlings/m2 was >100, a possible target in these conditions, at only one fifth of the counts, and the proportion of seedlings that
survived from one recording date to the next (a period of 4–5 weeks) varied from >0.7 to zero. It seems, therefore, that, in these conditions, the failure of seeds to convert to established plants is likely to be a greater constraint than the production and shedding of seeds. There was considerable variability with time, and between and within sites at each stage of the reproductive cycle. On one site, competition from Bermudagrass (Cynodon dactylon) greatly reduced the number of white clover
seedlings/m2. Overall, the results suggest that white clover in grazed swards in Uruguay can produce and shed sufficient seed, and that sufficient seedlings can develop and survive, to make a significant contribution to the long-term persistence of the species. However, each year there is a risk of seedlings being killed in dry, hot weather. MenosThe present study was conducted to investigate whether white clover (Trifolium repens L.) in grazed swards in Uruguay can produce and shed sufficient seed, and whether sufficient seedlings can develop and survive, to make an important contribution to the long-term persistence of the species. Five sites, on which survival of white clover had been better than is usual in Uruguay, were studied in 1995–97. The sites had been sown with white clover 11–15 years previously and were managed mainly by cattle grazing. The number of white clover inflorescences/m2 was at least 18 at nearly half the counts in the study and the number of viable seeds in the top 5 cm of soil was at least 1500 at half the counts. The results for both the above variables suggest that all five sites had a supply of seed greater than a commercial seed rate at some times of the year. However, the number of seedlings/m2 was >100, a possible target in these conditions, at only one fifth of the counts, and the proportion of seedlings that
survived from one recording date to the next (a period of 4–5 weeks) varied from >0.7 to zero. It seems, therefore, that, in these conditions, the failure of seeds to convert to established plants is likely to be a greater constraint than the production and shedding of seeds. There was considerable variability with time, and between and within sites at each stage of the reproductive cycle. On one site, competition from Bermudagrass (Cynodon dactylon) greatly reduced the number of... Presentar Todo |
Thesagro : |
TRIFOLIUM REPENS; URUGUAY. |
Asunto categoría : |
A50 Investigación agraria |
Marc : |
LEADER 02518naa a2200193 a 4500 001 1052520 005 2019-11-25 008 2005 bl uuuu u00u1 u #d 024 7 $a10.1017/S0021859605005654$2DOI 100 1 $aWILMAN, D. 245 $aThe potential of seed-shedding and seedling development to contribute to the persistence of white clover (Trifolium repens) in grazed swards in Uruguay. 260 $c2005 500 $aArticle history: Revised MS received 19 August 2005. 520 $aThe present study was conducted to investigate whether white clover (Trifolium repens L.) in grazed swards in Uruguay can produce and shed sufficient seed, and whether sufficient seedlings can develop and survive, to make an important contribution to the long-term persistence of the species. Five sites, on which survival of white clover had been better than is usual in Uruguay, were studied in 1995–97. The sites had been sown with white clover 11–15 years previously and were managed mainly by cattle grazing. The number of white clover inflorescences/m2 was at least 18 at nearly half the counts in the study and the number of viable seeds in the top 5 cm of soil was at least 1500 at half the counts. The results for both the above variables suggest that all five sites had a supply of seed greater than a commercial seed rate at some times of the year. However, the number of seedlings/m2 was >100, a possible target in these conditions, at only one fifth of the counts, and the proportion of seedlings that survived from one recording date to the next (a period of 4–5 weeks) varied from >0.7 to zero. It seems, therefore, that, in these conditions, the failure of seeds to convert to established plants is likely to be a greater constraint than the production and shedding of seeds. There was considerable variability with time, and between and within sites at each stage of the reproductive cycle. On one site, competition from Bermudagrass (Cynodon dactylon) greatly reduced the number of white clover seedlings/m2. Overall, the results suggest that white clover in grazed swards in Uruguay can produce and shed sufficient seed, and that sufficient seedlings can develop and survive, to make a significant contribution to the long-term persistence of the species. However, each year there is a risk of seedlings being killed in dry, hot weather. 650 $aTRIFOLIUM REPENS 650 $aURUGUAY 700 1 $aOLMOS, F. 700 1 $aHAMILTON, R.S. 773 $tJournal of Agricultural Science, 2005, v143, 493-501.
