| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
|
Data corrente: |
31/08/1993 |
|
Data da última atualização: |
31/08/1993 |
|
Autoria: |
MONKE, E. J.; FLUGGINS, L. F.; GALLOWAY, H. M.; FOSTER, G. R. |
|
Título: |
Field study of subsurface drainage on a slowly permeable soil. |
|
Ano de publicação: |
1967 |
|
Fonte/Imprenta: |
Transactions of the ASAE, p.573-576, 1967. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The readiness of a slowly permeable soil to drain was evaluated for replicated subsurface drains placed 25, 50, and 100 ft apart. The drains responded within a few hrs to the commencement of a discharge-producing storm and produced maximum discharge values quickly, after which long recession periods occurred. In general, the highest discharge occurred for drains which were placed farthest apart because of the likelihood of high antecedent moisture conditions. Percent-agewise, the difference between peak flow rates decreased as the magnitude of flow increased, suggesting that-when the soil becomes fully saturated these differences would be small. Peak rates could therefore be used to obtain an effecfive hydraulic conductivity value for the rational design of subsurface drainage systems, The response of crop production to different levels of drainage was evaluated form yield data and population stands. Corn yields were significantly different with respect to the spacing of the drains. Part of this difference wasdue to variation in corn population. In general, stands for the 25-ft spacing were higherthan those at either the 50 or 100-ft spacing. How much of the yield differences, if any, should beattributed as a response just to drainage as opposed to total moisture environment thoughout the entire growing season is unknown. Also before yield data can be used to justify a spacing criterion, the probability of the occurrence of yield-depressing drainage situations should be assessed. ... MenosThe readiness of a slowly permeable soil to drain was evaluated for replicated subsurface drains placed 25, 50, and 100 ft apart. The drains responded within a few hrs to the commencement of a discharge-producing storm and produced maximum discharge values quickly, after which long recession periods occurred. In general, the highest discharge occurred for drains which were placed farthest apart because of the likelihood of high antecedent moisture conditions. Percent-agewise, the difference between peak flow rates decreased as the magnitude of flow increased, suggesting that-when the soil becomes fully saturated these differences would be small. Peak rates could therefore be used to obtain an effecfive hydraulic conductivity value for the rational design of subsurface drainage systems, The response of crop production to different levels of drainage was evaluated form yield data and population stands. Corn yields were significantly different with respect to the spacing of the drains. Part of this difference wasdue to variation in corn population. In general, stands for the 25-ft spacing were higherthan those at either the 50 or 100-ft spacing. How much of the yield differences, if any, should beattributed as a response just to drainage as opposed to total moisture environment thoughout the entire growing season is unknown. Also before yield data can be used to justify a spacing criterion, the probability of the occurrence of yield-depressing drainage situations should be as... Mostrar Tudo |
|
Palavras-Chave: |
Drenos subterraneos; Flux; Fluxo; Permeable soil; Solo permeavel; Subterranean drain. |
|
Thesagro: |
Água; Drenagem; Solo. |
|
Thesaurus Nal: |
drainage; water. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02222naa a2200289 a 4500
001 1073578
005 1993-08-31
008 1967 bl --- 0-- u #d
100 1 $aMONKE, E. J.
245 $aField study of subsurface drainage on a slowly permeable soil.
260 $c1967
520 $aThe readiness of a slowly permeable soil to drain was evaluated for replicated subsurface drains placed 25, 50, and 100 ft apart. The drains responded within a few hrs to the commencement of a discharge-producing storm and produced maximum discharge values quickly, after which long recession periods occurred. In general, the highest discharge occurred for drains which were placed farthest apart because of the likelihood of high antecedent moisture conditions. Percent-agewise, the difference between peak flow rates decreased as the magnitude of flow increased, suggesting that-when the soil becomes fully saturated these differences would be small. Peak rates could therefore be used to obtain an effecfive hydraulic conductivity value for the rational design of subsurface drainage systems, The response of crop production to different levels of drainage was evaluated form yield data and population stands. Corn yields were significantly different with respect to the spacing of the drains. Part of this difference wasdue to variation in corn population. In general, stands for the 25-ft spacing were higherthan those at either the 50 or 100-ft spacing. How much of the yield differences, if any, should beattributed as a response just to drainage as opposed to total moisture environment thoughout the entire growing season is unknown. Also before yield data can be used to justify a spacing criterion, the probability of the occurrence of yield-depressing drainage situations should be assessed. ...
