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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
27/07/1993 |
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Data da última atualização: |
07/10/2004 |
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Autoria: |
LEWIS, J. A. |
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Afiliação: |
The Agricultural Research Station, Northern Division, Thinnavali, Jaffna, Sri Lanka. |
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Título: |
Irrigated soybeans and the production of other legumes on the latosolsof Sri Lanka. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
In: CONFERENCE ON IRRIGATED SOYBEAN PRODUCTION IN ARID IN AND SEMI-ARID REGIONS, 1979, Cairo. Proceedings. Urbana-Champaign : INTSOY / University of Illinois, 1981. p.86-91. (INTSOY. Series, 20). |
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Idioma: |
Inglês |
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Notas: |
Ver trabalho preliminar no PC 3730. |
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Conteúdo: |
This paper reports on the irrigation needs of soybeans when grown on latosols in Sri Lanka. High yields were obtained with irrigation, ranging from 3,000 to 6,000 kg/ha on research plots. In farmer's fields, yields averaged 2,000 to 2,500 kg/ha. Irrigation is from groundwater, sothe exact water requirements at different stages of crop production must be determined lysimetry experiments were conducted to determine the rate of evapotranspiration (ET). Potential evapotranspiration (ETpot)was computed using the penman equation. Evaporation from the class A pan (E O) was monitored. The following values were recorded at the major stages of development: early growth stage, ET/ E O = 1; flowering stage, ET/E O = 1.1; pod-development stage, ET/E O = 1.15; and bean-filling stage, ET/E O = 1.2. Hence, yields may be adversely affected if the crop is stressed during the latter part of pod development and during the bean-filling stage. To study soybean response under different water availability in the soil, an experiment was conducted, irrigating soybeans at three levels of water stress: 0.26 to 0.33 bars of mercury, 0.39 to 0.46 bars, and 0.52 to 0.59 bars. The experiment is still in the field, so conclusions about pod-size development and yields cannot be made. However, the results to date indicate that at the highest stress (0.52 to 0.59 bars), pod development is advanced and less vegetative growth occurs. Potentially, the acreage of soybeans as an alternate crop on the latosols of the northwest regions of Sri Lanka MenosThis paper reports on the irrigation needs of soybeans when grown on latosols in Sri Lanka. High yields were obtained with irrigation, ranging from 3,000 to 6,000 kg/ha on research plots. In farmer's fields, yields averaged 2,000 to 2,500 kg/ha. Irrigation is from groundwater, sothe exact water requirements at different stages of crop production must be determined lysimetry experiments were conducted to determine the rate of evapotranspiration (ET). Potential evapotranspiration (ETpot)was computed using the penman equation. Evaporation from the class A pan (E O) was monitored. The following values were recorded at the major stages of development: early growth stage, ET/ E O = 1; flowering stage, ET/E O = 1.1; pod-development stage, ET/E O = 1.15; and bean-filling stage, ET/E O = 1.2. Hence, yields may be adversely affected if the crop is stressed during the latter part of pod development and during the bean-filling stage. To study soybean response under different water availability in the soil, an experiment was conducted, irrigating soybeans at three levels of water stress: 0.26 to 0.33 bars of mercury, 0.39 to 0.46 bars, and 0.52 to 0.59 bars. The experiment is still in the field, so conclusions about pod-size development and yields cannot be made. However, the results to date indicate that at the highest stress (0.52 to 0.59 bars), pod development is advanced and less vegetative growth occurs. Potentially, the acreage of soybeans as an alternate crop on the latosols of th... Mostrar Tudo |
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Palavras-Chave: |
Soybean. |
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Thesagro: |
Clima; Irrigação; Soja; Solo. |
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Thesaurus Nal: |
climate; irrigation; soil; Sri Lanka. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02298naa a2200241 a 4500
001 1453495
005 2004-10-07
008 1981 bl uuuu u00u1 u #d
100 1 $aLEWIS, J. A.
245 $aIrrigated soybeans and the production of other legumes on the latosolsof Sri Lanka.
