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| 1. |  | SANTOS, M. X.; LOPES, M. A.; COELHO, A. M.; GUIMARAES, P. E. O.; PARENTONI, S. N.; GAMA, E. E. G.; FRANCA, G. E. Drought and low N status limiting maize production in Brazil. In: SYMPOSIUM OF DEVELOPPING DROUGHT AND LOW N-TOLERANCE MAIZE, 1996, El Batan, Mexico. Proceedings... El Batan: CIMMYT, 1997. p. 20-23.| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 1 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
14/11/1997 |
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Data da última atualização: |
11/06/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SANTOS, M. X.; LOPES, M. A.; COELHO, A. M.; GUIMARAES, P. E. O.; PARENTONI, S. N.; GAMA, E. E. G.; FRANCA, G. E. |
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Afiliação: |
EMBRAPA/CNPMS; ANTONIO MARCOS COELHO, CNPMS; PAULO EVARISTO DE O GUIMARAES, CNPMS; SIDNEY NETTO PARENTONI, CNPMS. |
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Título: |
Drought and low N status limiting maize production in Brazil. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
In: SYMPOSIUM OF DEVELOPPING DROUGHT AND LOW N-TOLERANCE MAIZE, 1996, El Batan, Mexico. Proceedings... El Batan: CIMMYT, 1997. p. 20-23. |
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Idioma: |
Inglês |
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Conteúdo: |
The Brazilian territory has an area of approximately 8,5 million km2, which is divided into five main regions with particular characteristics related to average climitaic conditions and natural soil fertility. Climatic variations may be very accentuated within each particular region, but a common feature is the irregular distribution of rains, which causes droughts of variable intensities. Maize is an important crop in most Brazilian regions, occupying approximately 13 million ha and producing annually 28-30 million tons of grain. It has been estimated that drought problems, depending on year intensity, reduce maize production by 14% to 28%. Another limiting factor for maize production in Brazil is the low natural fertility of the soils, especially in nutrients like phosphorus and nitrogen (N). It has been estimated that 80% of the soils in Brazil are deficient in N. Although fertilization is a common solution to this problem, its high costs make this option inaccessible to many farmers. The amount of supplemental N applied to maize in Brazil is low (36 kg N/ha), and of this only 50% to 60% is utilized by the crop. Considering that low N availability and drought are severe constraints to maize crop in Brazil, the National Maize and Sorghum Research Center (CNPMS/EMBRAPA) has initiated breeding programs aimed at the development of germplasm that performs more efficienctly under these two limiting conditions. Several genotypes have been developed on the basis of anthesis-silking interval selection (...) MenosThe Brazilian territory has an area of approximately 8,5 million km2, which is divided into five main regions with particular characteristics related to average climitaic conditions and natural soil fertility. Climatic variations may be very accentuated within each particular region, but a common feature is the irregular distribution of rains, which causes droughts of variable intensities. Maize is an important crop in most Brazilian regions, occupying approximately 13 million ha and producing annually 28-30 million tons of grain. It has been estimated that drought problems, depending on year intensity, reduce maize production by 14% to 28%. Another limiting factor for maize production in Brazil is the low natural fertility of the soils, especially in nutrients like phosphorus and nitrogen (N). It has been estimated that 80% of the soils in Brazil are deficient in N. Although fertilization is a common solution to this problem, its high costs make this option inaccessible to many farmers. The amount of supplemental N applied to maize in Brazil is low (36 kg N/ha), and of this only 50% to 60% is utilized by the crop. Considering that low N availability and drought are severe constraints to maize crop in Brazil, the National Maize and Sorghum Research Center (CNPMS/EMBRAPA) has initiated breeding programs aimed at the development of germplasm that performs more efficienctly under these two limiting conditions. Several genotypes have been developed on the basis of anthesis-silki... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Fertility; Maize; Production; Tolerance; Tolerancia. |
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Thesagro: |
Fertilidade; Melhoramento; Milho; Nitrogênio; Produção; Seca; Zea Mays. |
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Thesaurus NAL: |
Brazil; breeding; drought; nitrogen; soil. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/38235/1/Drought-low.pdf
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Marc: |
LEADER 02593nam a2200397 a 4500
001 1477300
005 2018-06-11
008 1997 bl uuuu u00u1 u #d
100 1 $aSANTOS, M. X.
245 $aDrought and low N status limiting maize production in Brazil.$h[electronic resource]
260 $aIn: SYMPOSIUM OF DEVELOPPING DROUGHT AND LOW N-TOLERANCE MAIZE, 1996, El Batan, Mexico. Proceedings... El Batan: CIMMYT, 1997. p. 20-23.$c1997
520 $aThe Brazilian territory has an area of approximately 8,5 million km2, which is divided into five main regions with particular characteristics related to average climitaic conditions and natural soil fertility. Climatic variations may be very accentuated within each particular region, but a common feature is the irregular distribution of rains, which causes droughts of variable intensities. Maize is an important crop in most Brazilian regions, occupying approximately 13 million ha and producing annually 28-30 million tons of grain. It has been estimated that drought problems, depending on year intensity, reduce maize production by 14% to 28%. Another limiting factor for maize production in Brazil is the low natural fertility of the soils, especially in nutrients like phosphorus and nitrogen (N). It has been estimated that 80% of the soils in Brazil are deficient in N. Although fertilization is a common solution to this problem, its high costs make this option inaccessible to many farmers. The amount of supplemental N applied to maize in Brazil is low (36 kg N/ha), and of this only 50% to 60% is utilized by the crop. Considering that low N availability and drought are severe constraints to maize crop in Brazil, the National Maize and Sorghum Research Center (CNPMS/EMBRAPA) has initiated breeding programs aimed at the development of germplasm that performs more efficienctly under these two limiting conditions. Several genotypes have been developed on the basis of anthesis-silking interval selection (...)
650 $aBrazil
650 $abreeding
650 $adrought
650 $anitrogen
650 $asoil
650 $aFertilidade
650 $aMelhoramento
650 $aMilho
650 $aNitrogênio
650 $aProdução
650 $aSeca
650 $aZea Mays
653 $aBrasil
653 $aFertility
653 $aMaize
653 $aProduction
653 $aTolerance
653 $aTolerancia
700 1 $aLOPES, M. A.
700 1 $aCOELHO, A. M.
700 1 $aGUIMARAES, P. E. O.
700 1 $aPARENTONI, S. N.
700 1 $aGAMA, E. E. G.
700 1 $aFRANCA, G. E.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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