SciELO - Scientific Electronic Library Online

 
vol.44 issue1Influencie of weed control methods on the soil structure in a coffee cropSynthesis of chlorophylls and glycoalkaloids in mature potato tubers stored under natural light author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Bragantia

Print version ISSN 0006-8705On-line version ISSN 1678-4499

Bragantia vol.44 no.1 Campinas  1985

http://dx.doi.org/10.1590/S0006-87051985000100016 

ARTIGOS

 

Chocolate das bagas e clorose foliar: anomalia da videira causada por deficiência de boro1

 

Internal browning ("chocolate") and leaf chlorosis of the 'pink Niagara' grafe, a boron deficiency anomaly

 

 

Hugo KuniyukiI, 2 ; Maurilo Monteiro TerraII, 2; Rúter HiroceIII; Álvaro Santos CostaI

ISeção de Virologia Fitotécnica, Instituto Agronômico (IAC), Caixa Postal 28, 13 100 - Campinas (SP)
II
Seção de Viticultura, IAC
III
Seção de Química Analítica, IAC

 

 


RESUMO

A anomalia do cultivar de videira Niagara Rosada, caracterizada por sintomas de clorose nas folhas, chocolate das bagas e cachos malformados, não é de natureza virótica, de acordo com resultados de testes de transmissão e de perpetuação. Essa anomalia, presente em áreas definidas de alguns vinhedos de Indaiatuba e Jundiaí (SP), está associada à deficiência nutricional de boro. O teor médio de boro em amostras de plantas afetadas de 'Niagara Rosada' (18 ppm no limbo e 7 ppm nos frutos) foi menor do que nas de plantas normais (24 ppm no limbo e 10 ppm nos frutos) das mesmas plantaçoes; um material coletado de um vinhedo bastante afetado mostrou 13 e 1 ppm respectivamente no limbo e nos frutos de plantas deficientes contra 20 e 6 ppm nos de plantas sem sintomas. Amostras de três vinhedos vizinhos sem essa anomalia apresentaram um teor médio de 35 ppm no limbo. As do porta-enxerto 'Traviú' com clorose e sem clorose mostraram 16 ppm e 43 ppm de boro respectivamente. A aplicação de bórax, nas doses de 5, 10 e 20g por planta, 1ogo após a poda de inverno, ou pulverização de ácido bórico nas concentraçoes de 0,3% e 0,6% sobre a folhagem, durante o início do florescimento e durante a fase de uva chumbinho, permitiram controlar a anomalia nas condições de campo. Foi notada resposta favorável por um ciclo vegetativo, pelo menos, indicando controle por efeito residual de uma aplicação.

Termos de indexação: Vitis spp., anomalia fisiológica, micronutriente, controle.


SUMMARY

The 'pink Niagara' grape (V. labrusca L. x V. vinifera L.) anomaly characterized by leaf chlorosis and "chocolate" (internal browning) of the young fruit, at first thought to be a virus disease, has been found to be a result of boron deficiency. The anomaly was first recorded in 1974. It occurs in patches in vineyards of Indaiatuba and Jundiaí, two grape-growing counties of the State of São Paulo, Brazil. Affected plants show yellowing between the primary and secondary veins of the upper leaves and malformed clusters, with normal-sized berries and small ones. Some small fruits are slightly elongated and show dark areas on the skin; many have dark brown pulp, easily visible when they are still green. Severely affected plants become stunted. Chemical analysis showed a lower boron content in the affected plants (18 ppm in the leaf blades and 7 ppm in the fruit) than in normal ones (24 ppm in the leaf blades and 10 ppm in the fruit). Leaf samples from three nearby vineyards without the anomaly presented a boron content of 35 ppm. Leaf blades from abnormal and normal 'Traviú' rootstocks (V. riparia Michaux. x V. rupestris Scheele x V. cordifolia Michaux., '106-8') had 16 ppm and 43 ppm B, respectively. An efficient control of the anomaly was got with borax, applied after prunning to affected plants at the rates of 5, 10 and 20 g per plant, or with boric acid at the concentrations of 0.3 and 0.6%a sprayed at flowering and when the fruits were small. There was a residual effect of the treatment on the anomaly for at least one more season.

Index terms: Vitis spp., physiologic anomaly, micronutrient, control.


 

 

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

 

 

REFERÊNCIAS BIBLIOGRÁFICAS

BRANAS, J. & BERNON, G. Le plomb de la vigne, manifestation de la carence de bore. Comptes Rendus d'Academie d'Agriculture de France, Paris, 40:593-596, 1954.        [ Links ]

CAUDWELL, A. Identification d'une nouvelle maladie a virus de la vigne, la "Flavescence dorée". Étude des phénoménes de localisation des symptômes et de rétablissement. Paris, I.N.R.A., 1964. 193p. (Annales des Épiphy ties, v. 15, n°. hors série I)        [ Links ]

CHRISTENSEN, L.P., KASIMATIS, AN. & JENSEN, F.L. Grapevine nutrition and fertilization in the San Joaquim Valley. Berkeley. University of California, Division of Agricultural Sciences, 1978. 40 p.        [ Links ]

COOK, J.A., LYNN, CD. & SISSLER, J.J. Boron deficiency in California vineyards. American Journal of Enology and Viticulture, Davis, 11:185-194, 1960.        [ Links ]

DIAS, H.F. Mechanical transmission of viruses to herbaceous hosts, In: INTERNATIONAL CONFERENCE ON VIRUS AND VECTOR ON PERENNIAL HOSTS, WITH SPECIAL REFERENCE TO VITIS, Davis, 1965. Proceedings. Davis, University of California, Division of Agricultural Sciences, p. 235-247.        [ Links ]

GOODING, G.V. & TELIZ, D. Grapevine yellow vein. In: FRAZIER, N.W. ed. Virus diseases of small fruits and grapevines. Berkeley, University of California, Division of Agricultural Sciences, 1970. p.238-241.s        [ Links ]

HEWITT, W.B. Pierce's disease of Vitis species. In:FRAZIER, N.W. ed. Virus diseases of small fruits and grapevines. Berkeley, University of California, Division of Agricultural Sciences, 1970. p.196-200.        [ Links ]

MALAVOLTA, E. Manual de adubação química. 2.ed. São Paulo, Ceres, 1967. 606p.        [ Links ]

WINKLER, A.J., COOK, J.A., KLIEWER, W.M. & LIDER, L.A. General viticulture. 2. ed. Berkeley, University of California Press, 1974. 710p.        [ Links ]

 

 

Recebido para publicação em 27 de janeiro de 1984.

 

 

1 Trabalho apresentado, em parte, no V Congresso Paulista de Fitopatologia, 18-20 de janeiro de 1982, Piracicaba (SP).
2 Com bolsa de supiementação do CNPq.

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License