| Description: |
It is a mushroom which attaks Potato and Tomato.
SYMPTOMS ON POTATO.
The symptomatology is typical and takes place at the beginning on leaves; the disease manifests (itself) with some necrotic blakchish notchs, with division into concentric zones inside. Leaves tend to yellow and to necrotize. This symptomatology can be evidence on stalks and on petioles. On potatoes the disease manifests with some livid, brownish division into zones, depresses with necrosis of the amylpher parenchyma below.
SYMPTOMS ON TOMATO.
The symptomatology on leaves is like that describes for potato, with necrotic, roundish notchs that can attack stalks and leaf petioles too. On berries form wide, brown notchs, sunken with division into zones inside, covered by a particular blackish mould. On a level of these necrotic notchs, the fruit can be damaged and after can be subject to damp putrefactions. |
| Biology: |
| The "Alternariosi" can be preserve in the enviroment both like mycelium and like conidic form in the soil. The pathogenitic is favoured by climatic environment generally hot, with alternation of dry and damp periods; the infections elements are agamic spores which germinate only in the presence of a fine veil of water. |
| Damage: |
The struggle to the "Alternariosi" is both agronomic preventive and chimic, curative type.
Struggle to the "Alternariosi" on tomato.
- The agronomic treatments are: destructions of vegetable, remains infected, the use of certificate seed, the use of suitable rotations alternating no sensitive cultivations.
- The chemical treatments are: curinf of seeds; the chemical treatments specific with Clortalonil, Ditianon, Anolazina, Iprodione, Procimidone, Maneb, Mancozab, Propineb.
Struggle to the Alteraniosi on potato.
The agronomic treatments are the same of the tomato, but the chemical products are: Clortalonil, Ditianon, Ziram, Anilazina. |
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