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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
19/08/1996 |
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Data da última atualização: |
10/04/2024 |
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Tipo da produção científica: |
Folder/Folheto/Cartilha |
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Autoria: |
SILVA, D. A. da; CARVALLO, H. O.; SILVA, A. de S.; GHEYI, H. R. |
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Afiliação: |
DINARTE AEDA DA SILVA, UNIVERSIDADE FEDERAL DO RIO GRANDE DO NORTE; HUGO O. CARVALLO, UNIVERSIDADE FEDERAL DA PARAÍBA; ADERALDO DE SOUZA SILVA, CPATSA; H. R. GHEYI, UNIVERSIDADE FEDERAL DA PARAÍBA. |
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Título: |
Irrigation by porous capsule method under hidrostatic pressure. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Petrolina: EMBRAPA-CPATSA, 1982. |
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Páginas: |
26 p. |
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Idioma: |
Inglês |
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Conteúdo: |
A field experiment was contucted at an Experiment Station of EMBRAPA in Pernambuco, Brazil with the objectives to evaluate the technical feasibility of irrigation by porous capsule under hydrostatic presure and to determine the effect of plant population on corn production. The experiment tested hydrostatic pressures of 0.35, 0.50 and 0.70 m and corn populations of 1, 4, 7, 10 and 13 plants/capsule with three replicates in a randomized block design. Each replicate consisted of 10 capsules installed at 0.25 m deep along the contour lines with absolutely no slope. The hydrostatic pressure significantly influenced water release from the capsule. Total water consumption varied from 7.96 to 10 cm/ha thereby indicating the extent of water saving. The hydrostatic pressure did no affect production significantly but the differences due to plant population were significant at 0.01 leyel. A second degree quadratic equation described satisfactorily the yield curve and estimated that 9 plants/capsule would give the best grain production. In the present wtudy 7 plantas/capsule gave the highest production with a water use efficiency of 2.0 kg/m3, which compared to conventional methods of irrigation is rather high. |
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Palavras-Chave: |
Capsula porosa; Irrigação não convencional. |
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Thesagro: |
Água; Irrigação; Pressão Hidrostática. |
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Thesaurus Nal: |
irrigation; water. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/179475/1/FL-01343.pdf
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Marc: |
LEADER 01847nam a2200241 a 4500
001 1133277
005 2024-04-10
008 1982 bl uuuu u0uu1 u #d
100 1 $aSILVA, D. A. da
245 $aIrrigation by porous capsule method under hidrostatic pressure.
260 $aPetrolina: EMBRAPA-CPATSA$c1982
300 $a26 p.
520 $aA field experiment was contucted at an Experiment Station of EMBRAPA in Pernambuco, Brazil with the objectives to evaluate the technical feasibility of irrigation by porous capsule under hydrostatic presure and to determine the effect of plant population on corn production. The experiment tested hydrostatic pressures of 0.35, 0.50 and 0.70 m and corn populations of 1, 4, 7, 10 and 13 plants/capsule with three replicates in a randomized block design. Each replicate consisted of 10 capsules installed at 0.25 m deep along the contour lines with absolutely no slope. The hydrostatic pressure significantly influenced water release from the capsule. Total water consumption varied from 7.96 to 10 cm/ha thereby indicating the extent of water saving. The hydrostatic pressure did no affect production significantly but the differences due to plant population were significant at 0.01 leyel. A second degree quadratic equation described satisfactorily the yield curve and estimated that 9 plants/capsule would give the best grain production. In the present wtudy 7 plantas/capsule gave the highest production with a water use efficiency of 2.0 kg/m3, which compared to conventional methods of irrigation is rather high.
650 $airrigation
650 $awater
650 $aÁgua
650 $aIrrigação
650 $aPressão Hidrostática
653 $aCapsula porosa
653 $aIrrigação não convencional
700 1 $aCARVALLO, H. O.
700 1 $aSILVA, A. de S.
700 1 $aGHEYI, H. R.
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Embrapa Semiárido (CPATSA) |
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