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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
26/04/2023 |
Data da última atualização: |
26/04/2023 |
Autoria: |
JONES, R. J. |
Título: |
Nitrogen rate and stocking rate effects on steer gains from grazed irrigated pangola grass in the Ord Valley, Western Australia. |
Ano de publicação: |
1990 |
Fonte/Imprenta: |
Australian Journal of Experimental Agriculture, v. 30, n. 5, p. 599-605, 1990. |
DOI: |
https://doi.org/10.1071/EA990059 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Annual liveweight gain of steers grazing flood-irrigated, fertilised pangola grass in the Ord Valley, Western Australia, was modelled as a function of nitrogen rate (90-350 kg/ha) and stocking rate (5.2-12.6 steers/ha). Steer gains decreased linearly with increasing stocking rate (SR) at each nitrogen rate (NR). Increasing NR resulted in higher steer gains, particularly at the low levels of SR. The model predicted an increase in the slope (b values) of the linear relations between steer gains and SR with an increase in NR. As a consequence, SR for maximum gain/ha.year only varied between 6 and 7 steers/ha within the NR used. Responses to SR and NR for gains/ha were both quadratic, and the model predicted a maximum gain of 1266 kg/ha when SR was 6.2 steers/ha and NR was 420 kg/ha.year. Within the experimental range, maximum gain was 1233 kg/ha when SR was 6.6 steers/ha and NR was 350 kg/ha.year. Steer gain varied seasonally, even in this tropical, irrigated environment. Gains were highest in January-March and lowest in June-July. Increasing stocking rate had the greatest depressing effect on liveweight gain during the cool season with b values, for the relation between steer gain and stocking rate at the 220 kg N rate, varying from -1 g/day in November to -94 g/day per unit of SR in July. |
Thesaurus Nal: |
Bullocks; Cattle. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 01849naa a2200157 a 4500 001 2153390 005 2023-04-26 008 1990 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1071/EA990059$2DOI 100 1 $aJONES, R. J. 245 $aNitrogen rate and stocking rate effects on steer gains from grazed irrigated pangola grass in the Ord Valley, Western Australia. 260 $c1990 520 $aAbstract: Annual liveweight gain of steers grazing flood-irrigated, fertilised pangola grass in the Ord Valley, Western Australia, was modelled as a function of nitrogen rate (90-350 kg/ha) and stocking rate (5.2-12.6 steers/ha). Steer gains decreased linearly with increasing stocking rate (SR) at each nitrogen rate (NR). Increasing NR resulted in higher steer gains, particularly at the low levels of SR. The model predicted an increase in the slope (b values) of the linear relations between steer gains and SR with an increase in NR. As a consequence, SR for maximum gain/ha.year only varied between 6 and 7 steers/ha within the NR used. Responses to SR and NR for gains/ha were both quadratic, and the model predicted a maximum gain of 1266 kg/ha when SR was 6.2 steers/ha and NR was 420 kg/ha.year. Within the experimental range, maximum gain was 1233 kg/ha when SR was 6.6 steers/ha and NR was 350 kg/ha.year. Steer gain varied seasonally, even in this tropical, irrigated environment. Gains were highest in January-March and lowest in June-July. Increasing stocking rate had the greatest depressing effect on liveweight gain during the cool season with b values, for the relation between steer gain and stocking rate at the 220 kg N rate, varying from -1 g/day in November to -94 g/day per unit of SR in July. 650 $aBullocks 650 $aCattle 773 $tAustralian Journal of Experimental Agriculture$gv. 30, n. 5, p. 599-605, 1990.
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Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
Biblioteca(s): |
Embrapa Agroindústria Tropical; Embrapa Hortaliças. |
Data corrente: |
12/09/2002 |
Data da última atualização: |
03/08/2011 |
Autoria: |
VIANA, F. M. P.; SANTOS, A. A. dos; CARDOSO, J. E.; FREIRE, F. das C. O.; LOPES, C. A. |
Título: |
Surto de mancha-aquosa em frutos de melão nos Estados do Ceará e do Rio Grande do Norte: recomendações preliminares de controle. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
Fortaleza: Embrapa Agroindústria Tropical, 2000. |
Páginas: |
4 p. |
Série: |
(Embrapa Agroindústria Tropical. Comunicado Técnico, 50). |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Ceará; Detecção; Diseases; Melon; Rio Grande do Norte. |
Thesagro: |
Cucumis Melo; Doença; Melão. |
Thesaurus NAL: |
Brazil; detection. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/33801/1/Ct-050.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPH/23473/1/cot_50.pdf
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Marc: |
LEADER 00877nam a2200301 a 4500 001 1663966 005 2011-08-03 008 2000 bl uuuu u0uu1 u #d 100 1 $aVIANA, F. M. P. 245 $aSurto de mancha-aquosa em frutos de melão nos Estados do Ceará e do Rio Grande do Norte$brecomendações preliminares de controle. 260 $aFortaleza: Embrapa Agroindústria Tropical$c2000 300 $a4 p. 490 $a(Embrapa Agroindústria Tropical. Comunicado Técnico, 50). 650 $aBrazil 650 $adetection 650 $aCucumis Melo 650 $aDoença 650 $aMelão 653 $aBrasil 653 $aCeará 653 $aDetecção 653 $aDiseases 653 $aMelon 653 $aRio Grande do Norte 700 1 $aSANTOS, A. A. dos 700 1 $aCARDOSO, J. E. 700 1 $aFREIRE, F. das C. O. 700 1 $aLOPES, C. A.
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