Epidemiology and strategies for chemical management of powdery mildew in mango

Authors

  • Amado Pérez-Rodríguez Colegio de Postgraduados, Km 36.5, Carretera México-Texcoco, Caja Postal 56230, Montecillo, Estado de México, México.
  • Abraham Monteón-Ojeda Colegio de Postgraduados, Km 36.5, Carretera México-Texcoco, Caja Postal 56230, Montecillo, Estado de México, México.
  • José Antonio Mora-Aguilera Colegio de Postgraduados, Km 36.5, Carretera México-Texcoco, Caja Postal 56230, Montecillo, Estado de México, México.
  • Elías Hernández-Castro Universidad Autónoma de Guerrero, Unidad Académica de Ciencias Agropecuarias y Ambientales, Carretera Iguala-Tuxpan, Km 2.5, Caja Postal 40101, Iguala, Guerrero, México.

DOI:

https://doi.org/10.1590/S1678-3921.pab2017.v52.24981

Keywords:

Mangifera indica, Oidium mangiferae, epidemics, fungicide resistance, integrated pest management, multisite fungicides

Abstract

The objective of this work was to evaluate phytosanitary strategies for the chemical control of powdery mildew (Oidium mangiferae) in mango, based on the alternation of active ingredients with different modes and sites of action, and to determine the environmental and epidemiological conditions that favor the development of the disease. The experiment was conducted in Guerrero, México, in commercial orchards, within a program for the development of fungicide spraying strategies. Epidemic curves were used on temporal analyses of the disease for: incidence; area under disease progression curve (AUDPC); severity; and conidial seasonality and its relationships with meteorological parameters. The disease was better controlled with the application of systemic fungicide followed by contact fungicide with multisite activity. The first symptoms appeared 30 days after the issuance of shoots, and the most susceptible phenological (critical) stages were at full bloom and at the onset of fruit with 8–15 mm. Optimum conditions for the development of powdery mildew, which maximizes the density of airborne spores, are temperatures higher than 30°C and relative humidity over 90%.

Author Biography

Abraham Monteón-Ojeda, Colegio de Postgraduados, Km 36.5, Carretera México-Texcoco, Caja Postal 56230, Montecillo, Estado de México, México.

Universidad Autonoma Chapingo Departamento de parasitologia Agricola Colegio de Postgraduados Instituto de fitosanidad-Fitopatologia

Downloads

Additional Files

Published

2017-10-11

How to Cite

Pérez-Rodríguez, A., Monteón-Ojeda, A., Mora-Aguilera, J. A., & Hernández-Castro, E. (2017). Epidemiology and strategies for chemical management of powdery mildew in mango. Pesquisa Agropecuaria Brasileira, 52(9), 715–723. https://doi.org/10.1590/S1678-3921.pab2017.v52.24981

Issue

Section

PHYTOPATHOLOGY