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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
30/07/1999 |
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Data da última atualização: |
30/07/1999 |
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Autoria: |
LARSON, D. W. |
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Título: |
Seasonal change in the pattern of net CO2, exchange in Umbilicaria lichens. |
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Ano de publicação: |
1980 |
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Fonte/Imprenta: |
New Phytology, v.84, n.2, p.349-370, 1980. |
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Idioma: |
Inglês |
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Palavras-Chave: |
CO2 exchange; Sazonal; Seasonal; Troca CO2; Variacao; Variation. |
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Thesagro: |
Líquen. |
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Thesaurus Nal: |
lichens; Umbilicaria. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00555naa a2200217 a 4500
001 1798249
005 1999-07-30
008 1980 bl --- 0-- u #d
100 1 $aLARSON, D. W.
245 $aSeasonal change in the pattern of net CO2, exchange in Umbilicaria lichens.
260 $c1980
650 $alichens
650 $aUmbilicaria
650 $aLíquen
653 $aCO2 exchange
653 $aSazonal
653 $aSeasonal
653 $aTroca CO2
653 $aVariacao
653 $aVariation
773 $tNew Phytology$gv.84, n.2, p.349-370, 1980.
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Registro original: |
Embrapa Pantanal (CPAP) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
16/10/1992 |
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Data da última atualização: |
26/10/2004 |
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Autoria: |
BORKERT, C. M.; GAUDENCIO, C. de A.; LANTMANN, A. F. |
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Afiliação: |
EMBRAPA-CNPSo. Londrina, PR. |
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Título: |
Fertilization and rotation of the soybean crop in the South of Brazil. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
In: CONFERENCIA MUNDIAL DE INVESTIGACION DE SOJA, 4., 1989, Buenos Aires. Actas... Buenos Aires: AASOJA, 1989. |
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Volume: |
t.5 |
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Páginas: |
p.2282-2294. |
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Idioma: |
Inglês |
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Conteúdo: |
The oxisols and ultisols of the tropics usually are less fertile than the soils of temperate regions. Some soybean varieties cultivated in the tropics are more tolerant to high Al and Mn concentrations in acid soils than wheat. They may even grow relatively well with less fertilizer, but to attain high productivity levels they need a large amount of inputs. These acidic and higly weahered soils may produce high yields after liming and a corrective fertilization for phosphorus and sometimes potassium. However, after several years of soybean-wheat double cropping on these soils, there has beean a gradual reduction in yields even with large amounts of inputs. This decrease can not be explained by low soil fertility, since chemical analysis shows high nutrients availability. It may be mainly atributed to poor soil tilth due to excessive plowing and disking, and continuous soybean-wheat doble cropping without a crop rotation. Different from the cold regions, where in winter no crops are grown and the soil is covered by snow, the tropics are characterized by year round cultivation. This year round systems is used in regions with enough rainfall or where irrigation is possible in the dry season, since there are no serious temperature and light limitations. However, continuous cultivation of these two crops led to compacted soil and high erosion, in addition to an increase in plant diseases an insect problems. These problems were partially overcome by some farmers who successfully adopted the no-till cultivation ... MenosThe oxisols and ultisols of the tropics usually are less fertile than the soils of temperate regions. Some soybean varieties cultivated in the tropics are more tolerant to high Al and Mn concentrations in acid soils than wheat. They may even grow relatively well with less fertilizer, but to attain high productivity levels they need a large amount of inputs. These acidic and higly weahered soils may produce high yields after liming and a corrective fertilization for phosphorus and sometimes potassium. However, after several years of soybean-wheat double cropping on these soils, there has beean a gradual reduction in yields even with large amounts of inputs. This decrease can not be explained by low soil fertility, since chemical analysis shows high nutrients availability. It may be mainly atributed to poor soil tilth due to excessive plowing and disking, and continuous soybean-wheat doble cropping without a crop rotation. Different from the cold regions, where in winter no crops are grown and the soil is covered by snow, the tropics are characterized by year round cultivation. This year round systems is used in regions with enough rainfall or where irrigation is possible in the dry season, since there are no serious temperature and light limitations. However, continuous cultivation of these two crops led to compacted soil and high erosion, in addition to an increase in plant diseases an insect problems. These problems were partially overcome by some farmers who successfully a... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Fertilizacao; Fertilization; Fertilizer; Nutrient; Regiao sul; Rotacao; Rotation; South region; Soybean. |
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Thesagro: |
Adubação; Fertilizante; Nutriente; Plantio Direto; Soja; Solo; Trigo. |
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Thesaurus NAL: |
Brazil; no-tillage; soil; wheat. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02592naa a2200421 a 4500
001 1451655
005 2004-10-26
008 1989 bl uuuu u00u1 u #d
100 1 $aBORKERT, C. M.
245 $aFertilization and rotation of the soybean crop in the South of Brazil.
260 $c1989
300 $ap.2282-2294. t.5
490 $vt.5
520 $aThe oxisols and ultisols of the tropics usually are less fertile than the soils of temperate regions. Some soybean varieties cultivated in the tropics are more tolerant to high Al and Mn concentrations in acid soils than wheat. They may even grow relatively well with less fertilizer, but to attain high productivity levels they need a large amount of inputs. These acidic and higly weahered soils may produce high yields after liming and a corrective fertilization for phosphorus and sometimes potassium. However, after several years of soybean-wheat double cropping on these soils, there has beean a gradual reduction in yields even with large amounts of inputs. This decrease can not be explained by low soil fertility, since chemical analysis shows high nutrients availability. It may be mainly atributed to poor soil tilth due to excessive plowing and disking, and continuous soybean-wheat doble cropping without a crop rotation. Different from the cold regions, where in winter no crops are grown and the soil is covered by snow, the tropics are characterized by year round cultivation. This year round systems is used in regions with enough rainfall or where irrigation is possible in the dry season, since there are no serious temperature and light limitations. However, continuous cultivation of these two crops led to compacted soil and high erosion, in addition to an increase in plant diseases an insect problems. These problems were partially overcome by some farmers who successfully adopted the no-till cultivation ...
650 $aBrazil
650 $ano-tillage
650 $asoil
650 $awheat
650 $aAdubação
650 $aFertilizante
650 $aNutriente
650 $aPlantio Direto
650 $aSoja
650 $aSolo
650 $aTrigo
653 $aBrasil
653 $aFertilizacao
653 $aFertilization
653 $aFertilizer
653 $aNutrient
653 $aRegiao sul
653 $aRotacao
653 $aRotation
653 $aSouth region
653 $aSoybean
700 1 $aGAUDENCIO, C. de A.
700 1 $aLANTMANN, A. F.
773 $tIn: CONFERENCIA MUNDIAL DE INVESTIGACION DE SOJA, 4., 1989, Buenos Aires. Actas... Buenos Aires: AASOJA, 1989.
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Embrapa Soja (CNPSO) |
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