260 $c1981
500 $aVer trabalho preliminar no PC 3730.
520 $aThis paper reports on the irrigation needs of soybeans when grown on latosols in Sri Lanka. High yields were obtained with irrigation, ranging from 3,000 to 6,000 kg/ha on research plots. In farmer's fields, yields averaged 2,000 to 2,500 kg/ha. Irrigation is from groundwater, sothe exact water requirements at different stages of crop production must be determined lysimetry experiments were conducted to determine the rate of evapotranspiration (ET). Potential evapotranspiration (ETpot)was computed using the penman equation. Evaporation from the class A pan (E O) was monitored. The following values were recorded at the major stages of development: early growth stage, ET/ E O = 1; flowering stage, ET/E O = 1.1; pod-development stage, ET/E O = 1.15; and bean-filling stage, ET/E O = 1.2. Hence, yields may be adversely affected if the crop is stressed during the latter part of pod development and during the bean-filling stage. To study soybean response under different water availability in the soil, an experiment was conducted, irrigating soybeans at three levels of water stress: 0.26 to 0.33 bars of mercury, 0.39 to 0.46 bars, and 0.52 to 0.59 bars. The experiment is still in the field, so conclusions about pod-size development and yields cannot be made. However, the results to date indicate that at the highest stress (0.52 to 0.59 bars), pod development is advanced and less vegetative growth occurs. Potentially, the acreage of soybeans as an alternate crop on the latosols of the northwest regions of Sri Lanka
650 $aclimate
650 $airrigation
650 $asoil
650 $aSri Lanka
650 $aClima
650 $aIrrigação
650 $aSoja
650 $aSolo
653 $aSoybean
773 $tIn: CONFERENCE ON IRRIGATED SOYBEAN PRODUCTION IN ARID IN AND SEMI-ARID REGIONS, 1979, Cairo. Proceedings. Urbana-Champaign : INTSOY / University of Illinois, 1981. p.86-91. (INTSOY. Series, 20).
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Embrapa Soja (CNPSO) |
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| Registros recuperados : 5 | |
| 3. |  | LEWIS, J.; VOSTI, S.; WITCOVER, J.; ERICKSEN, P. J.; GUEVARA, R.; TOMICH, T. (ed.). Alternatives to slash-and-burn in Brazil: summary report and synthesis of phase II. Nairobi, Kenya: ICRAF-ASB, 2002. 93 p. Contribuição de pesquisadores das Embrapas Acre e Rondônia:
Embrapa Acre: (Jair Carvalho dos Santos, Evaldo Muñoz Braz, Judson Ferreira Valentim, T. C. de Araújo Gomes, Marcus Vinicio Neves d'Oliveira, Eufran Ferreira do Amaral, Divonzil...| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Acre; Embrapa Rondônia. |
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| 4. | | BOCCANELLI, S. I.; PIRE, E. F.; TORRES, P. S.; LEWIS, J. P. Cambios en la vegetacion de un campo abandonado despues de un cultivo de trigo. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 34, n. 2, p. 151-157, fev. 1999 Título em inglês: Vegetation changes in a field abandoned after a wheat crop.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 5. | | TOMICH, T. P.; CATTANEO, A.; CHATER, S.; GEIST, H. J.; GOCKOWSKI, J.; KAIMOWITZ, D.; LAMBIN, E. F.; LEWIS, J.; NDOYE, O.; PALM, C. A.; STOLLE, F.; SUNDERLIN, W. D.; VALENTIM, J. F.; NOORDWIJK, M. van; VOSTI, S. A. Balancing agricultural development and environmental objectives: assessing tradeoffs in the humid tropics. In: PALM, C. A.; VOSTI, S. A.; SANCHEZ, P. A.; ERICKSEN, P. J. (ed.). Slash-and-burn agriculture: the search for alternatives. New York: Columbia University Press, 2005. cap. 18, p. 415-440.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Acre. |
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| Registros recuperados : 5 | |
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