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Manuscript Details
Vol. 7 Issue 1 June 2016
Case report
Seasonal dynamics of powdery mildew of mango and its management under subtropics
P K Shukla*, Tarun Adak and Gundappa
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Abstract:

Case Report

 

GERF Bulletin of Biosciences

June 2016, 7(1):21-25

Published Online: 30 June 2016

 

 

Seasonal dynamics of powdery mildew of mango and its

management under subtropics

 

P K Shukla*1, Tarun Adak and Gundappa

 

1, 3 Division of Crop Protection, Central Institute for Subtropical Horticulture, Rehmankhera, Lucknow-226101, Uttar Pradesh, India

2 Division of Crop Production, Central Institute for Subtropical Horticulture, Rehmankhera, Lucknow-226101, Uttar Pradesh, India

 

*Corresponding author: pkmush@gmail.com

 

Abstract

 

Mango is one of the most important fruit crop in SAARC countries, which has severely been affected by powdery mildew during panicle development and fruit set stages, which in turn reduces its production and productivity. The disease is caused by Oidium mangiferae Berthet and is reported from more than 35 countries in the world and it may reduce yields as much as 90 per cent. It is widely distributed and can also be a major foliar disease of mango. The flowering stage, however, appears to be the most critical for infection; little infection occurs before flower opening or during fruit-set. Conidia are wind disseminated and are released on a diurnal basis. Peak spore release during 11.00 to 16.00 h, was positively correlated with temperature and negatively correlated with humidity, vapour pressure deficit and leaf wetness. The cardinal temperatures for conidium germination are 9, 32 and 23 °C. Conidia germinate at wide range of relative humidity (as low as 20%). Infection can take place within 5-7 h, and conidia are produced within 5 days of infection. Disease development occurs between 10-31 °C and 60-90% relative humidity. Infestation of the bloom clusters by powdery mildew causes flowers and young fruits to drop and direct yield loss.

 

Key Words: Powdery mildew, mango, weather, growing degree days, management

 

 © Shukla et al., 2016; licensee Green Earth Research Foundation. This article distributed under terms of Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/). Which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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