| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
|
Data corrente: |
01/08/1992 |
|
Data da última atualização: |
11/04/2024 |
|
Autoria: |
METSON, A. J.; SAUNDERS, W. M. H. |
|
Título: |
Seasonal variations in chemical composition of pasture. II. Nitrogen, sulphur, and soluble carbohydrate. |
|
Ano de publicação: |
1978 |
|
Fonte/Imprenta: |
New Zealand Journal Agricultural Research, v. 21, n. 2, p. 355-364, May, 1978. |
|
DOI: |
https://doi.org/10.1080/00288233.1978.10427420 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: Seasonal variations in pasture herbage for total nitrogen (Nt), total sulphur (St), the ntrogen/sulphur ratio ( (N/S)t), non-protein nitrogen (Nnp), total water-soluble carbohydrates (TWSC), and the Nt/TWSC ratio, were studied by monthly samplings at seven sites in the lower North Island. Trends in Nt were similar in grass and clover components of the pasture, although clover levels were generally higher than grass levels. Highest concentrations occurred in late autumn to early spring, and lowest in summer, although the summer minimum was much more evident in grass than in clover. Monthly fluctuations were similar in grasses and clovers, suggesting possible random effects from urinary return of grazing sheep. Seasonal variations in St were not pronounced, but levels in grasses were generally higher than those in the corresponding clovers, reflecting the greater tendency of grasses to accumulate sulphate-sulphur where the soil sulphur supply is not limiting. However, (N/S)t ratios ranged from 7 to 16 in grasses, and from 14 to 21 in clovers, suggesting that the sulphur supply may have been barely adequate at some sites. NnP levels were determined only in mixed herbages, and tended to follow Nt levels. Nup comprised 16–20% of Nt, with little variation between sites. TWSC levels varied considerably between sites, and from month to month, which was not unexpected for a constituent known to show wide diurnal and seasonal fluctuations. The mean levels showed some indication of a minimum in late summer to autumn, and a maximum in winter. The Nt/TWSC ratio was frequently above the reported danger level of 0.3 (for spring grass pastures in the semi-arid ranges of western U.S.A.), but its significance as an indicator of a grass tetany hazard under New Zealand conditions is not known. MenosAbstract: Seasonal variations in pasture herbage for total nitrogen (Nt), total sulphur (St), the ntrogen/sulphur ratio ( (N/S)t), non-protein nitrogen (Nnp), total water-soluble carbohydrates (TWSC), and the Nt/TWSC ratio, were studied by monthly samplings at seven sites in the lower North Island. Trends in Nt were similar in grass and clover components of the pasture, although clover levels were generally higher than grass levels. Highest concentrations occurred in late autumn to early spring, and lowest in summer, although the summer minimum was much more evident in grass than in clover. Monthly fluctuations were similar in grasses and clovers, suggesting possible random effects from urinary return of grazing sheep. Seasonal variations in St were not pronounced, but levels in grasses were generally higher than those in the corresponding clovers, reflecting the greater tendency of grasses to accumulate sulphate-sulphur where the soil sulphur supply is not limiting. However, (N/S)t ratios ranged from 7 to 16 in grasses, and from 14 to 21 in clovers, suggesting that the sulphur supply may have been barely adequate at some sites. NnP levels were determined only in mixed herbages, and tended to follow Nt levels. Nup comprised 16–20% of Nt, with little variation between sites. TWSC levels varied considerably between sites, and from month to month, which was not unexpected for a constituent known to show wide diurnal and seasonal fluctuations. The mean levels showed some indicat... Mostrar Tudo |
|
Thesagro: |
Composição Química; Pastagem. |
|
Thesaurus Nal: |
Chemical composition; Pastures; Plant nutrition. |
|
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
|
Marc: |
LEADER 02505naa a2200205 a 4500
001 1522093
005 2024-04-11
008 1978 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/00288233.1978.10427420$2DOI
100 1 $aMETSON, A. J.
