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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
13/04/2000 |
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Data da última atualização: |
15/10/2004 |
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Autoria: |
NEUMAIER, N.; FARIAS, J. R. B.; NEPOMUCENO, A. L.; QUEIROGA, J. M. |
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Título: |
Mobile rain shelters for field studies on drought in soybean and other crops. |
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Ano de publicação: |
1999 |
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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. |
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Páginas: |
p.576. |
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Idioma: |
Inglês |
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Conteúdo: |
The low availability on the market and the high prices of equipment for controlling rainfall in field experiments are considerable constraints for the development of research on drought in crops. To overcome this, a system of mobile rain shelters built as an Aluminum structure covered by transparent fiberglass corrugated sheaths was development. The shelters move, at speed of 12.5 m/min, on two steel rails 22.9 m long through a toothed bar connected to 1.0 hp stationary eletric motors switched by a panel of relays linked to a rainfall sensor device. Each shelter covers an area 10 m long by 6.6m wide (66 m2). A contiguous additional area of the same size is used as parking space. The Aluminum structure is adjustable to heights of 1.3 and 2.2 m from the soil surface, allowing its use for both short crops (e.g. soybean and wheat) and tall crops (e.g. corn and sunflower). The rainfall sensor device was also developed and built with PVC tubes and connections. Internally, it has a water deposit, two drains, a float, a lever, and an eletrics wich. Externally, it has a rainfall collector (7.2m2). When the device is filled with 200 ml of water the internal float rises and the lever turns on the switch that starts up the electric motors driving the shelters to cover the plots. As the shelter reaches the end of the rails, it activates a stop switch opening the circuit. As rainfall continues the water deposit of rainfall sensor device is kept full, and the excess water is drained throught a 3/4" drain pipe. When the rain stops, the water inside the device slowly leaks out through a smaller drain (internal of 2mm), the float descends activating another swith starting up the eletric motors in reverse mode driving the shelters to uncover the plots. The whole system has been working fine fine for two years. However, improvements can still be made in water drainage from the shelters (gutters) and in avoidance of lateral soil water infiltration from adjacent areas. MenosThe low availability on the market and the high prices of equipment for controlling rainfall in field experiments are considerable constraints for the development of research on drought in crops. To overcome this, a system of mobile rain shelters built as an Aluminum structure covered by transparent fiberglass corrugated sheaths was development. The shelters move, at speed of 12.5 m/min, on two steel rails 22.9 m long through a toothed bar connected to 1.0 hp stationary eletric motors switched by a panel of relays linked to a rainfall sensor device. Each shelter covers an area 10 m long by 6.6m wide (66 m2). A contiguous additional area of the same size is used as parking space. The Aluminum structure is adjustable to heights of 1.3 and 2.2 m from the soil surface, allowing its use for both short crops (e.g. soybean and wheat) and tall crops (e.g. corn and sunflower). The rainfall sensor device was also developed and built with PVC tubes and connections. Internally, it has a water deposit, two drains, a float, a lever, and an eletrics wich. Externally, it has a rainfall collector (7.2m2). When the device is filled with 200 ml of water the internal float rises and the lever turns on the switch that starts up the electric motors driving the shelters to cover the plots. As the shelter reaches the end of the rails, it activates a stop switch opening the circuit. As rainfall continues the water deposit of rainfall sensor device is kept full, and the excess water is drained throu... Mostrar Tudo |
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Palavras-Chave: |
Abrigo movel; Brasil; Instrumentacao agricola; Mobile rain shelters; Soybean. |
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Thesagro: |
Climatologia; Seca; Soja. |
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Thesaurus Nal: |
Brazil; drought; equipment; meteorological instruments. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02938naa a2200313 a 4500
001 1461732
005 2004-10-15
008 1999 bl uuuu u00u1 u #d
100 1 $aNEUMAIER, N.
245 $aMobile rain shelters for field studies on drought in soybean and other crops.
260 $c1999
300 $ap.576.
