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Control Of Phytophthora Rot And Crown Root Rot Of Sweet Peppers By
Water-Source And Irrigation Schedule Practices
Messaouda Benabdelkader and Abdelhadi Guéchi
Laboratory of
Phytopathology and Microbiology, Faculty of Sciences, University Ferhat ABBAS,
19000, Setif, Algeria.
E-mail: guechi.abdelhadi@caramail.com
Abstract
A field study was carried out at Hamma-Bouzianem Constantine east of Algeria.
The purpose of the experiment was to investigate the effect of the water source
and irrigation schedule on controlling Phytophthora infestans root and
crown rot of sweet peppers Capsium anuum. In naturally infested soil, the
number of young infected plants decreased when the water source Hamma bit was
used and irrigation every 14 days, reaching an incidence of 18 and 22.5%,
respectively. When irrigation was applied every 7 days, incidence of young
infected plants increased to 40.25 and 35.5%, with water source Hamma-river and
irrigation schedule, respectively. The irrigation with river water polluted with
pathogens for a long time (every 7 days) led to increased infection of stem
bases. Control and reduction of disease severity was obtained by following an
schedule every 14 days, and applying water from Hamma bit.
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