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Table 1 Symptomatology observed in the weeds: Rumex crispus, Digitaria horizontalis, Persicaria nepalensis, and Thunbergia alata under field conditions

From: Phytopathogenic fungi with potential as biocontrol agents for weeds of importance in crops of Antioquia, Colombia

Host weed Symptom Isolate code
Description Appearance
R. crispus Slightly round lesions dark brown necrotic in the center concentric in appearance rough in texture and often with surrounding chlorotic areas R14
Small circular spots reddish or purple randomly distributed throughout the leaf tissue and plant stem smooth in texture and often with a small whitish center R15
D. horizontalis Round-shaped dark brownish lesions with a concentric appearance and slightly sunken texture surrounded by a chlorotic halo D30
P. nepalensis Small spots of purplish or purple color circular in shape with a whitish center of smooth texture P4
Semicircular lesions with the appearance of concentric rings light brown in the center slightly sunken and surrounded by a purplish color growing rapidly on the leaf tissue P7
T. alata Necrotic lesions of irregular shape rough in texture and black or sometimes dark brown eventually surrounded by a chlorotic halo T7
Spots initially yellow in color and semicircular or irregular in shape which grows until they coalesce and make the tissue appear chlorotic. Advanced lesions darken to brown with a defined center T10