520 $aThe low availability on the market and the high prices of equipment for controlling rainfall in field experiments are considerable constraints for the development of research on drought in crops. To overcome this, a system of mobile rain shelters built as an Aluminum structure covered by transparent fiberglass corrugated sheaths was development. The shelters move, at speed of 12.5 m/min, on two steel rails 22.9 m long through a toothed bar connected to 1.0 hp stationary eletric motors switched by a panel of relays linked to a rainfall sensor device. Each shelter covers an area 10 m long by 6.6m wide (66 m2). A contiguous additional area of the same size is used as parking space. The Aluminum structure is adjustable to heights of 1.3 and 2.2 m from the soil surface, allowing its use for both short crops (e.g. soybean and wheat) and tall crops (e.g. corn and sunflower). The rainfall sensor device was also developed and built with PVC tubes and connections. Internally, it has a water deposit, two drains, a float, a lever, and an eletrics wich. Externally, it has a rainfall collector (7.2m2). When the device is filled with 200 ml of water the internal float rises and the lever turns on the switch that starts up the electric motors driving the shelters to cover the plots. As the shelter reaches the end of the rails, it activates a stop switch opening the circuit. As rainfall continues the water deposit of rainfall sensor device is kept full, and the excess water is drained throught a 3/4" drain pipe. When the rain stops, the water inside the device slowly leaks out through a smaller drain (internal of 2mm), the float descends activating another swith starting up the eletric motors in reverse mode driving the shelters to uncover the plots. The whole system has been working fine fine for two years. However, improvements can still be made in water drainage from the shelters (gutters) and in avoidance of lateral soil water infiltration from adjacent areas.
650 $aBrazil
650 $adrought
650 $aequipment
650 $ameteorological instruments
650 $aClimatologia
650 $aSeca
650 $aSoja
653 $aAbrigo movel
653 $aBrasil
653 $aInstrumentacao agricola
653 $aMobile rain shelters
653 $aSoybean
700 1 $aFARIAS, J. R. B.
700 1 $aNEPOMUCENO, A. L.
700 1 $aQUEIROGA, J. M.
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.
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Registro original: |
Embrapa Soja (CNPSO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
05/12/2005 |
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Data da última atualização: |
20/12/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
FERREIRA, A. S.; GOMES, S. E. S.; VALENTIM, J. F. |
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Afiliação: |
ALIEDSON SAMPAIO FERREIRA, Universidade Federal do Ace (Ufac); SELVA EULUANA SANTOS GOMES, Universidade Federal do Acre (Ufac); JUDSON FERREIRA VALENTIM, CPAF-AC. |
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Título: |
Produtividade e valor nutritivo da forragem produzida por acessos de Panicum spp. nas condições ambientais do Acre. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA PIBIC/CNPq/UFAC, 13., 2004, Rio Branco, AC. Anais... Rio Branco, AC: Ufac, 2004. |
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Páginas: |
1 p. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
Este trabalho teve o objetivo de comparar a produtividade e o valor nutritivo de 23 acessos e cultivares de Panicum spp. nas condições ambientais do Acre. |
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Palavras-Chave: |
Acre; Amazonia Occidental; Amazônia Ocidental; Embrapa Acre; Factores ambientales; Granjas de demonstración; Green panic grass; Guinea grass; Pastos forrajeros; Rendimento del forrage; Rio Branco (AC); Western Amazon. |
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Thesagro: |
Campo Experimental; Capim Colonião; Condição Ambiental; Gramínea Forrageira; Panicum Maximum; Rendimento; Valor Nutritivo. |
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Thesaurus NAL: |
Demonstration farms; Environmental factors; Forage grasses; Forage yield; Megathyrsus maximus; Nutritive value. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/503297/1/12125.pdf
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Marc: |
LEADER 01552nam a2200445 a 4500
001 1503297
005 2023-12-20
008 2004 bl uuuu u00u1 u #d
100 1 $aFERREIRA, A. S.
245 $aProdutividade e valor nutritivo da forragem produzida por acessos de Panicum spp. nas condições ambientais do Acre.$h[electronic resource]
260 $aIn: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA PIBIC/CNPq/UFAC, 13., 2004, Rio Branco, AC. Anais... Rio Branco, AC: Ufac$c2004
300 $a1 p.$c1 CD-ROM.
520 $aEste trabalho teve o objetivo de comparar a produtividade e o valor nutritivo de 23 acessos e cultivares de Panicum spp. nas condições ambientais do Acre.
650 $aDemonstration farms
650 $aEnvironmental factors
650 $aForage grasses
650 $aForage yield
650 $aMegathyrsus maximus
650 $aNutritive value
650 $aCampo Experimental
650 $aCapim Colonião
650 $aCondição Ambiental
650 $aGramínea Forrageira
650 $aPanicum Maximum
650 $aRendimento
650 $aValor Nutritivo
653 $aAcre
653 $aAmazonia Occidental
653 $aAmazônia Ocidental
653 $aEmbrapa Acre
653 $aFactores ambientales
653 $aGranjas de demonstración
653 $aGreen panic grass
653 $aGuinea grass
653 $aPastos forrajeros
653 $aRendimento del forrage
653 $aRio Branco (AC)
653 $aWestern Amazon
700 1 $aGOMES, S. E. S.
700 1 $aVALENTIM, J. F.
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Embrapa Acre (CPAF-AC) |
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