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INIA Tacuarembó (TBO) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha actual : |
24/04/2023 |
Actualizado : |
09/05/2023 |
Tipo de producción científica : |
Capítulo en Libro Técnico-Científico |
Autor : |
QUIÑONES, A.; KASPARY, T. E.; GARCIA, A. |
Afiliación : |
AMPARO QUIÑONES DELLEPIANE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; TIAGO EDU KASPARY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MILTON ALEJANDRO GARCIA LATASA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Malezas en sistemas ganaderos y agrícolas. (Capítulo 6). |
Complemento del título : |
Primera sección: Transitando hacia la protección agroecológica de los cultivos. Editora: Carolina Leoni. |
Fecha de publicación : |
2023 |
Fuente / Imprenta : |
In: Georgina Paula García-Inza; José María Paruelo; Roberto Zoppolo. (eds). Aportes científicos y tecnológicos del Instituto Nacional de Investigación Agropecuaria (INIA) del Uruguay a las trayectorias agroecológicas. Ciudad Autónoma de Buenos Aires : Fundación CICCUS, 2023. p.107-128. |
Páginas : |
p.107-128. |
ISBN : |
978-987-693-926-3 |
Idioma : |
Español |
Contenido : |
Las malezas son plantas no deseadas que se desarrollan fuera de lugar e interfieren con las actividades o el bienestar humano (WSSA, 1956). ---- 1. Introducción. --
1.1. Contextualización de la problemática de malezas. -- 1.2. Las malezas y el uso de herbicidas en Uruguay. -- 2. Abordaje actual del manejo de malezas. -- 2.1. Sistemas ganaderos. -- 2.2. Sistemas agrícolas. -- 3. Tecnología propuesta. -- 3.1. Sistema ganadero. Manejo integrado de malezas. -- 3.2. Sistemas agrícolas. Uso de cultivos de cobertura y rolado en el manejo de malezas. -- 4. Mejoras a partir del uso/de la implementación de la tecnología propuesta. -- 4.1. Sistema ganadero. Efectos directos e indirectos del control de malezas. -- 4.2. Sistemas agrícolas. -- Densidad de siembra de avena negra y control de malezas. -- Rolado como método de terminación en avena negra. -- 5. Nuevas tecnologías y perspectivas. -- 5.1. Uso de Paspalum notatum INIA Sepé para el manejo de capín Annoni. -- 5.2. Aplicaciones de precisión para el manejo de malezas. -- |
Thesagro : |
HERBICIDAS; MALEZAS; SISTEMAS DE PRODUCCIÓN. |
Asunto categoría : |
F01 Cultivo |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/17070/1/Capitulo6Malezasensistemasganaderosyagricolas.pdf
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Marc : |
LEADER 01854naa a2200205 a 4500 001 1064051 005 2023-05-09 008 2023 bl uuuu u00u1 u #d 020 $a978-987-693-926-3 100 1 $aQUIÑONES, A. 245 $aMalezas en sistemas ganaderos y agrícolas. (Capítulo 6).$h[electronic resource] 260 $c2023 300 $ap.107-128. 520 $aLas malezas son plantas no deseadas que se desarrollan fuera de lugar e interfieren con las actividades o el bienestar humano (WSSA, 1956). ---- 1. Introducción. -- 1.1. Contextualización de la problemática de malezas. -- 1.2. Las malezas y el uso de herbicidas en Uruguay. -- 2. Abordaje actual del manejo de malezas. -- 2.1. Sistemas ganaderos. -- 2.2. Sistemas agrícolas. -- 3. Tecnología propuesta. -- 3.1. Sistema ganadero. Manejo integrado de malezas. -- 3.2. Sistemas agrícolas. Uso de cultivos de cobertura y rolado en el manejo de malezas. -- 4. Mejoras a partir del uso/de la implementación de la tecnología propuesta. -- 4.1. Sistema ganadero. Efectos directos e indirectos del control de malezas. -- 4.2. Sistemas agrícolas. -- Densidad de siembra de avena negra y control de malezas. -- Rolado como método de terminación en avena negra. -- 5. Nuevas tecnologías y perspectivas. -- 5.1. Uso de Paspalum notatum INIA Sepé para el manejo de capín Annoni. -- 5.2. Aplicaciones de precisión para el manejo de malezas. -- 650 $aHERBICIDAS 650 $aMALEZAS 650 $aSISTEMAS DE PRODUCCIÓN 700 1 $aKASPARY, T. E. 700 1 $aGARCIA, A. 773 $tIn: Georgina Paula García-Inza; José María Paruelo; Roberto Zoppolo. (eds). Aportes científicos y tecnológicos del Instituto Nacional de Investigación Agropecuaria (INIA) del Uruguay a las trayectorias agroecológicas. Ciudad Autónoma de Buenos Aires : Fundación CICCUS, 2023. p.107-128.
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