Data/hora: 04/06/2024 22:46:01

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 26/07/1995
Data da última atualização: | 17/04/2009
Autoria: | HUTTON, E. M.
Título: | Australian research in pasture plant introduction and breeding. (a) The contribution of research (in plant introduction, plant nutrition, and legume bacteriology) to the development of Australia pastures.
Ano de publicação: | 1970
Fonte/Imprenta: | In: INTERNATIONAL GRASSLAND CONGRESS, 11., 1970, Brisbane. Proceedings. Brisbane: [s.n.] 1970. p.A1-A12.
Idioma: | Inglês
Conteúdo: | Australia's emergence as an important world producer of wool, meat, and dairy products would not have been possible without the upgrading of native pastures over extensive areas with introduced legumes and grasses and fertilizer, particularly superphosphate. the widespread adoption of improved pastures in southern Australia is being followed by accelerating pasture sowings in northern Australia now that suitable tropical cultivars and knowledge of their nutrient requiremnets are available. Of the present cultivars, there are 44 legumes and 23 grasses for temperate conditions and 23 legumes and 40 grasses for temperate conditions and 23 legumes and 40 grasses for the tropics and sub-tropics. Over half the cultivars, both temperate and tropical, have resulted from introduction and improvement work in the last 15 yeras. Because of the vital and continuing role of legume-based pastures in our animal production, it is likely that numbers of legume cultivars will continue to exceed grass in southern Australia and increase their proportion to grass in northern Australia. In future there will be more concentration on introduction and selecting grasses for their feeding value and response to nitrogen, particularly in northern Australia. Although it is becoming more difficult to introduce legumes and grasses which fit into the pastures ecosystem better than existing cultivars, introduction and field collection of pasture plants should bot be restricted. The challenge is still there to exploit the infinite natural plant variation in overseas countries, particularly in the genera and species which have been found valuble in Australia pastures. If the variants introduced cxannot be used directly in pastures they could be valuable in the breeding of better-adapted pasture plants which give a higher yield of digestible nutrients and animal products per ha. In any case, there are still vast areas, particularly in the Australian tropics, where variations in soil and climate demand a wide range of ecotypes in existing species and perhaps the use of completely new types such as fodder trees.
Palavras-Chave: | Fertilizer; Legume bacteriology; Native pasture.
Thesagro: | Fertilizante; Nutrição; Pastagem Nativa.
Thesaurus Nal: | Australia; nutrition; superphosphate.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (28726-1) - ADD - SP - -- - SP0416 -  - 0416 - DIS