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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
14/09/1995 |
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Data da última atualização: |
14/09/1995 |
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Autoria: |
CHRISTENSEN, L. P.; BIANCHI, M. L.; PEACOCK, W. L.; HIRSCHFELT, D. J. |
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Afiliação: |
University of California. |
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Título: |
Effect of nitrogen fertilizer timing and rate on inorganic nitrogen status, fruit composition, and yield of grapevines. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
Am. J. Enol. Vitic., v.45, n.4, p.377-387, 1994. |
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Idioma: |
Inglês |
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Notas: |
Separata. |
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Conteúdo: |
A four-year (1987-90) trial was conducted to study the effects of timing and rate of N fertilizer application on furrow-irrigated Barbera, Grenache, French Colombard, and Chenin blanc grapevines. The objectiveswere to further determine optimum N fertilizer practices for importantwine cultivars in the San Joaquin Valley and to compare inorganic N constituents, NO3-N and NH4+-N, for N status determination. The six treatments included four N fertilizer application timings at budbreak (BB), fruit set (FS), veraison (V), and post-harvest (PH) with a 56 kg N/ha rate, as well as BB with a 2X rate of 112 kg N/ha and control (CO). Vine N status was determined by NO3-N and NH4+-N levels and their sum, total inorganic N (TN), in bloom and veraison petioles. Yield andfruit composition parameters were measured for vine response. Cultivarresponses varied widely, with Grenache and Barbera being the high and low extreme cultivars, respectively, in petiole TN status and responsiveness to N treatment; French Colombard and Chenin blanc were intermediate. Generally, TN status increased with increasing N rate (CO BB56 BB12). Nitrogen fertilizer timing demonstrated that the more recent N applications often resulted in a higher petiole TN status at the next petiole sampling; i.e., PH56 and BB56 treatment petioles had higher TN status at bloom while FS56 was higher at veraison. Post-harvest timingwas found to be particularly effective in supplying petiole TN in the spring; i.e., PH56 sometimes resulted in bloom petiole TN levels ... MenosA four-year (1987-90) trial was conducted to study the effects of timing and rate of N fertilizer application on furrow-irrigated Barbera, Grenache, French Colombard, and Chenin blanc grapevines. The objectiveswere to further determine optimum N fertilizer practices for importantwine cultivars in the San Joaquin Valley and to compare inorganic N constituents, NO3-N and NH4+-N, for N status determination. The six treatments included four N fertilizer application timings at budbreak (BB), fruit set (FS), veraison (V), and post-harvest (PH) with a 56 kg N/ha rate, as well as BB with a 2X rate of 112 kg N/ha and control (CO). Vine N status was determined by NO3-N and NH4+-N levels and their sum, total inorganic N (TN), in bloom and veraison petioles. Yield andfruit composition parameters were measured for vine response. Cultivarresponses varied widely, with Grenache and Barbera being the high and low extreme cultivars, respectively, in petiole TN status and responsiveness to N treatment; French Colombard and Chenin blanc were intermediate. Generally, TN status increased with increasing N rate (CO BB56 BB12). Nitrogen fertilizer timing demonstrated that the more recent N applications often resulted in a higher petiole TN status at the next petiole sampling; i.e., PH56 and BB56 treatment petioles had higher TN status at bloom while FS56 was higher at veraison. Post-harvest timingwas found to be particularly effective in supplying petiole TN in the spring; i.e., PH56 sometimes resu... Mostrar Tudo |
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Thesagro: |
Adubação; Nitrogênio; Produção; Uva. |
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Categoria do assunto: |
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Marc: |
LEADER 02154naa a2200217 a 4500
001 1075212
005 1995-09-14
008 1994 bl --- 0-- u #d
100 1 $aCHRISTENSEN, L. P.
245 $aEffect of nitrogen fertilizer timing and rate on inorganic nitrogen status, fruit composition, and yield of grapevines.
260 $c1994
500 $aSeparata.
520 $aA four-year (1987-90) trial was conducted to study the effects of timing and rate of N fertilizer application on furrow-irrigated Barbera, Grenache, French Colombard, and Chenin blanc grapevines. The objectiveswere to further determine optimum N fertilizer practices for importantwine cultivars in the San Joaquin Valley and to compare inorganic N constituents, NO3-N and NH4+-N, for N status determination. The six treatments included four N fertilizer application timings at budbreak (BB), fruit set (FS), veraison (V), and post-harvest (PH) with a 56 kg N/ha rate, as well as BB with a 2X rate of 112 kg N/ha and control (CO). Vine N status was determined by NO3-N and NH4+-N levels and their sum, total inorganic N (TN), in bloom and veraison petioles. Yield andfruit composition parameters were measured for vine response. Cultivarresponses varied widely, with Grenache and Barbera being the high and low extreme cultivars, respectively, in petiole TN status and responsiveness to N treatment; French Colombard and Chenin blanc were intermediate. Generally, TN status increased with increasing N rate (CO BB56 BB12). Nitrogen fertilizer timing demonstrated that the more recent N applications often resulted in a higher petiole TN status at the next petiole sampling; i.e., PH56 and BB56 treatment petioles had higher TN status at bloom while FS56 was higher at veraison. Post-harvest timingwas found to be particularly effective in supplying petiole TN in the spring; i.e., PH56 sometimes resulted in bloom petiole TN levels ...
650 $aAdubação
650 $aNitrogênio
650 $aProdução
650 $aUva
700 1 $aBIANCHI, M. L.
700 1 $aPEACOCK, W. L.
700 1 $aHIRSCHFELT, D. J.
773 $tAm. J. Enol. Vitic.$gv.45, n.4, p.377-387, 1994.
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Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
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