State of knowledge in tiller dynamics
Persistence of sown pastures is a concern for pastoral production worldwide. Fundamentally, when a pasture does not persist the problem can be expressed in terms of inadequate new tiller production or excessive tiller death. However, the collection of data to build an understanding of sward dynamics at this level is time consuming. Tiller survival diagrams are presented for a range of temperate and tropical grass species including Lolium perenne, Lolium multiflorum, Festuca arundinacea, Festuca pratensis, Phleum pratense, Bromus willdenowii, Cynodon dactylon, Brachiaria brizantha, Panicum maximum, Chloris gayana and Paspalum notatum. It is shown that each grass has a unique perennation strategy and accordingly unique strengths and weaknesses that confer persistence or lack of persistence in different situations. There is also confusion in extension circles about the trade-off between tiller size and tiller density and how to detect a suboptimal tiller density. Grass swards respond to high herbage mass by increase of tiller size and reduction in tiller density, but reduction in tiller density is often mistaken for sward decline. A distinctionmust be made between size/density compensation and sward decline. Increased understanding of sward dynamics at this level should help in the evolution of management practices that improve persistence on a range of grassland types.
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Format: | info:ar-repo/semantics/documento de conferencia biblioteca |
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University of Kentucky
2013
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Subjects: | Persistence, Flowering, Pastures, Persistencia, Floración, Pastizales, Pasturas, |
Online Access: | http://hdl.handle.net/20.500.12123/11869 https://uknowledge.uky.edu/igc/22/2-1/3/ |
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Persistence Flowering Pastures Persistencia Floración Pastizales Pasturas Persistence Flowering Pastures Persistencia Floración Pastizales Pasturas |
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Persistence Flowering Pastures Persistencia Floración Pastizales Pasturas Persistence Flowering Pastures Persistencia Floración Pastizales Pasturas Matthew, Cory Agnusdei, Monica Graciela Assuero, Silvia Graciela Sbrissia, André F. Scheneiter, Jorge Omar Silva, Sila C. da State of knowledge in tiller dynamics |
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Persistence of sown pastures is a concern for pastoral production worldwide. Fundamentally, when a pasture does not persist the problem can be expressed in terms of inadequate new tiller production or excessive tiller death. However, the collection of data to build an understanding of sward dynamics at this level is time consuming. Tiller survival diagrams are presented for a range of temperate and tropical grass species including Lolium perenne, Lolium multiflorum, Festuca arundinacea, Festuca pratensis, Phleum pratense, Bromus willdenowii, Cynodon dactylon, Brachiaria brizantha, Panicum maximum, Chloris gayana and Paspalum notatum. It is shown that each grass has a unique perennation strategy and accordingly unique strengths and weaknesses that confer persistence or lack of persistence in different situations. There is also confusion in extension circles about the trade-off between tiller size and tiller density and how to detect a suboptimal tiller density. Grass swards respond to high herbage mass by increase of tiller size and reduction in tiller density, but reduction in tiller density is often mistaken for sward decline. A distinctionmust be made between size/density compensation and sward decline. Increased understanding of sward dynamics at this level should help in the evolution of management practices that improve persistence on a range of grassland types. |
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info:ar-repo/semantics/documento de conferencia |
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Persistence Flowering Pastures Persistencia Floración Pastizales Pasturas |
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Matthew, Cory Agnusdei, Monica Graciela Assuero, Silvia Graciela Sbrissia, André F. Scheneiter, Jorge Omar Silva, Sila C. da |
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Matthew, Cory Agnusdei, Monica Graciela Assuero, Silvia Graciela Sbrissia, André F. Scheneiter, Jorge Omar Silva, Sila C. da |
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Matthew, Cory |
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State of knowledge in tiller dynamics |
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State of knowledge in tiller dynamics |
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State of knowledge in tiller dynamics |
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State of knowledge in tiller dynamics |
