| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Soja. |
|
Data corrente: |
12/04/2000 |
|
Data da última atualização: |
15/10/2004 |
|
Autoria: |
SOUZA, P. I. M.; SPEHAR, C. R.; FARIAS NETO, A. L.; MOREIRA, C. T. |
|
Título: |
Soybean crop in the brazilian savannah: breeding and evolution. |
|
Ano de publicação: |
1999 |
|
Fonte/Imprenta: |
In: WORLD SOYBEAN RESEARCH CONFERENCE, 6., 1999, Chicago. Proceedings: invited and contributed papers and posters. Chicago: University of Illinois / Soybean Research & Development Council, 1999. |
|
Páginas: |
p.498. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Soybean cultivation was first introduced in Southern Brazil, as a temperate zone crop, originated from high latitude. It is not surprising that first adapted varieties were of North American origin, such as, Bragg, Davis, Hardee, Lee and Hood. The area for soybean production in this part of the country was soon occupied and the only possible increase in cultivated land had to be in the tropics, especially in the savannah which were virtually waste land until the early 1970's. The main constraints for prompt expansion in grain crops were lack of adapted varieties to low latitudes, reduced soil fertility and insufficient infrastructure in the region. The Savannah is characterised by two seasons: rainy and dry; without extremes of temperature to soybeans and the amount of rain is adequate, despite of irregular distribution (dry spells). By the end of 1970's, new varieties started to be released to farmers in the region and in the late 1990's it became a major producer, responding for about 50% of national production. In the long run, when soil problems are overcome, the average yields are, in general, higher than in the traditional zone of the south. The presently cultivated area with annual crops is of 10 million hectares, 65% of wich covered by soybeans. This is only a small part of total savannah area (204 million ha). It is estimated that about 80 million ha are still waiting to be occupied for grain production. The key factor to turn this regions into a major soybean producer has been the acquisition of genotypes with long juvenile phase. Initially late types from the South were introduced in the savannah where they were reduced in yield and plant height. The first crosses were made in the Agronomic Research Institute of Campinas (IAC), using late flowering introductions like 'PI 240664', from Philippines, 'PI 159925', Santa Maria, From Peru. New mutants for lateness like 'PR 77-10011'from Bragg and 'Paranagoiana', from cultivar Parana, were recovered and included to increase the gene pool of crosses. The almost linear expansion of soybean cultivation in the savannah has been closely linked to acquisition of improved cultivars that respond for higher yields than pioneer varieties. 'BR/Emgopa-313', 'BR-9 Savanna', 'BRS-60 Celeste', 'BRS-55' Uirapuru', 'MG/BR 45 Conquista', 'FT Cristalina'and 'Vitoria'are among the outstanding performers. To consolidate the soybean expansion, on a sustainable basis in the savannah, new hurdles must be overcome, such as resistance to late diseases like the one caused by Colletrotrichum, and pests of recent outbreaks like cyst nematode and insects the new cultivars should also belong to different maturity groups. These favourable characteristics shall help to overcome the natural limitations of the region and allow diversification of grain production systems. MenosSoybean cultivation was first introduced in Southern Brazil, as a temperate zone crop, originated from high latitude. It is not surprising that first adapted varieties were of North American origin, such as, Bragg, Davis, Hardee, Lee and Hood. The area for soybean production in this part of the country was soon occupied and the only possible increase in cultivated land had to be in the tropics, especially in the savannah which were virtually waste land until the early 1970's. The main constraints for prompt expansion in grain crops were lack of adapted varieties to low latitudes, reduced soil fertility and insufficient infrastructure in the region. The Savannah is characterised by two seasons: rainy and dry; without extremes of temperature to soybeans and the amount of rain is adequate, despite of irregular distribution (dry spells). By the end of 1970's, new varieties started to be released to farmers in the region and in the late 1990's it became a major producer, responding for about 50% of national production. In the long run, when soil problems are overcome, the average yields are, in general, higher than in the traditional zone of the south. The presently cultivated area with annual crops is of 10 million hectares, 65% of wich covered by soybeans. This is only a small part of total savannah area (204 million ha). It is estimated that about 80 million ha are still waiting to be occupied for grain production. The key factor to turn this regions into a major soybean produ... Mostrar Tudo |
|
Palavras-Chave: |
Brasil; Soybean. |
|
Thesagro: |
Cerrado; Melhoramento; Soja. |
|
Thesaurus Nal: |
Brazil; breeding; savannas. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 03638naa a2200265 a 4500
001 1461715
005 2004-10-15
008 1999 bl uuuu u00u1 u #d
100 1 $aSOUZA, P. I. M.
245 $aSoybean crop in the brazilian savannah$bbreeding and evolution.
260 $c1999
300 $ap.498.
