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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
25/06/1996 |
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Data da última atualização: |
05/01/2012 |
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Autoria: |
SILVA, E. M. da. |
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Título: |
Analysis of furrow irrigation uniformity as affected by furruw spacing. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Arizona: The University of Arizona, 1990. |
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Volume: |
2 v. |
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Páginas: |
449p. |
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Idioma: |
Inglês |
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Notas: |
Tese Doutorado. |
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Conteúdo: |
This research examines the effects of furrow spacing on irrigation uniformity and efficiency. Laboratory and field experiments were conducted to obtain information on soil physical characteristics, furrow infiltration and water advance data in order to validate the theoretical results. A furrow infiltration model based on Richards' equation and a finite element technique is developed and used to predict infiltrated depths in the transverse and longitudinal directions relative to the furrow centerline and furrow inlet, respectively. The model predicted measured furrow infiltration in the field from the third irrigation but failed to do so for the first and second irrigations. Simulations of furrow irrigation in a hypothetical soil with various furrow spacingsshowed that cumulative infiltration is not affected by furrow spacing until the lateral wetting front reaches the imaginary vertical boundary located midway between two furrows. An analysis of uniformity and efficiency from predicted water distribution profiles from field irrigated furrows are conclusive in that the use of longitudinal water distribution profile alone is not enough to assess the performance of furrow irrigation. The transverse distribution of infiltrated depths which is a function of furrow spacing must be included in the analysis. |
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Palavras-Chave: |
Uniformidade. |
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Thesagro: |
Irrigação por Sulco. |
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Thesaurus Nal: |
furrow irrigation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01819nam a2200181 a 4500
001 1077587
005 2012-01-05
008 1990 bl uuuu m 00u1 u #d
100 1 $aSILVA, E. M. da
245 $aAnalysis of furrow irrigation uniformity as affected by furruw spacing.
260 $aArizona: The University of Arizona$c1990
300 $a449p. 2 v.
490 $v2 v.
500 $aTese Doutorado.
520 $aThis research examines the effects of furrow spacing on irrigation uniformity and efficiency. Laboratory and field experiments were conducted to obtain information on soil physical characteristics, furrow infiltration and water advance data in order to validate the theoretical results. A furrow infiltration model based on Richards' equation and a finite element technique is developed and used to predict infiltrated depths in the transverse and longitudinal directions relative to the furrow centerline and furrow inlet, respectively. The model predicted measured furrow infiltration in the field from the third irrigation but failed to do so for the first and second irrigations. Simulations of furrow irrigation in a hypothetical soil with various furrow spacingsshowed that cumulative infiltration is not affected by furrow spacing until the lateral wetting front reaches the imaginary vertical boundary located midway between two furrows. An analysis of uniformity and efficiency from predicted water distribution profiles from field irrigated furrows are conclusive in that the use of longitudinal water distribution profile alone is not enough to assess the performance of furrow irrigation. The transverse distribution of infiltrated depths which is a function of furrow spacing must be included in the analysis.
650 $afurrow irrigation
650 $aIrrigação por Sulco
653 $aUniformidade
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Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
30/11/2015 |
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Data da última atualização: |
27/05/2022 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CASTRO, V. C. G.; SANTOS, G. R.; FERNANDES, P. C. C.; MARTORANO, L. G.; LUCAS, R. C.; BARROS, K. K. da S.; MONTEIRO, S. do N.; NAHUM, B. S.; ARAÚJO, G. S. |
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Afiliação: |
Vinícius C. G. Castro, GRADUANDO UFRA; Gabriel R. Santos, GRADUANDO UFRA; PAULO CAMPOS CHRISTO FERNANDES, CPAC; LUCIETA GUERREIRO MARTORANO, CPATU; Ronaldo C. Lucas, PÓS-DOUTORANDO CENA/USP; Karen K. da S. Barros, GRADUANDA UFRA; Samanta do N. Monteiro, GRADUANDA UFRA; BENJAMIM DE SOUZA NAHUM, CPATU; Geisielly S. Araújo, PÓS-GRADUANDO UFPA. |
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Título: |
Fração sólida da digesta de animais suplementados com farelo da palma de óleo e possíveis efeitos de variáveis agrometeorológicas. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA PARA O PROGRESSO DA CIÊNCIA, 67., 2015, São Carlos, SP. Resumos... São Paulo: SBPC, 2015. |
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Idioma: |
Português |
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Palavras-Chave: |
Alimentação animal; Ruminantes. |
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Thesagro: |
Nutrição Animal; Radiação Solar. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/134315/1/Fracao.pdf
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Marc: |
LEADER 00873nam a2200241 a 4500
001 2030008
005 2022-05-27
008 2015 bl uuuu u00u1 u #d
100 1 $aCASTRO, V. C. G.
245 $aFração sólida da digesta de animais suplementados com farelo da palma de óleo e possíveis efeitos de variáveis agrometeorológicas.$h[electronic resource]
260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA PARA O PROGRESSO DA CIÊNCIA, 67., 2015, São Carlos, SP. Resumos... São Paulo: SBPC$c2015
650 $aNutrição Animal
650 $aRadiação Solar
653 $aAlimentação animal
653 $aRuminantes
700 1 $aSANTOS, G. R.
700 1 $aFERNANDES, P. C. C.
700 1 $aMARTORANO, L. G.
700 1 $aLUCAS, R. C.
700 1 $aBARROS, K. K. da S.
700 1 $aMONTEIRO, S. do N.
700 1 $aNAHUM, B. S.
700 1 $aARAÚJO, G. S.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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