650 $adrainage
650 $awater
650 $aÁgua
650 $aDrenagem
650 $aSolo
653 $aDrenos subterraneos
653 $aFlux
653 $aFluxo
653 $aPermeable soil
653 $aSolo permeavel
653 $aSubterranean drain
700 1 $aFLUGGINS, L. F.
700 1 $aGALLOWAY, H. M.
700 1 $aFOSTER, G. R.
773 $tTransactions of the ASAE, p.573-576, 1967.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Agricultura Digital. |
|
Data corrente: |
03/01/2020 |
|
Data da última atualização: |
03/01/2020 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
BOLFE, E. L. |
|
Afiliação: |
EDSON LUIS BOLFE, CNPTIA, Unicamp. |
|
Título: |
Application of geotechnologies in the development of sustainable agriculture in Brazil. |
|
Ano de publicação: |
2019 |
|
Fonte/Imprenta: |
International Journal of Advanced Engineering Research and Science, v. 6, n. 12, p. 458-463, Dec. 2019. |
|
DOI: |
https://dx.doi.org/10.22161/ijaers.612.53 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract - The global consumption of food, water, fibers and energy is growing at exponential rates. Brazil has become a player of the world economy by becoming an important agricultural producer, and the country has technical and agronomic conditions to produce with quality and sustainability. However, there is a need for more site-specific natural resource management for judicious use of agricultural inputs to promote productivity and ecosystem services. The issue is particularly urgent, as population in rural areas have been migrating to cities for several reasons. Science may decisively contribute to agriculture with sustainability through management procedures that use remote sensing and precision farming. Remote sensing monitoring plays a critical role in supporting strategic decision-making, and to define private and public policies. New researches and innovations have changed rapidly, due to advances in information technology and geotechnology, supported by great data availability, new processing algorithms, data fusion, and developments in data mining. The present review paper aims to present actions of Brazilian Agricultural Research Corporation and collaborating organizations in the application of remote sensing and geospatial databases in the monitoring of Brazilian agriculture. |
|
Palavras-Chave: |
Bases de dados geoespaciais; Geospatial databases; Geotechnology; Geotecnologia; Recursos naturais. |
|
Thesagro: |
Agricultura; Desenvolvimento Rural; Desenvolvimento Sustentável; Sensoriamento Remoto. |
|
Thesaurus NAL: |
Agriculture; Natural resources; Remote sensing; Rural development. |
|
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/208051/1/AP-Application-geotechnologies.pdf
|
|
Marc: |
LEADER 02260naa a2200289 a 4500
001 2118018
005 2020-01-03
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://dx.doi.org/10.22161/ijaers.612.53$2DOI
100 1 $aBOLFE, E. L.
245 $aApplication of geotechnologies in the development of sustainable agriculture in Brazil.$h[electronic resource]
260 $c2019
520 $aAbstract - The global consumption of food, water, fibers and energy is growing at exponential rates. Brazil has become a player of the world economy by becoming an important agricultural producer, and the country has technical and agronomic conditions to produce with quality and sustainability. However, there is a need for more site-specific natural resource management for judicious use of agricultural inputs to promote productivity and ecosystem services. The issue is particularly urgent, as population in rural areas have been migrating to cities for several reasons. Science may decisively contribute to agriculture with sustainability through management procedures that use remote sensing and precision farming. Remote sensing monitoring plays a critical role in supporting strategic decision-making, and to define private and public policies. New researches and innovations have changed rapidly, due to advances in information technology and geotechnology, supported by great data availability, new processing algorithms, data fusion, and developments in data mining. The present review paper aims to present actions of Brazilian Agricultural Research Corporation and collaborating organizations in the application of remote sensing and geospatial databases in the monitoring of Brazilian agriculture.
650 $aAgriculture
650 $aNatural resources
650 $aRemote sensing
650 $aRural development
650 $aAgricultura
650 $aDesenvolvimento Rural
650 $aDesenvolvimento Sustentável
650 $aSensoriamento Remoto
653 $aBases de dados geoespaciais
653 $aGeospatial databases
653 $aGeotechnology
653 $aGeotecnologia
653 $aRecursos naturais
773 $tInternational Journal of Advanced Engineering Research and Science$gv. 6, n. 12, p. 458-463, Dec. 2019.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
