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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
19/05/1993 |
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Data da última atualização: |
26/10/2004 |
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Autoria: |
BLANCHET, R.; BOUNIOLS, A.; GELFI, N.; WALLACE, S. U. |
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Afiliação: |
INRA, Station d'Agronomie, B.P. 27-31326, Castanet, Tolosan Cedex, France. |
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Título: |
Response of determinate and indeterminate soybeans to fertilizing irrigation in soils of different depths. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
In: CONFERENCIA MUNDIAL DE INVESTIGACION EN SOJA, 4., 1989, Buenos Aires. Actas... Buenos Aires: AASOJA, 1989. |
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Volume: |
t.2 |
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Páginas: |
p.740-745. |
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Idioma: |
Inglês |
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Conteúdo: |
Because soybean yields of 4 to 5 tons./ha-1 require abundant quantities of water and nitrogen, experiments were conducted in SW France on soils (fine, mixed, mesic Udic Haplustalfs) of varying depths, with water and mineral N reserves related to depth. Treatments included irrigations as well as N-fertilizing irrigations in which 3 doses of 50 kg.ha-1 N, as urea, were delivered in the irrigation water at various stages in reproductive development. Genotypes (maturity groups I to III) were of indeterminate, semi-dwarf determinate, or semi-determinate growth habit. For all growth habit types, yields increased in a similar manner with increases in available water due to irrigation or increasing soil depth. Response to N application depended on growth habit as well as soil depth and timing of N application. In general, with high inputs of water and N, yields were more stable for determinates, due to their superior lodging resistance. The largest yield responses to N (+0.5 to 1 ton.ha-1) occurred in shallow soil with N applied between R1 and R4. Earlier N application decreased nodulation, had little effect on fructification, and resulted in excessive vegetative growth of indeterminates. Likewise, in deep soils where N was not limiting, N application resulted in extensive lodging, increased diseases, and yield reductions especially in indeterminates. These results suggest that N application during reproductive growth may enhance yield, but they also demonstrate that the amount, timing, and partitioning of supplemental ... MenosBecause soybean yields of 4 to 5 tons./ha-1 require abundant quantities of water and nitrogen, experiments were conducted in SW France on soils (fine, mixed, mesic Udic Haplustalfs) of varying depths, with water and mineral N reserves related to depth. Treatments included irrigations as well as N-fertilizing irrigations in which 3 doses of 50 kg.ha-1 N, as urea, were delivered in the irrigation water at various stages in reproductive development. Genotypes (maturity groups I to III) were of indeterminate, semi-dwarf determinate, or semi-determinate growth habit. For all growth habit types, yields increased in a similar manner with increases in available water due to irrigation or increasing soil depth. Response to N application depended on growth habit as well as soil depth and timing of N application. In general, with high inputs of water and N, yields were more stable for determinates, due to their superior lodging resistance. The largest yield responses to N (+0.5 to 1 ton.ha-1) occurred in shallow soil with N applied between R1 and R4. Earlier N application decreased nodulation, had little effect on fructification, and resulted in excessive vegetative growth of indeterminates. Likewise, in deep soils where N was not limiting, N application resulted in extensive lodging, increased diseases, and yield reductions especially in indeterminates. These results suggest that N application during reproductive growth may enhance yield, but they also demonstrate that the amount, tim... Mostrar Tudo |
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Palavras-Chave: |
Franca; Management; Production; Soybean; Yield. |
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Thesagro: |
Irrigação; Manejo; Produção; Rendimento; Soja; Solo. |
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Thesaurus Nal: |
France; irrigation; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02457naa a2200349 a 4500
001 1451532
005 2004-10-26
008 1989 bl uuuu u00u1 u #d
100 1 $aBLANCHET, R.
245 $aResponse of determinate and indeterminate soybeans to fertilizing irrigation in soils of different depths.
260 $c1989
300 $ap.740-745. t.2
490 $vt.2
520 $aBecause soybean yields of 4 to 5 tons./ha-1 require abundant quantities of water and nitrogen, experiments were conducted in SW France on soils (fine, mixed, mesic Udic Haplustalfs) of varying depths, with water and mineral N reserves related to depth. Treatments included irrigations as well as N-fertilizing irrigations in which 3 doses of 50 kg.ha-1 N, as urea, were delivered in the irrigation water at various stages in reproductive development. Genotypes (maturity groups I to III) were of indeterminate, semi-dwarf determinate, or semi-determinate growth habit. For all growth habit types, yields increased in a similar manner with increases in available water due to irrigation or increasing soil depth. Response to N application depended on growth habit as well as soil depth and timing of N application. In general, with high inputs of water and N, yields were more stable for determinates, due to their superior lodging resistance. The largest yield responses to N (+0.5 to 1 ton.ha-1) occurred in shallow soil with N applied between R1 and R4. Earlier N application decreased nodulation, had little effect on fructification, and resulted in excessive vegetative growth of indeterminates. Likewise, in deep soils where N was not limiting, N application resulted in extensive lodging, increased diseases, and yield reductions especially in indeterminates. These results suggest that N application during reproductive growth may enhance yield, but they also demonstrate that the amount, timing, and partitioning of supplemental ...
650 $aFrance
650 $airrigation
650 $asoil
650 $aIrrigação
650 $aManejo
650 $aProdução
650 $aRendimento
650 $aSoja
650 $aSolo
653 $aFranca
653 $aManagement
653 $aProduction
653 $aSoybean
653 $aYield
700 1 $aBOUNIOLS, A.
700 1 $aGELFI, N.
700 1 $aWALLACE, S. U.
773 $tIn: CONFERENCIA MUNDIAL DE INVESTIGACION EN SOJA, 4., 1989, Buenos Aires. Actas... Buenos Aires: AASOJA, 1989.
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Registro original: |
Embrapa Soja (CNPSO) |
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