The spatial pattern of “Mal de Río Cuarto del Maíz” (Rio Cuarto Corn disease) in corn fields

Authors

  • Eduardo V. Trumper Sección Entomologla, E.E.A. Manfredi - I.N.T.A., Ruta Nacional Nro. 9, Km 636, (5988) Manfredi, Córdoba, Argentina
  • David E. Gorla Laboratorio de Ecologta de Insectos, Fac. de Cs. Agropecuarias, Universidad Nacional de Córdoba, Avda. Valparaíso s/n (Campo Experimental), (5000) Córdoba, Argentina
  • Mariano P. Grilli Laboratorio de Ecologta de Insectos, Fac. de Cs. Agropecuarias, Universidad Nacional de Córdoba, Avda. Valparaíso s/n (Campo Experimental), (5000) Córdoba, Argentina

Abstract

The spatial pattern of Mal de Río Cuarto del maíz (Rio Cuarto Corn Disease) was studied during three growing seasonsin Córdoba Province, Argentina.The study combined ELISA determinations in experimental plots outside the endemic area during the first growing season with symptom assessments in that situation and in commercial plots in or near the endemic area during the two subsequent growing seasons. For the experimental plots studied during the first growing season, ELISA data indicated i random spatial pattern of the disease, whereas symptoms data, analyzed by ordinary runs test, showed only 13 out of 120 simples with clumped pattern. Symptom analysis during the nexttwo seasons revealed only 3 of 23 samples with significant aggregation. No edge-to-center disease gradients were identified, suggesting that the vector does not disperse from nearby sources. Our results agree with the hypothesis of a random spatial pattern of this disease, consistent with i monocyclic nature.

References

Campbell, C.L. and L.V. Madden. 1990. Introduction to plant disease epidemiology. John Wiley and Sons, New York, 532 pp.

Campbell, C.L., W.R. Jacobi, N.T. Powell andC.E.Main.1984. Analysis of disease progresion and the randomness of occurrence of infected plants during tobacco black shank epidemics. Phytopathology 74:230-235.

Clark, M. and A. Adams. 1978. Characteristic of the microplate methods of enzime-linked immunosorbent assay for the detection of plant viruses. J. Gen. Virol. 34:475-483.

Conci, L.R. and C. Marzachi. 1993. Avances en la caracterización molecular del genoma del virus causal del “Mal de Rio Cuarto”. Actas del Workshop “Mal de Rio Cuarto del Maiz”, Córdoba, Argentina. Pp. 27-28.

Conti, M. 1984. Epidemiology and vectors of plant reolike viruses, pp: 111-139. In: Harris, K.F. (ed.). Current topics in vector research, Vol. 2. Praeger Publisher, New York.

Gimenez Pecci, M.P. and G. Truol. 1991.Infecciónmixta producida por el MaizeRough Dwarf Virus(MRDV) y el Maize Dwarf Mosaic Virus (MDMV-A) en cl cultivo de maiz (Zea mays L.). Actas del 1 Taller de actualización sobre “Mal de Río Cuarto del maíz”, Pergamino, Argentina, pp. 49-50.

Madden, L.V. 1988. Dynamic nature of within-field disease and pathogen distributions, pp. 96-126. In: Jeger, M.1. (ed.). The spatial component of plant disease epidemics. Prentice Hall Inc., Englewood Cliffs.

Madden, L.V., R. Louie, J.J. Abt and J.K. Knoke. 1982. Evaluation of testsfor randomness of infected plants. Phytopathology 72:195-198.

Madden, L.V. and C.L. Campbell. 1986. Descriptions of virus disease epidemics in time and space, pp. 273- 293. In: McLean, G.D., R.G. Garret and W.G. Ruesink (eds.). Plant virus epidemics. Monitoring, modelling and predicting outbreaks. Academic Press, Sydney.

Madden, L.V., K.M. Reynolds, T.P. Pirone and B. Raccah. 1988. Modeling of tobacco virus epidemics as; spatio-temporal autoregressive integrated moving-average processes. Phytopathology 78:1361-1366.

Madden, L.V., J.K. Knoke and R. Louie. 1990. Spread of Maize Chlorotic Dwarf Virus in maize fields by its leafhopper vector, Graminella nigrifrons. Phytopathology, 80:291-298.

Mead, R., R.N. Curnow and A.M. Hasted. 1993.Statistical methods in agriculture and experimental biology. Chapman and Hall, 415 pp.

Remes Lenicov de, A.M.M., A. Teson, E. Dagoberto and N. Huguet. 1985. Hallazgo de uno de los vectores del “Mal de Rio Cuarto” del maiz. Gaceta Agronomica 5:251-258.

Retries Lenicov de, A.M.M., E. Virla and E. Dagoberto. 1991. Cambios estacionales en las poblaciones del vector del Mal de Rio Cuarto (Delphacodes kuscheli Fennah) en cultivos de avena y sus malezas circundantes en Sampacho, Córdoba. Actas del I Taller de Actualización sobre Mal de Rio Cuarto, Pergamino, Argentina. Pp. 116-129.

Trumper, E.V., M.P. Grille and D.E. Gorla. 1991. Ecología de delfácidos y epidemiologia (lei Mal de Río Cuarto. Actas del I Taller de Actualización sobre Mal de Rio Cuarto, Pergamino, Argentina. Pp. 5-15.

Trumper, E.V. 1996. Modelos dc epidemiologia matemática aplicados al estudio del sistema Virus MRC- maiz-Delphacidae (“Mal de Rio Cuarto”). Tesis doctoral. Universidad Nacional de Córdoba, 79 pp.

Valdivia, M.B., L. Conti and S.F. Nome. 1990.Distribución espacial delMRDV-RCdelmaiz.RIA20:170-180.

van den Werf, W. and W. Riesebos. 1990. Modelsin the epidemiology of beet yellowing viruses.Proceedings of 53rd winter congress. International Institute for Sugar Beet Research. Bruxelles, Pp. 333-353.

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Published

1996-12-01

How to Cite

Trumper, E. V., Gorla, D. E., & Grilli, M. P. (1996). The spatial pattern of “Mal de Río Cuarto del Maíz” (Rio Cuarto Corn disease) in corn fields. Ecología Austral, 6(2), 131–136. Retrieved from https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1658

Issue

Vol. 6 No. 2 (1996)

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Articles

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