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Early and Late Leaf Spots of Groundnut. Information Bulletin No.21

OAR@ICRISAT

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Relation http://oar.icrisat.org/821/
 
Title Early and Late Leaf Spots of Groundnut. Information Bulletin No.21
 
Creator McDonald, D
Subrahmanyam, P
Gibbons, R W
Smith, D H
 
Subject Groundnut
 
Description Early and late leaf spots, caused respectively by Cercospora arachidicola and Phaeoisariopsis personata (until recently known as Cercosporidium personatum), are the most common and serious diseases of groundnut , worldwide. Singly or together they can cause losses in pod yield of over 50%; in areas where rust disease is also present a combined attack of foliar diseases can cause yield losses in excess of 70%. The text, supported by color illustrations, describes disease symptoms and explains how the two leaf spots can be differentiated. The morphology and taxonomy of each pathogen are also described, and disease cycles are outlined. An integrated approach to disease management is advocated. Cultural control measures are suggested, fungicides commonly used for control are briefly discussed, and different application methods are assessed. Biological control is considered as a future possibility, and several hyperparasites are described. The prospects for breeding resistant cultivars are discussed. As agronomic, socioeconomic, and environmental factors determine how cul tural , chemical, and biological measures can best be integrated into effective disease management systems, it is hoped that the bulletin will assist extension workers in evolving control methods well suited to local disease situations.
 
Publisher International Crops Research Institute for the Semi-Arid Tropics
 
Date 1985
 
Type Monograph
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/821/1/RA_00080.pdf
McDonald, D and Subrahmanyam, P and Gibbons, R W and Smith, D H (1985) Early and Late Leaf Spots of Groundnut. Information Bulletin No.21. Technical Report. International Crops Research Institute for the Semi-Arid Tropics.