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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste. |
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Data corrente: |
13/07/2010 |
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Data da última atualização: |
13/06/2011 |
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Autoria: |
BARROS, L. C. G. |
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Título: |
Water use efficiency by corn and beans as affected by mulching rate. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
1986. |
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Páginas: |
137 f. |
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Idioma: |
Inglês |
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Notas: |
Dissertation (Doctor of Philosophy) - Utah State University, Logan. |
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Conteúdo: |
Field experiments were conducted to study the water-use and water-yield production function of corn and beans as influenced by straw mulch rates (), 3.5, 7.0, and 10.5 t/h) and irrigation. The original and a modified version of PLANTGRO model were used to determine the production function. Evapotranspiration (ET) was estimated from measurements of irrigation plus rainfall and soil water depletion. Evaporation (E) was estimated using a micro-lysimeter and Transformation (T) was estimated as ET minus E. Energy balance components were also measured. Despite a similar ET for mulched and bare soil for both crops, dry matter yields for corn and beans and grain yield for beans were higher for mulch than for bare treatments. Corn grain however decreased with increase in mulch rate. Higher transpiration probably contributed to higher yield under mulched condition, as compared to bare soil. Lower corn grain yield was associated with lower soil tempearature in mulch treated soil. Increased yields in a wet season (1984) for low irrigation for corn and niddle irrigation for beans resulted from mulch treatments as compared to bore soil. In a dry season (1985) beans yield was increased by mulch only at high water levels. The lowest mulch rate was as effective in improving yields, for booth crops, as the highest one. Beans yields were more responsive to mulching than corn. The PLANTGRO model gave good predictions of relative grain and dry matter yield for corn. For beans however it did not simulate the grain yield very well.(...) MenosField experiments were conducted to study the water-use and water-yield production function of corn and beans as influenced by straw mulch rates (), 3.5, 7.0, and 10.5 t/h) and irrigation. The original and a modified version of PLANTGRO model were used to determine the production function. Evapotranspiration (ET) was estimated from measurements of irrigation plus rainfall and soil water depletion. Evaporation (E) was estimated using a micro-lysimeter and Transformation (T) was estimated as ET minus E. Energy balance components were also measured. Despite a similar ET for mulched and bare soil for both crops, dry matter yields for corn and beans and grain yield for beans were higher for mulch than for bare treatments. Corn grain however decreased with increase in mulch rate. Higher transpiration probably contributed to higher yield under mulched condition, as compared to bare soil. Lower corn grain yield was associated with lower soil tempearature in mulch treated soil. Increased yields in a wet season (1984) for low irrigation for corn and niddle irrigation for beans resulted from mulch treatments as compared to bore soil. In a dry season (1985) beans yield was increased by mulch only at high water levels. The lowest mulch rate was as effective in improving yields, for booth crops, as the highest one. Beans yields were more responsive to mulching than corn. The PLANTGRO model gave good predictions of relative grain and dry matter yield for corn. For beans however it did not ... Mostrar Tudo |
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Palavras-Chave: |
Bean; Uso. |
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Thesagro: |
Água; Feijão; Irrigação; Manejo; Milho; Phaseolus Vulgaris; Zea Mays. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02151nam a2200241 a 4500
001 1857513
005 2011-06-13
008 1986 bl uuuu m 00u1 u #d
100 1 $aBARROS, L. C. G.
245 $aWater use efficiency by corn and beans as affected by mulching rate.
260 $a1986.$c1986
300 $a137 f.
500 $aDissertation (Doctor of Philosophy) - Utah State University, Logan.
520 $aField experiments were conducted to study the water-use and water-yield production function of corn and beans as influenced by straw mulch rates (), 3.5, 7.0, and 10.5 t/h) and irrigation. The original and a modified version of PLANTGRO model were used to determine the production function. Evapotranspiration (ET) was estimated from measurements of irrigation plus rainfall and soil water depletion. Evaporation (E) was estimated using a micro-lysimeter and Transformation (T) was estimated as ET minus E. Energy balance components were also measured. Despite a similar ET for mulched and bare soil for both crops, dry matter yields for corn and beans and grain yield for beans were higher for mulch than for bare treatments. Corn grain however decreased with increase in mulch rate. Higher transpiration probably contributed to higher yield under mulched condition, as compared to bare soil. Lower corn grain yield was associated with lower soil tempearature in mulch treated soil. Increased yields in a wet season (1984) for low irrigation for corn and niddle irrigation for beans resulted from mulch treatments as compared to bore soil. In a dry season (1985) beans yield was increased by mulch only at high water levels. The lowest mulch rate was as effective in improving yields, for booth crops, as the highest one. Beans yields were more responsive to mulching than corn. The PLANTGRO model gave good predictions of relative grain and dry matter yield for corn. For beans however it did not simulate the grain yield very well.(...)
