Protection of cucumber seed plants from pests and diseases
Diagnosis and methods of accounting major diseases
The correct definition of the causes of the disease - the most important link in the whole system of protective measures . Table 12 shows signs of disease, the most common in the plant seeds of cucumber . Proposed keys allows you to quickly identify a particular disease, except when the diagnosis requires the use ofspecial methods of investigation (microscopic identification of the pathogen, serological tests, etc. . ) .
Signs of | Mosaic | Bacto | False Flour - a flock of dew | Necrosis | Brown spot | Gloeo444sporium444lagena444rium | Macro argument | Asko | Noninvasive infections attractive burns | Flour flock dew |
1 .Leaves mosaic painting | + | |||||||||
2 . For leaf spot | + | + | + | + | + | + | + | -f | ||
2 . 1 angular Spot | + | + | ||||||||
2 . 1 . 1 spots without plaque, the affected tissue falls | 4 | |||||||||
2 . 1 . 2 spots with grayish-purple bloom on the lower side | + | |||||||||
2 . 2 Spots rounded or slightly angular | + | + | + | + | + | + | ||||
2 . 2 . 1 spots are small, often merging | + | + | ||||||||
2 . 2 . 1 . 1 Spots without pellicle | + | |||||||||
2 . 2 . 1 . 2 spots with dark patina | + | |||||||||
2 . 2 . 2 Spots large | + | + | + | + | ||||||
2 . 2 . 2 . 1 Plaque as fine yellowish-brown pads | + | |||||||||
2 . 2 . 2 . 2 concentric Stains, plaque Black | + | |||||||||
2 . 2 . 3 spots very large, bright | + | + | ||||||||
2 . 2 . 3 . 1 spots on the fruit bodies in the form of black dots | + | |||||||||
2 . 2 . 3 . 2 spots irregularly shaped fruiting bodies are not available | + | |||||||||
3 . On leaves a white powdery coating | + |