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Registros recuperados: 7
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Annual and residual urea nitrogen contribution to the nutrition of peach trees (Prunus persica L.) grown under subtropical climate. Repositório Alice
PAULA, B. V. de; VITTO, B. B.; SETE, P. B.; TRAPP, T.; ZALAMENA, J.; MELO, G. W. B. de; BALDI, E.; TOSELLI, M.; ROZANE, D. E.; BRUNETTO, G..
Nitrogen (N) fertilizers such as urea are applied to peach orchards worldwide whenever the soil cannot meet plants? N demand. However, the actual nutritional contribution of different N supply modes applied to peach crops, or the contribution of residual N in the subsequent cycle, is yet to be fully known. The current study aims to assess the annual and residual urea N contribution to the nutrition of peach trees grown under subtropical climate. Forty kilograms of N per hectare supplied as enriched urea (3.0 at. % 15N), were applied to peach in full production at a single rate (100 % at budding) or split in two rates (50 % at budding and 50 % at flowering). Total 15N and N concentrations in the application year and in the year after treatments were...
Tipo: Artigo de periódico Palavras-chave: Fruit farming; 15N isotope; N distribution; N fertilization; Orchard.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1144667
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Compositional nutrient diagnosis (CND) applied to grapevines grown in subtropical climate region. Repositório Alice
ROZANE, D. E.; PAULA, B. V. de; MELO, G. W. B. de; SANTOS, E. M. H. dos; TRENTIN, E.; MARCHEZAN, C.; SILVA, L. O. A. da; TASSINARI, A.; DOTTO, L.; OLIVEIRA, F. N. de; NATALE, W.; BALDI, E.; TOSELLI, M.; BRUNETTO, G..
Soil analysis is used to estimate nutrient availability, but nutrient concentrations are not always related to yield in most fruit plants, including grapevines. Thus, additional multivariate mathematical models, such as the compositional nutrient diagnosis (CND), which takes into account leaves nutrient concentration, and yield, can contribute to estimating critical levels or sufficiency bands of elements, as well as to detect deficiency and/or excess of nutrients. The aim of the present study was to establish CND standards, and the critical level and sufficiency band of nutrients, in the grapevine Vitis vinifera L., grown in a subtropical climate region. Leaves were collected in 81 vineyards in the Campanha Gaúcha do Rio Grande do Sul region, Southern...
Tipo: Artigo de periódico Palavras-chave: Mineral nutrition; Leaf diagnostic; Nutritional balance; Yield; Vitis Vinifera.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1134201
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Contribution of cover crop residue Decomposition to peach tree nitrogen nutrition. Repositório Alice
TASSINARI, A.; SILVA, L. O. S. da; DRRESCHER, G. L.; OLIVEIRA, R. A. de; BALDI, E.; MELO, G. W. B. de; ZALAMENA, J.; MAYER, N. A.; GIACOMINI, S. J.; CARRANCA, C. L. de A. F.; FERREIRA, P. A. A.; PAULA, B. V. de; LOSS, A.; TOSELLI, M.; BRUNETTO, G..
Cover crop nitrogen (N) cycling has an important role in agricultural production and contributes to peach [Prunus persica (L.) Batsch] N nutrition. This study evaluated black oat (Avena strigosa Schreb) and ryegrass (Lolium multiflorum L.) residue decomposition dynamics, N recovery from cover crop residues, and N compartmentalization in peach tree organs. A 2-year field trial was developed with labeled (3.6?4.0 atom% 15N excess) cover crop shoot biomass application in a 5-year-old peach orchard. The region?s climate is warm temperate (Cfb), and the soil is classified as a Typic Hapludalf. Litter bags with unlabeled shoot residues were also deposited in the orchard to assess biomass, carbon (C), N, lignin, cellulose, and non-structural biomass decomposition...
Tipo: Artigo de periódico Palavras-chave: Ncycling; 15N recovery; Prunus persica L Batsch; Avena Strigosa; Lolium Multiflorum; Nitrogênio; Pêssego.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1144663
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High copper content in vineyard soils promotes modifications in photosynthetic parameters and morphological changes in the root system of "Red Niagara" plantlets. Repositório Alice
AMBROSINI, V. G.; ROSA, D. J.; MELO, G. W. B. de; ZALAMENA, J.; CELLA, C.; SIMÃO, D. G.; SILVA, L. S. da; SANTOS, H. P. dos; TOSELLI, M.; TIECHER, T. L.; BRUNETTO, G..
High copper (Cu) soil contents, due to the continuous vineyard application of Cu fungicides throughout the years, may impair the growth of the shoot and modify the structure of the root system. The current study aimed to investigate the threshold levels of available Cu in the soil causing toxicity effects in young grapevine plants of ‘Red Niagara’ cultivated in clay soils. Grapevine plantlets were cultivated in pots containing vineyard devoted soils with increasing contents of available Cu (25, 80, 100 and 165 mg kg?1 ), for 53 days. Photosynthesis and transpiration rates, and the quantum yield of photosystem II (Fv/Fm) were evaluated during the cultivation period. At the end of the experiment, the plant nutrient and leaf chlorophyll were determined, along...
Tipo: Artigo de periódico Palavras-chave: Available Cu; Net photosynthesis; Maximum quantum yield; Root diameter; Vitis labrusca L; High copper; ‘Red Niagara’ plantlets.; Vineyard soils; Root systems.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103407
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Nitrogen fertilization affects yield and fruit quality in pear. Repositório Alice
SETE, P. B.; COMIN, J. J.; CIOTTA, M. N.; SALUME, J. A.; THEWES, F.; BRACKMANN, A.; TOSELLI, M.; NAVA, G.; ROZANE, D. E.; LOSS, A.; LOURENZI, C. R.; COUTO, R. da R.; BRUNETTO, G..
Tipo: Artigo de periódico Palavras-chave: Nitrogen fertilization; Soil mineral N; Most economical dose; Fruit quality.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112259
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Nitrogen fertilization of chardonnay grapevine: yield, must composition and their relationship with temperature and rainfall. Repositório Alice
BRUNETTO, G.; SILVA, L. S. da; CERETTA, C. A.; COUTO, R. R.; FERREIRA, P. A.; AMBROSINI, V. G.; BORGHESAN, M.; COMIN, J. J.; MELO, G. W. B. de; BALDI, E.; TOSELLI, M..
Clay soils with high organic matter content in Southern Brazil were planted with grapevines. However, because of the low temperatures, the mineralized N of organic matter does not always meet the N demands of the grapevines.
Tipo: Separatas Palavras-chave: Estatus nuticional; Vitícolas; Vineyard; Nutricional status.; Nitrogênio.; Nitrogen..
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1060626
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Nitrogen fertilization of "Chardonnay" grapevines: yield, must composition and their relationship with temperature and rainfall. Repositório Alice
BRUNETTO, G.; STEFANELLO, L. O.; CERETTA, C. A.; COUTO, R. da R.; FERREIRA, P. A. A.; AMBROSINI, V. G.; BORGHEZAN, M.; COMIN, J. J.; MELO, G. W. B. de; BALDI, E.; TOSELLI, M..
In soils rich inorganic matter(OM), such as those in the elevations of South Brazil, themineralized N from organic matter does not always meet the N demands of grapevines, thus, N applications are necessary during vinegrowth. However, the optimal N rate to achieve satisfactory yield and desirable grape enological composition is not known.
Tipo: Artigo de periódico Palavras-chave: Grape production; Vitis Vinifera; Nitrogen; Nutritional status; Grapes; Vineyards.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1118389
Registros recuperados: 7
Primeira ... 1 ... Última
 

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