If you see many small black spots under the leaves on pears, quince, apple trees, eggplants and the leaves on the top are discoloured and lose their green colour, then you have an infestation of Tingidae (Lace Bugs). The Tingidae family of insects, often referred to as Lace Bugs, are very small insects that infest […]
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2 mobile apps that really look like magic regarding plant identification. These apps use artificial intelligence and machine learning to identify from a photo what a plant is suffering from and what kind of plant it is. Especially the second app, I have tried it many times with amazing results. It’s almost like nagic! Plantix
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Powdery mildew of tomato attacks tomato, pepper and eggplant, okra, artichoke and cucumber. Scientific name: Oidium neolycopersici, Erysiphe orontii, Leveillula tauricaGreek name: Ωίδιο Ντομάτας Symptoms The symptoms are most pronounced on tomatoes and peppers, while pale yellow spots are caused on eggplant and cucumber. The spots later become necrotic. The powdery mildew of tomato fungal
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Powdery mildew of grapes is one of the most serious diseases of the vine and is widespread in all wine-growing regions of the world. The disease was first described in North America, while in Europe it appeared in 1845. In Greece, where vines are grown, the disease is known by many common names (Στάχτωμα, θειαφασθένεια,
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In cucurbits (cucumbers, pumpkins) we find powdery mildew of cucurbits infestations by all three pathogens, which can often coexist. Scientific name: Erysiphe cichoracearum, Sphaerotheca fuliginea, Leveillula taurica, Erysiphe cichoracearum, Sphaerotheca fuliginea, Leveillula taurica, Erysiphaceae, Erysiphales, Podosphaera xanthiiOther name: Powdery MildewsGreek name: Ωίδιο Αγγουριάς Symptoms In infestation by Erysiphe cichoracearum, small, round spots appear at the
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Phomopsis disease is widespread in almost all wine-growing regions of Greece. In the last decades, it began to attract considerable attention of all those involved in viticulture, because it can cause great damage: necrosis of heads and stems. Scientific name: Phomopsis viticola plus Phoma viticola, Phomopsis ampelopsidis Fusicoccum viticolum, CoelomycetesGreek name: Symptoms The shoots, vines
Collar rot disease occasionally causes severe damage to irrigated fields and can develop intensively in silos. Scientific name: Corticium rolfsii, Athelia rolfsii, Pellicularia rolfsii, Sclerotium rolfsiiOther name: Sclerotial blight, stem rot, southern blight, bed rot, cottony rot, Sclerotium wilt, collar rot, crown rot, fire fang root rot, foot rot, southern wiltGreek name: Σηψιρριζία από Σκληρωτίαση
Penicillium fruit rot is a postharvest rot that causes very severe damage (up to 100%) to citrus, apple, vine and vegetable crops. Additional damage is also caused by ethylene produced by the pathogenic fungi, which, because it increases fruit respiration, reduces the lifespan of healthy fruit in the same storage area as the affected fruit.
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Tomato late blight attacks the tomato fruits and green parts of tomatoes. Scientific name: Phytophthora infestansOther name: Late blightGreek name: Περονόσπορος της Ντομάτας Symptoms of tomato late blight Tomato late blight attacks the tomato fruits and green parts of tomatoes. The infestation starts on the lower leaves, where yellowish irregularly shaped spots (“oil spots”) appear.
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Potato late blight attacks the green parts and tubers of potatoes. Scientific name: Phytophthora infestansOther name: late blight, potato blightGreek name: Περονόσπορος της Πατάτας Potato late blight symptoms Potato late blight attacks the green parts and tubers of the potato. The infestation starts on the lower leaves, where yellowish, irregularly shaped spots appear. These areas
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Downy mildew of cucurbits causes severe to devastating infestations on cucumber. Scientific name: Pseudoperonospora cubensisGreek name: Περονόσπορος Κολοκυνθοειδών, Ψευδοπερονόσπορος Symptoms On leaves it causes chlorosis in extensive angular areas between nerves. As the infestation progresses, the leaves dry out and fall off. Whole plants may also dry out. With favorable moisture conditions the white exanthem
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Grapevine downy mildew is the most important problem in viticulture worldwide, because it can cause total destruction of production. In Greece, it appeared for the first time in 1881 in Messinia. Since then it has been endemic in Greece, threatening especially areas with high atmospheric humidity conditions (e.g. western Peloponnese). Scientific name: Plasmopara viticolaOther name:
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Blossom end rot is a common problem that occurs on tomatoes, but also on peppers and eggplants. Other names: Black rot, Dry rotOther names: Ξηρή Σήψη, Ξηρή Κορυφή, Τάπωμα Symptoms Blossom end rot is a common problem that occurs on tomatoes, but also on peppers and eggplants. The appearance of the problem starts with a
The disease of Eutypa dieback (Gummosis) is very widespread in Greece and causes very serious damage to stone fruits, especially to apricot (die back, gummosis), vine (dying arm), citrus (especially lemon) and pistachio tree. Scientific name: Eutypa lata (Eutypa armeniacae), Diatrypaceae, Cytosporina lata (Libertella blepharis)Other name: Die back, Gummosis, Dying armGreek name: Νέκρωση Βραχιόνων Symptoms
In Greece, bacterial soft rot can cause significant damage due to the favorable conditions (high temperature, heavy irrigation). Scientific name: Erwinia carotovoraOther name: Soft rot, stem rot, bacterial stem rotGreek name: Μαλακή Σήψη Τεύτλων Symptoms Bacterial soft rot affects the roots and stems. A pinkish-brown rot develops on the affected roots, which then takes over
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Tomato leaf mold is met more often in the greenhouse and even more so in the winter months. The lower leaves are affected first, where irregular chlorotic (yellow-green) spots appear. Scientific name: Mycorellosiella fulva (syn. Fulvia fulva, syn. Cladosporium fulvum)Other name: Leaf moldGreek name: Κλαδοσπορίωση Ντομάτας Symptoms The lower leaves are affected first, where irregular
Scab of cucurbits disease affects all cucurbits (cucumber, melon, pumpkin, watermelon). The disease is particularly severe in cucumbers. Scientific name: Cladosporium cucumerinumGreek name: Κλαδοσπορίωση Αγγουριάς Symptoms Scab of cucurbits causes spotting on leaves and fruits. The fungus survives as a saprophyte in the soil, also in plant debris and in the greenhouse, in various materials.
Cercospora leaf spot is the most serious beet disease in Greece and other countries because it destroys the plants causing significant losses in weight and sugar content. In Greece the damage can reach 40-50% of sugar production. Scientific name: Cercospora beticolaOther names: Black mold, Okra leaf spotGreek name: Κερκόσπορα των Τεύτλων Symptoms In late May-early
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Rhizoctonia root rot is a disease that occurs to a small extent throughout Europe. Beet destruction can be total when infection occurs early. Scientific name: Corticium solani, Rhizoctonia solani var. betaeOther name: Crown rotGreek name: Καστανή σήψη τεύτλων Symptoms Rhizoctonia root rot disease, caused by a soil fungus, occurs in circular patches within sugar beet
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Violet root rot is a very widespread disease in all areas where beet and carrots are grown and in all soil types. Its control is considered necessary because the fungus continues to grow on the plants after harvest, infecting very quickly neighboring roots and causing significant losses due to rot. Scientific name: Helicobasidium purpureum, Rhizoctonia
