Phytophthora parastica (Dastur) var. nicotianae (Breda de Haan) Tucker – CAUSING AGENT OF THE BLACK SHANK DISEASE OF TOBACCO

Tashkoski, Petre (2003) Phytophthora parastica (Dastur) var. nicotianae (Breda de Haan) Tucker – CAUSING AGENT OF THE BLACK SHANK DISEASE OF TOBACCO. Tobacco, 53 (11-12). pp. 345-355. ISSN 0494-3244

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Official URL: http://www.tobaccobulletin.mk/

Abstract

Based on our investigations, the following conclusion was drawn: -The pathogen of Phytophthora parasitica var. nicotianae is present in severel tobacco producing regions in R. Macedonia (Prilep, Kumanovo, Strumica). -This is a soilborne pathogen which infects the root and the aboveground part of tobacco stalk, and during periods of rainy weather, the lower leaves of the plant may also be infected. -The mycelium develops in tobacco plant tissues, where it stays after the end of its growing period. -The fungus owerwinters in a form of chlamydospores in the plant debris, and when favorable conditions appear, the chlamydospores germinate into hyphae or sporangia, which make the primary infections. -The pathogen is spread by the infected plant debris, by infested soil, irrigation water, farm equipment and by root nematodes. -To prevent the occurrence and distribution of the disease it is necessary to apply crop rotation, adequate cultural practices, resistant tobacco varietes, nematodes control and chemical protection. -Of the investigated in vitro and in vivo applied chemicals, the highest effect was obtaind with application of the metalaxyl-based fungicide Ridomil MZ72.

Item Type: Article
Subjects: Scientific Fields (Frascati) > Agricultural Sciences > Agriculture, forestry and fisheries
Divisions: Scientific Tobacco Institute
Depositing User: Ms Biljana Jordanoska
Date Deposited: 03 Nov 2016 19:47
Last Modified: 03 Nov 2016 19:47
URI: http://eprints.uklo.edu.mk/id/eprint/374

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