Abstract
Abstract A description is provided for Didymosphaeria arachidicola . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Arachis hypogaea . DISEASE: Net blotch (55, 3822), web-blotch (Pettit, Taber & Harrison, 1973) or leaf blotch of peanut (54, 3573). At first lesions are small, diffuse specks or streaks merging in an irregular pattern covering large areas of the leaflet. Initially lesions are superficial and confined to the adaxial surface but later spreading to the lower surface. As the disease progresses the net appearance is lost and a large reddish-brown blotch results. Often several such lesions coalesce covering the entire leaflet. Severe infection leads to defoliation. GEOGRAPHICAL DISTRIBUTION: Africa (Zimbabwe, formerly Rhodesia, South Africa, Mauritius); Australasia (Australia, Queensland); Europe/Asia (USSR, Caucasus, Republic of Georgia); North America (USA); South America (Argentina,? Brazil). TRANSMISSION: Presumably by conidia and ascospores dispersed by rain splash during wet weather or heavy dews. It is also possible that conidia and ascospores could be carried over on crop residues and debris in soil.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