650 $aÁgua
650 $aFeijão
650 $aIrrigação
650 $aManejo
650 $aMilho
650 $aPhaseolus Vulgaris
650 $aZea Mays
653 $aBean
653 $aUso
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Embrapa Agropecuária Oeste (CPAO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
04/01/2012 |
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Data da última atualização: |
23/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
VIEIRA JÚNIOR, L. C.; CABRAL, L. da S.; ZERVOUDAKIS, J. T.; ABREU, J. G. de; SOUZA, A. L. de; MORENZ, M. J. F. |
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Afiliação: |
LUIZ CARLOS VIEIRA JÚNIOR, UNESP; LUCIANO DA SILVA CABRAL, UFMT; JOANIS TILEMAHOS ZERVOUDAKIS, UFMT; JOADIL GONÇALVES DE ABREU, UFMT; ALEXANDRE LIMA DE SOUZA; MIRTON JOSE FROTA MORENZ, CNPGL. |
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Título: |
Ingestive behavior and performance of female lambs grazing on Marandu palisadegrass under different stocking rates. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v. 40, n. 11, p. 2359-2363, 2011. |
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DOI: |
https://doi.org/10.1590/S1516-35982011001100011 |
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Idioma: |
Inglês |
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Conteúdo: |
The ingestive behavior and performance of female lambs grazing on Marandu pasture submitted to different stocking rates during the rainy and transition season were evaluated. The experimental area with 4,500 m² was divided into 45 paddocks of 100 m². Twenty-seven Santa Ines female lambs (purebred) with 4 months age and 22 kg of initial body weight were distributed in a completely randomized design, with nine replicates. Lambs were divided into 9 groups with the same initial weight and submitted to three stocking rates: 2, 3 and 4 lambs/paddock, which corresponded to 40, 60 and 80 lambs/ha, respectively. Each group of animals had a module of five paddocks, managed on intermittent grazing system, with 7 days of occupation and 28 d of rest. Increase on time grazing and reduction on time ruminating and resting were observed as stocking rates increased. There was 14% raise in time grazing and 41% decline on time resting by lambs subjected to the highest stocking rate compared with those in the lower stocking rate. The number of animals/ha promoted linear effect on average daily gain, which was higher for animals in the lowest stocking rate of 90 g/d. For gain per area, the best result was obtained with 60 animals/ha featuring an average value of 426 kg/ha. |
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Palavras-Chave: |
Gain per area; Resting. |
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Thesaurus NAL: |
average daily gain; grazing; rumination; sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/51695/1/Artigo-meta-2011-RevBZ-Mirton.pdf
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Marc: |
LEADER 02105naa a2200265 a 4500
001 1911639
005 2023-01-23
008 2011 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S1516-35982011001100011$2DOI
100 1 $aVIEIRA JÚNIOR, L. C.
245 $aIngestive behavior and performance of female lambs grazing on Marandu palisadegrass under different stocking rates.$h[electronic resource]
260 $c2011
520 $aThe ingestive behavior and performance of female lambs grazing on Marandu pasture submitted to different stocking rates during the rainy and transition season were evaluated. The experimental area with 4,500 m² was divided into 45 paddocks of 100 m². Twenty-seven Santa Ines female lambs (purebred) with 4 months age and 22 kg of initial body weight were distributed in a completely randomized design, with nine replicates. Lambs were divided into 9 groups with the same initial weight and submitted to three stocking rates: 2, 3 and 4 lambs/paddock, which corresponded to 40, 60 and 80 lambs/ha, respectively. Each group of animals had a module of five paddocks, managed on intermittent grazing system, with 7 days of occupation and 28 d of rest. Increase on time grazing and reduction on time ruminating and resting were observed as stocking rates increased. There was 14% raise in time grazing and 41% decline on time resting by lambs subjected to the highest stocking rate compared with those in the lower stocking rate. The number of animals/ha promoted linear effect on average daily gain, which was higher for animals in the lowest stocking rate of 90 g/d. For gain per area, the best result was obtained with 60 animals/ha featuring an average value of 426 kg/ha.
650 $aaverage daily gain
650 $agrazing
650 $arumination
650 $asheep
653 $aGain per area
653 $aResting
700 1 $aCABRAL, L. da S.
700 1 $aZERVOUDAKIS, J. T.
700 1 $aABREU, J. G. de
700 1 $aSOUZA, A. L. de
700 1 $aMORENZ, M. J. F.
773 $tRevista Brasileira de Zootecnia$gv. 40, n. 11, p. 2359-2363, 2011.
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