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State of knowledge in tiller dynamics |
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state of knowledge in tiller dynamics |
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University of Kentucky |
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2013 |
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http://hdl.handle.net/20.500.12123/11869 https://uknowledge.uky.edu/igc/22/2-1/3/ |
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oai:localhost:20.500.12123-118692022-05-12T16:06:40Z State of knowledge in tiller dynamics Matthew, Cory Agnusdei, Monica Graciela Assuero, Silvia Graciela Sbrissia, André F. Scheneiter, Jorge Omar Silva, Sila C. da Persistence Flowering Pastures Persistencia Floración Pastizales Pasturas Persistence of sown pastures is a concern for pastoral production worldwide. Fundamentally, when a pasture does not persist the problem can be expressed in terms of inadequate new tiller production or excessive tiller death. However, the collection of data to build an understanding of sward dynamics at this level is time consuming. Tiller survival diagrams are presented for a range of temperate and tropical grass species including Lolium perenne, Lolium multiflorum, Festuca arundinacea, Festuca pratensis, Phleum pratense, Bromus willdenowii, Cynodon dactylon, Brachiaria brizantha, Panicum maximum, Chloris gayana and Paspalum notatum. It is shown that each grass has a unique perennation strategy and accordingly unique strengths and weaknesses that confer persistence or lack of persistence in different situations. There is also confusion in extension circles about the trade-off between tiller size and tiller density and how to detect a suboptimal tiller density. Grass swards respond to high herbage mass by increase of tiller size and reduction in tiller density, but reduction in tiller density is often mistaken for sward decline. A distinctionmust be made between size/density compensation and sward decline. Increased understanding of sward dynamics at this level should help in the evolution of management practices that improve persistence on a range of grassland types. La persistencia de los pastos sembrados es una preocupación para la producción pastoril a nivel mundial. Fundamentalmente, cuando una pastura no persiste, el problema puede expresarse en términos de producción inadecuada de nuevos macollos o muerte excesiva de macollos. Sin embargo, la recopilación de datos para comprender la dinámica de los céspedes a este nivel requiere mucho tiempo. Se presentan diagramas de supervivencia de macollos para una variedad de especies de pastos templados y tropicales que incluyen Lolium perenne, Lolium multiflorum, Festuca arundinacea, Festuca pratensis, Phleum pratense, Bromus willdenowii, Cynodon dactylon, Brachiaria brizantha, Panicum maximum, Chloris gayana y Paspalum notatum. Se muestra que cada pasto tiene una estrategia de perennación única y, en consecuencia, fortalezas y debilidades únicas que le confieren persistencia o falta de persistencia en diferentes situaciones. También existe confusión en los círculos de extensión acerca de la compensación entre el tamaño de los retoños y la densidad de los retoños y cómo detectar una densidad de retoños subóptima. Las praderas de hierba responden a una gran masa de forraje mediante el aumento del tamaño de los macollos y la reducción de la densidad de los macollos, pero la reducción de la densidad de los macollos a menudo se confunde con la disminución del césped. Se debe hacer una distinción entre la compensación de tamaño/densidad y la disminución del césped. Una mayor comprensión de la dinámica de los pastos a este nivel debería ayudar en la evolución de las prácticas de gestión que mejoran la persistencia en una variedad de tipos de pastizales. Estación Experimental Agropecuaria Pergamino Fil: Matthew, Cory. Massey University. Institute of Agriculture and Environment; Nueva Zelandia Fil: Agnusdei, Monica Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Assuero, Silvia G. Universidad Nacional de Mar del Plata; Argentina Fil: Sbrissia, André F. Santa Catarina State University; Brasil Fil: Scheneiter, Jorge Omar. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; Argentina Fil: Silva, Sila C. da. Universidade de Sao Paulo; Brasil 2022-05-12T15:51:28Z 2022-05-12T15:51:28Z 2013 info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/11869 https://uknowledge.uky.edu/igc/22/2-1/3/ 978-1-74256-542-2 eng info:eu-repograntAgreement/INTA/PNPA-1126073/AR./Pasturas ecoeficientes y de bajo carbono en ganadería. info:eu-repo/semantics/openAccess application/pdf University of Kentucky Proceedings 22º International Grassland Congress – Uknowledge. College of Agriculture, Food and Enviroment. Plant and Soil, Sydney, 15-19 septiembre 2013. |