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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
08/05/1997 |
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Data da última atualização: |
14/07/2023 |
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Autoria: |
CRANSBERG, L. : McFARLANE, D. J. |
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Título: |
Can perennial pastures provide the basis for a sustainable farming system in southern Australia?. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
New Zealand Journal of Agricultural Research, v. 37, n. 3, p. 287-294, 1994. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Land degradation, associated with farming systems based on annual pastures and crops, is threatening the long?term viability of Australian agriculture. Perennial pastures could play a significant role in reducing some forms of land degradation i.e. dryland salinity, erosion, and soil structure decline. In terms of sustainability, the key differences between perennial and annual pastures relate to rooting depth and the water uptake pattern throughout the year. Deep?rooted perennials can use water when annual pastures are dead, recover leached nitrate (and reduce acidification), and can provide soil cover and root mass to restrict wind and water erosion. Deeply penetrating roots also create biopores and improve soil structure and drainage. In addition, problems normally associated with water repellency are reduced as perennials are not required to germinate each year. There is an urgent need to breed plants that can colonise hostile Australian subsoils characterised by high soil strength, acidity, and high concentrations of toxic elements. In terms of the four perennial grasses considered in this workshop, we believe that the deeper rooting habit of phalaris and tall fescue offer more scope for overcoming degradation than cocksfoot and perennial ryegrass. Plant breeders need to consider the considerable benefits of deep?rooted lines and lines which are able to colonise soils with hostile subsoils. |
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Palavras-Chave: |
Gramineas perenes; Habito de enraizamento; Perennial pasture; Sustentabilidade. |
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Thesagro: |
Erosão do Solo. |
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Thesaurus Nal: |
Forage production; Plant breeding; Sustainable agriculture. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02144naa a2200217 a 4500
001 1523582
005 2023-07-14
008 1994 bl uuuu u00u1 u #d
100 1 $aCRANSBERG, L. : McFARLANE, D. J.
245 $aCan perennial pastures provide the basis for a sustainable farming system in southern Australia?.$h[electronic resource]
260 $c1994
520 $aAbstract: Land degradation, associated with farming systems based on annual pastures and crops, is threatening the long?term viability of Australian agriculture. Perennial pastures could play a significant role in reducing some forms of land degradation i.e. dryland salinity, erosion, and soil structure decline. In terms of sustainability, the key differences between perennial and annual pastures relate to rooting depth and the water uptake pattern throughout the year. Deep?rooted perennials can use water when annual pastures are dead, recover leached nitrate (and reduce acidification), and can provide soil cover and root mass to restrict wind and water erosion. Deeply penetrating roots also create biopores and improve soil structure and drainage. In addition, problems normally associated with water repellency are reduced as perennials are not required to germinate each year. There is an urgent need to breed plants that can colonise hostile Australian subsoils characterised by high soil strength, acidity, and high concentrations of toxic elements. In terms of the four perennial grasses considered in this workshop, we believe that the deeper rooting habit of phalaris and tall fescue offer more scope for overcoming degradation than cocksfoot and perennial ryegrass. Plant breeders need to consider the considerable benefits of deep?rooted lines and lines which are able to colonise soils with hostile subsoils.
650 $aForage production
650 $aPlant breeding
650 $aSustainable agriculture
650 $aErosão do Solo
653 $aGramineas perenes
653 $aHabito de enraizamento
653 $aPerennial pasture
653 $aSustentabilidade
773 $tNew Zealand Journal of Agricultural Research$gv. 37, n. 3, p. 287-294, 1994.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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