| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Arroz e Feijão; Embrapa Cerrados; Embrapa Meio Norte / UEP-Parnaíba; Embrapa Meio-Norte; Embrapa Rondônia; Embrapa Semiárido; Embrapa Soja; Embrapa Trigo. |
|
Data corrente: |
04/10/1993 |
|
Data da última atualização: |
21/06/2000 |
|
Autoria: |
GUIMARAES, C. M. |
|
Título: |
Effects of soil moisture and atmospheric conditions on the water status of soybean plants (Glycine max (L.) Merrill). |
|
Ano de publicação: |
1979 |
|
Fonte/Imprenta: |
Mississippi: Mississippi State University, 1979. |
|
Páginas: |
90p. |
|
Idioma: |
Inglês |
|
Notas: |
M.Sc. Thesis. |
|
Conteúdo: |
Two experiments were conducted in the field to study the effects of soil moisture and atmospheric conditions on the water status of soybeans. Leaf diffusive resistance at midday, and leaf water potential early in the morning and at midday were correlated with soil moisture and atmospheric parameters. The atmospheric parameters studied were: solar radiation, potential evapotranspiration, pan evaporation and maximum air temperature. In addition leaf temperatures were correlated with leaf diffusive resistance. Atmospheric conditions explained the variations in leaf diffusive resistance and leaf water potential of non-stressed plants better than in the stressed plants. Water status of nonstressed plants in 1977 were explained better than in 1978. Probably factors associated with limited volume of soil, and different soil structure inside the soil containers used in 1978 were the reason for those variations of results. The highest yields were obtained from plants not stressed during the entire season. Treatments A (water stress initiated during the flowering), B (water stress initiated during early pod formation), and C (water stress initiated during later pod filling) reduced seed yield 73%, 70% and 44%, respectively. The weight of 100 seeds produced by soybean plants of treatments A and the control were the same. However, the seeds on plants of treatments B and C were significantly smaller. Stress applied during the late pod filling stage produced the smallest seeds. Information obtained from this experiment illustrated two points: (1) the importance of studying plant water status under natural environmental conditions, and (2) water stress during late pod filling is more deleterious on soybean yield than water stress imposed at any other stage. MenosTwo experiments were conducted in the field to study the effects of soil moisture and atmospheric conditions on the water status of soybeans. Leaf diffusive resistance at midday, and leaf water potential early in the morning and at midday were correlated with soil moisture and atmospheric parameters. The atmospheric parameters studied were: solar radiation, potential evapotranspiration, pan evaporation and maximum air temperature. In addition leaf temperatures were correlated with leaf diffusive resistance. Atmospheric conditions explained the variations in leaf diffusive resistance and leaf water potential of non-stressed plants better than in the stressed plants. Water status of nonstressed plants in 1977 were explained better than in 1978. Probably factors associated with limited volume of soil, and different soil structure inside the soil containers used in 1978 were the reason for those variations of results. The highest yields were obtained from plants not stressed during the entire season. Treatments A (water stress initiated during the flowering), B (water stress initiated during early pod formation), and C (water stress initiated during later pod filling) reduced seed yield 73%, 70% and 44%, respectively. The weight of 100 seeds produced by soybean plants of treatments A and the control were the same. However, the seeds on plants of treatments B and C were significantly smaller. Stress applied during the late pod filling stage produced the smallest seeds. Informatio... Mostrar Tudo |
|
Palavras-Chave: |
Atmospheric condition; Balanco de agua; Condicao atmosferica; Efeito; Estresse hidrico; Meteorological elements; Metereological elements; Plant; Plant weater relations; Potencial; Potential; Solos; Soybean. |
|
Thesagro: |
Água; Água do solo; Atmosfera; Balanço hídrico; Clima; Evapotranspiração; Glycine Max; Manejo de Água; Planta; Relação Água-Planta; Retenção de água no solo; Soja; Solo; Stress; Temperatura; Umidade do Solo. |
|
Thesaurus Nal: |
climate; soil; soil water content; Soil water retention; soybeans; water; water balance; water stress. |
|
Categoria do assunto: |
--
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 03279nam a2200577 a 4500
001 1560012
005 2000-06-21
008 1979 bl uuuu m 00u1 u #d
100 1 $aGUIMARAES, C. M.