520 $aSoybean cultivation was first introduced in Southern Brazil, as a temperate zone crop, originated from high latitude. It is not surprising that first adapted varieties were of North American origin, such as, Bragg, Davis, Hardee, Lee and Hood. The area for soybean production in this part of the country was soon occupied and the only possible increase in cultivated land had to be in the tropics, especially in the savannah which were virtually waste land until the early 1970's. The main constraints for prompt expansion in grain crops were lack of adapted varieties to low latitudes, reduced soil fertility and insufficient infrastructure in the region. The Savannah is characterised by two seasons: rainy and dry; without extremes of temperature to soybeans and the amount of rain is adequate, despite of irregular distribution (dry spells). By the end of 1970's, new varieties started to be released to farmers in the region and in the late 1990's it became a major producer, responding for about 50% of national production. In the long run, when soil problems are overcome, the average yields are, in general, higher than in the traditional zone of the south. The presently cultivated area with annual crops is of 10 million hectares, 65% of wich covered by soybeans. This is only a small part of total savannah area (204 million ha). It is estimated that about 80 million ha are still waiting to be occupied for grain production. The key factor to turn this regions into a major soybean producer has been the acquisition of genotypes with long juvenile phase. Initially late types from the South were introduced in the savannah where they were reduced in yield and plant height. The first crosses were made in the Agronomic Research Institute of Campinas (IAC), using late flowering introductions like 'PI 240664', from Philippines, 'PI 159925', Santa Maria, From Peru. New mutants for lateness like 'PR 77-10011'from Bragg and 'Paranagoiana', from cultivar Parana, were recovered and included to increase the gene pool of crosses. The almost linear expansion of soybean cultivation in the savannah has been closely linked to acquisition of improved cultivars that respond for higher yields than pioneer varieties. 'BR/Emgopa-313', 'BR-9 Savanna', 'BRS-60 Celeste', 'BRS-55' Uirapuru', 'MG/BR 45 Conquista', 'FT Cristalina'and 'Vitoria'are among the outstanding performers. To consolidate the soybean expansion, on a sustainable basis in the savannah, new hurdles must be overcome, such as resistance to late diseases like the one caused by Colletrotrichum, and pests of recent outbreaks like cyst nematode and insects the new cultivars should also belong to different maturity groups. These favourable characteristics shall help to overcome the natural limitations of the region and allow diversification of grain production systems.
650 $aBrazil
650 $abreeding
650 $asavannas
650 $aCerrado
650 $aMelhoramento
650 $aSoja
653 $aBrasil
653 $aSoybean
700 1 $aSPEHAR, C. R.
700 1 $aFARIAS NETO, A. L.
700 1 $aMOREIRA, C. T.
773 $tIn: WORLD SOYBEAN RESEARCH CONFERENCE, 6., 1999, Chicago. Proceedings: invited and contributed papers and posters. Chicago: University of Illinois / Soybean Research & Development Council, 1999.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Soja (CNPSO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Pecuária Sul. |
|
Data corrente: |
13/11/2015 |
|
Data da última atualização: |
08/03/2016 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
FAJARDO, M.; MATTIAUDA, D. A.; MOTTA, G.; GENRO, T. C. M.; MEIKLE, A.; CARRIQUIRY, M.; CHILIBROSTE, P. |
|
Afiliação: |
M. FAJARDO, UNIVERSIDAD DE LA REPUBLICA; D. A. MATTIAUDA, UNIVERSIDAD DE LA REPUBLICA; G. MOTTA, UNIVERSIDAD DE LA REPUBLICA; TERESA CRISTINA MORAES GENRO, CPPSUL; A. MEIKLE, UNIVERSIDAD DE LA REPUBLICA; M. CARRIQUIRY, UNIVERSIDAD DE LA REPUBLICA; P. CHILIBROSTE, UNIVERSIDAD DE LA REPUBLICA. |
|
Título: |
Use of mixed rations with different access time to pastureland on productive responses of early lactation Holstein cows. |
|
Ano de publicação: |
2015 |
|
Fonte/Imprenta: |
Livestock Science, v. 181, p. 51-57, Nov. 2015. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The intensification of milk production has required the development of new feeding strategies such as the use of mixed rations either with or without access to grazing. The aim of this study was, to determine milk production and composition, body condition score (BCS), live weight (LW) and grazing behaviour of Holstein dairy cows subject to diets combining mixed rations and herbage during their first 10-wk of lactation (period 1). |
|
Thesagro: |
Dieta; Gado leiteiro; Nutrição animal; Pastagem; Pastejo. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01162naa a2200253 a 4500
001 2028527
005 2016-03-08
008 2015 bl uuuu u00u1 u #d
100 1 $aFAJARDO, M.
245 $aUse of mixed rations with different access time to pastureland on productive responses of early lactation Holstein cows.$h[electronic resource]
260 $c2015
520 $aThe intensification of milk production has required the development of new feeding strategies such as the use of mixed rations either with or without access to grazing. The aim of this study was, to determine milk production and composition, body condition score (BCS), live weight (LW) and grazing behaviour of Holstein dairy cows subject to diets combining mixed rations and herbage during their first 10-wk of lactation (period 1).
650 $aDieta
650 $aGado leiteiro
650 $aNutrição animal
650 $aPastagem
650 $aPastejo
700 1 $aMATTIAUDA, D. A.
700 1 $aMOTTA, G.
700 1 $aGENRO, T. C. M.
700 1 $aMEIKLE, A.
700 1 $aCARRIQUIRY, M.
700 1 $aCHILIBROSTE, P.
773 $tLivestock Science$gv. 181, p. 51-57, Nov. 2015.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
