In addition, the local weather conditions favor the development of thrips in Central Greece.
After the heavy rains, downy mildew infestations have been observed in outdoor zucchini crops in the prefectures of Magnesia, Karditsa, Larissa, Trikala and Fthiotida, while powdery mildew infestations continue in crops in the prefectures of Magnesia, Karditsa, Larissa and Larissa.
At the same time, in areas of the Prefectures of Magnesia, Karditsa, Servota, Trikala, Larissa, and Fthiotida, where heavy rainfall prevailed, downy mildew is expected in greenhouse tomato crops, while the arrests of the prosperous Tuta Absoluta in the network of pheromones continue.
Also, in outdoor table tomato crops in the Prefectures of Karditsa, Magnesia, Trikala and in Palama, Fthiotida, there are already intense infestations by downy mildew, mildew and Tuta Absoluta.
All the announcements of the Regional Center for Plant Protection of Volos
PUMPKIN OUTDOOR
Downy mildew (Pseudoperonospora cubensis
Infections from downy mildew were found in the outdoor crops with zucchini after the heavy rains in the Prefectures of Magnesia, Karditsa, Larissa, Trikala and Fthiotida.
Symptoms: Angular yellow spots appear on the upper surface of the leaves and whitish rashes form on the lower surface of the leaf.
Recommendations
1) Removal of infected leaves from plants
2) Spraying the plants only after the detection of the pathogen with permitted plant protection products and repeating the spraying after 8 days
Powdery mildew (Leveillula tayrica, Erysiphe cichoracearu and Sphaerotheca fuliginea
Ovid infestations continue in zucchini crops in the N. Magnesia-KarditsaLarissa-Trikala and in Palama Fthiotida.
Symptoms: Appearance of small, white spots on the upper surface of leaves, stems and shoots, with characteristic floury rashes
Growing conditions: The fungus is a mandatory parasite, overwinters on live plants (crops or weeds), from which the initial infections originate. The conidia are transported by the wind. Infections are carried out at temperatures from 10-30 0C (optimum temperature 25-26 0C) and humidity 55-75%. The prevailing weather conditions are favorable for its development and transmission.
Combat:
1) Removal of infected leaves from plants.
2) Spraying the plants with permitted plant protection products. Repeat spraying after 8 days. Plant sprays should be started as soon as the first symptoms appear
Θρίπας (Thrips tabaci, Frankliniela occidentalis etc.
The weather conditions prevailing at this time favor the growth of the insect. Thrips damage plants by breaking down and sucking the skin cells of the leaves and is a carrier of viruses.
Recommendations: Spray the plants with permitted plant protection products
OUTDOOR TABLE TOMATOES
Downy mildew (Pseudoperonospora cubensis)
After the last rains, there are intense infestations by downy mildew on the outdoor table tomato crops in the Prefectures of Karditsa, Magnesia, Trikala and Palama, Fthiotida.
Growth conditions: The disease is favored by wet, rainy and cool weather. The prevailing weather conditions favor the growth and spread of downy mildew. The formation of sporangia requires a very high relative humidity of 80-100% and temperatures from 3-260C (excellent temperature 18-22 degrees Celsius).
Recommendations: Those growers who find symptoms of downy mildew infestation should protect their crop: with cover sprays with permitted, plant protection products. repeat after 8 days.
Powdery mildew (Leveillula tayrica)
Findings: In the areas where the outdoor table tomato is grown, it was found that the mildew infestation continues. The prevailing weather conditions are suitable for the growth of the fungus and its transmission.
Symptoms: On the upper surface of the leaves appear yellow-green or yellow irregular or angular spots with a diameter of 10-15 mm and on the lower surface a thin white to light brown rash appears. The conidia of the fungus are airborne and cause the spread of the disease.
Recommendations: Those producers who experience symptoms of mildew infections. to protect their crop: with cover sprays with permitted, plant protection products.
Tuta Absoluta
Findings: Captures of insect bites in the pheromone trap network continue and appear high. Observations on the crops revealed infestations on the fruits.
Recommendations: To perform interventions with appropriately approved for cultivation plant protection products.
GREENHOUSE TOMATOES
Downy mildew (Pseudoperonospora cubensis)
In the areas of the Prefectures of Magnesia, Karditsa, Servota of Trikala, Larissa, and Fthiotida. where heavy rainfall prevailed we expect downy mildew in greenhouse tomato crops.
Growth conditions: The pathogenic fungus begins to form rashes when low temperatures and high relative humidity prevail in the plant environment (humidity 80-95% and temperatures 6-26o C, with an excellent 18-22 οC).
Recommendations: Those growers who find symptoms of infestation to protect their crop with cover sprays (good washing of plants), with suitable permitted and selective for downy mildew plant protection products. Repeat spraying after 8 days .. Tuta Absoluta
Findings: Catching of insect bites in the pheromone trap network continues and high insect populations appear in greenhouse tomato crops.
Recommendations: To perform interventions with appropriately approved for cultivation plant protection products ..
