Cactus virus

Anon, Viruses of plants. Descriptions and lists from the VIDE database. Plant Pathology. CABI, Undated. Plant Disease. One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using. Toggle navigation. Datasheet Cactus virus X. Don't need the entire report? Generate a print friendly version containing only the sections you need. Generate report. Expand all sections Collapse all sections.

Distribution Table Top of page The distribution in this summary table is based on all the information available. By entering your email, you consent to receive communications from Penn State Extension. View our privacy policy. Thank you for your submission! Home Christmas Cactus Diseases. Christmas Cactus Diseases.

As the tissue dies, it becomes tan and falls away, removing tissue from the edge to the heavy center vein tissue. Fusarium oxysporum Do not injure plants at the soil line. Apply a fungicide to protect healthy plants. Botrytis Blight Flowers die and become covered with gray fungal growth. Under very high humidity conditions, stems may be attacked.

Botrytis cinierea Heat and ventilate to maintain low relative humidity in the greenhouse. Impatiens Necrotic Spot Virus Plants may be symptomless or may be yellowed, spotted, or wilted.

Impatiens necrotic spot virus Holiday cactus can be symptomless carriers of this virus and serve as a source of this virus for other plants in the greenhouse. As the disease evolves, the plant turns gray, the stem wrinkles and then rots.

The disease affects the veins, blocking the sap circulation throughout the plant. Therefore, the water and mineral elements supply is defective and the plants are weak. The cactuses have symptoms which are similar to the symptoms produced by pathogens, but the following are caused by the main physical factors. These play a crucial part in the growth and development of the Cactaceae plants.

The most common non-infectious diseases are:. The cactuses are warmth loving plants; therefore, they cannot stand low temperatures. Some cactus species can withstand mild freezes, with the condition that the temperatures decrease slowly. The plants adapt their metabolism and can withstand below 0 temperatures. After it freezes, the entire plant can turn into a viscous mass. The plants belonging to the Cactaceae family are resilient to severe heatstrokes and they can be affected by sunburns only is they have been kept in shadowy placed for a long time.

Due to this, the plants which have been kept in shadowy places will have to be gradually exposed to sunlight. The plants will recover from minor sunburns if they will be immediately put back to shadowy places. If the cactuses have been severely affected by sunburns, the epidermis is destroyed. In order to save the affected cactuses, the affected areas must be cut off.

Balanced fertilization is an important step in planting and taking care of cactuses. This is why the compost needs to contain both macro and micro-elements. For example, only if nitrogen compost is used, the vegetative mass will lushly flourish, but the plant will be less resilient to diseases and pests.

In the regions of origin, these plants can live without water for long periods of time. Excessive watering can lead to soaking and rotting of the plants. This phenomenon is caused physiological rotting. On the other hand, watering the plants when they have open wounds is forbidden.

After certain parts of the plants have been removed, the resulted wounds need time to heal up. If water is applied to those wounds, the wounds will heal up slowly or the area can begin to rot. The larvae feed by stinging the cactus roots, causing physiological disorders. The wounds created by this pest can help other pathogens get inside the plant.