Current Status of Verticillium Wilt of Cotton in Southern Spain: Pathogen Variation and Population in Soil

  • M. A. Blanco López
  • J. Bejarano Alcazar
  • J. M. Malero-Vera
  • R. M. Jiménez-Diaz
Conference paper
Part of the NATO ASI Series book series (volume 28)

Abstract

Aproximately 80% of the total national acreage of cotton (Gossypium hirsutum L.) is grown under irrigation in the Guadalquivir Valley of Andalucia, southern Spain. In this region, cotton has usually been grown in rotation with crops such as corn, sunflower, sugar beet and Wheat. However, high yields and income obtained by farmers with cotton crops as compared to other crops, have led to shorten rotations and intensified cotton cultivation. This trend has been associated with increased attacks by pests and diseases, of which Verticillium wilt (VW) induced by Verticillium dahliae Kleb, is the most important. Recently, VW epidemics have become highly severe in the lower Guadalquivir Valley (Marismas) as a result of high inoculum densities (ID) in the soil and/or the existence of a defoliation-inducing pathotype. These severe epidemics are limiting the use of cotton as a crop in many fields at Marismas.

Keywords

Sugar Clay Corn Agar Polyethylene 

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References

  1. Butterfield EJ and DeVay JE (1977) Reassessment of soil assays for Verticillium dahliae. Phytopathology 67:1073–1078CrossRefGoogle Scholar
  2. Schnathorst WC (1973) Additional strains of Verticillium dahliae from cotton in California. In: Ariz Natt Cotton Counc (ed) Proc Beltwide Cotton Prod Res Conf, Phoenix, pp 22–23Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • M. A. Blanco López
    • 1
  • J. Bejarano Alcazar
    • 1
    • 2
  • J. M. Malero-Vera
    • 1
    • 2
  • R. M. Jiménez-Diaz
    • 1
  1. 1.Departamento de AgronomiaUniversidad de CórdobaCórdobaSpain
  2. 2.Departamento de ProtecciónVegetal DGIEA, Junta de AndalucíaSpain

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