245 $aSeasonal variations in chemical composition of pasture. II. Nitrogen, sulphur, and soluble carbohydrate.$h[electronic resource]
260 $c1978
520 $aAbstract: Seasonal variations in pasture herbage for total nitrogen (Nt), total sulphur (St), the ntrogen/sulphur ratio ( (N/S)t), non-protein nitrogen (Nnp), total water-soluble carbohydrates (TWSC), and the Nt/TWSC ratio, were studied by monthly samplings at seven sites in the lower North Island. Trends in Nt were similar in grass and clover components of the pasture, although clover levels were generally higher than grass levels. Highest concentrations occurred in late autumn to early spring, and lowest in summer, although the summer minimum was much more evident in grass than in clover. Monthly fluctuations were similar in grasses and clovers, suggesting possible random effects from urinary return of grazing sheep. Seasonal variations in St were not pronounced, but levels in grasses were generally higher than those in the corresponding clovers, reflecting the greater tendency of grasses to accumulate sulphate-sulphur where the soil sulphur supply is not limiting. However, (N/S)t ratios ranged from 7 to 16 in grasses, and from 14 to 21 in clovers, suggesting that the sulphur supply may have been barely adequate at some sites. NnP levels were determined only in mixed herbages, and tended to follow Nt levels. Nup comprised 16–20% of Nt, with little variation between sites. TWSC levels varied considerably between sites, and from month to month, which was not unexpected for a constituent known to show wide diurnal and seasonal fluctuations. The mean levels showed some indication of a minimum in late summer to autumn, and a maximum in winter. The Nt/TWSC ratio was frequently above the reported danger level of 0.3 (for spring grass pastures in the semi-arid ranges of western U.S.A.), but its significance as an indicator of a grass tetany hazard under New Zealand conditions is not known.
650 $aChemical composition
650 $aPastures
650 $aPlant nutrition
650 $aComposição Química
650 $aPastagem
700 1 $aSAUNDERS, W. M. H.
773 $tNew Zealand Journal Agricultural Research$gv. 21, n. 2, p. 355-364, May, 1978.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Pantanal. |
|
Data corrente: |
10/12/2013 |
|
Data da última atualização: |
10/12/2013 |
|
Tipo da produção científica: |
Resumo em Anais de Congresso |
|
Autoria: |
FIALHO, A. L. L.; SOUZA, M. B. de; SILVA, W. A. L. da; STERZA, F. de A. M.; NOGUEIRA, E.; KISCHEL, H. |
|
Afiliação: |
ANDRÉ LUIZ LEÃO FIALHO, UEMS; MIRELA BROCHADO DE SOUZA, UEMS; WILIAN APARECIDO LEITE DA SILVA, UEMS; FABIANA DE ANDRADE MELO STERZA, UEMS; ERIKLIS NOGUEIRA, CPAP; HENRIQUE KISCHEL, UEMS. |
|
Título: |
Influencia das condições climáticas sobre a viabilidade oocitária de fêmeas Girolando e Pantaneira. |
|
Ano de publicação: |
2013 |
|
Fonte/Imprenta: |
In: SIMPÓSIO SOBRE RECURSOS NATURAIS E SOCIOECONÔMICOS DO PANTANAL, 6.; EVENTO DE INICIAÇÃO CIENTÍFICA DO PANTANAL, 1., 2013, Corumbá, MS. Desafios e soluções para o Pantanal: resumos. Corumbá: Embrapa Pantanal, 2013. |
|
Idioma: |
Português |
|
Palavras-Chave: |
Embriões; In vitro. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/93757/1/R10.pdf
|
|
Marc: |
LEADER 00729nam a2200181 a 4500
001 1973425
005 2013-12-10
008 2013 bl uuuu u00u1 u #d
100 1 $aFIALHO, A. L. L.
245 $aInfluencia das condições climáticas sobre a viabilidade oocitária de fêmeas Girolando e Pantaneira.
260 $aIn: SIMPÓSIO SOBRE RECURSOS NATURAIS E SOCIOECONÔMICOS DO PANTANAL, 6.; EVENTO DE INICIAÇÃO CIENTÍFICA DO PANTANAL, 1., 2013, Corumbá, MS. Desafios e soluções para o Pantanal: resumos. Corumbá: Embrapa Pantanal$c2013
653 $aEmbriões
653 $aIn vitro
700 1 $aSOUZA, M. B. de
700 1 $aSILVA, W. A. L. da
700 1 $aSTERZA, F. de A. M.
700 1 $aNOGUEIRA, E.
700 1 $aKISCHEL, H.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pantanal (CPAP) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