245 $aEffects of soil moisture and atmospheric conditions on the water status of soybean plants (Glycine max (L.) Merrill).
260 $aMississippi: Mississippi State University$c1979
300 $a90p.
500 $aM.Sc. Thesis.
520 $aTwo experiments were conducted in the field to study the effects of soil moisture and atmospheric conditions on the water status of soybeans. Leaf diffusive resistance at midday, and leaf water potential early in the morning and at midday were correlated with soil moisture and atmospheric parameters. The atmospheric parameters studied were: solar radiation, potential evapotranspiration, pan evaporation and maximum air temperature. In addition leaf temperatures were correlated with leaf diffusive resistance. Atmospheric conditions explained the variations in leaf diffusive resistance and leaf water potential of non-stressed plants better than in the stressed plants. Water status of nonstressed plants in 1977 were explained better than in 1978. Probably factors associated with limited volume of soil, and different soil structure inside the soil containers used in 1978 were the reason for those variations of results. The highest yields were obtained from plants not stressed during the entire season. Treatments A (water stress initiated during the flowering), B (water stress initiated during early pod formation), and C (water stress initiated during later pod filling) reduced seed yield 73%, 70% and 44%, respectively. The weight of 100 seeds produced by soybean plants of treatments A and the control were the same. However, the seeds on plants of treatments B and C were significantly smaller. Stress applied during the late pod filling stage produced the smallest seeds. Information obtained from this experiment illustrated two points: (1) the importance of studying plant water status under natural environmental conditions, and (2) water stress during late pod filling is more deleterious on soybean yield than water stress imposed at any other stage.
650 $aclimate
650 $asoil
650 $asoil water content
650 $aSoil water retention
650 $asoybeans
650 $awater
650 $awater balance
650 $awater stress
650 $aÁgua
650 $aÁgua do solo
650 $aAtmosfera
650 $aBalanço hídrico
650 $aClima
650 $aEvapotranspiração
650 $aGlycine Max
650 $aManejo de Água
650 $aPlanta
650 $aRelação Água-Planta
650 $aRetenção de água no solo
650 $aSoja
650 $aSolo
650 $aStress
650 $aTemperatura
650 $aUmidade do Solo
653 $aAtmospheric condition
653 $aBalanco de agua
653 $aCondicao atmosferica
653 $aEfeito
653 $aEstresse hidrico
653 $aMeteorological elements
653 $aMetereological elements
653 $aPlant
653 $aPlant weater relations
653 $aPotencial
653 $aPotential
653 $aSolos
653 $aSoybean
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Cerrados (CPAC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 392 | |
| 3. |  | GUIMARÃES, C. M. Efeitos fisiológicos do estresse hídrico. In: ZIMMERMANN, M. J.de O.; ROCHA, M.; YAMADA, T. (Ed.). Cultura do feijoeiro: fatores que afetam a produtividade. Piracicaba: Associação Brasileira para Pesquisa da Potassa e do Fosfato, 1988. p. 157-174.| Biblioteca(s): Embrapa Arroz e Feijão. |
|   |
| 7. | | GUIMARÃES, C. M. Relacoes hidricas. In: ARAUJO, R. S.; RAVA, C. A.; STONE, L. F.; ZIMMERMANN, M. J. de O. (Coord.). Cultura do feijoeiro comum no Brasil. Piracicaba: POTAFOS, 1996. p. 139-167.| Biblioteca(s): Embrapa Arroz e Feijão. |
| |
| 15. | | GUIMARÃES, C. M.; YOKOYAMA, L. P. O arroz em plantio direto. In: BRESEGHELLO, F.; STONE, L. F. (Ed.). Tecnologia para o arroz de terras altas. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 1998. p. 25-30.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Arroz e Feijão. |
|  |
| Registros recuperados : 392 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
