Plants Diseases and Pests

A detailed catalog of diseases and pests causing problems to garden plants. Identify the problem. Learn about the disease or the pest. Learn how to remedy.

Grape thrip

Grape thrip

The grape thrip is an insect that attacks vine expanding buds, tender shoots, leaves, stems, anthotaxies and generally all tender vegetation. Scientific name: Drepanothrips reuteriOther name: Vine thripsGreek name: Θρίπας αμπέλου Damage Grape thrip attacks developing buds, tender shoots, leaves, pedicels, Anthotaxies and generally any tender vegetation. The larvae pupate the cells and suck out […]

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Zabrus

Zabrus

Zambrus mainly attacks potatoes, but also other plants of the Solanaceae family (e.g. tomatoes). It also attacks wheat and rye, but is also found on other cereals and other grasses. Scientific name: Zabrus tenebrioidesGreek name: Ζάμπρος Damage The insects, especially the larvae eat the leaves of cereals. Later, the adults (beetles) feed on the spikes

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European grapevine moth

European grapevine moth

European grapevine moth is the most serious entomological problem of vineyards because it destroys flowers and grape berries. It causes a qualitative deterioration in vine raceme due to the excretions and tissues of the larvae and the secondary establishment of other pathogens (botrytis, acid rot) to the affected vines. Scientific name: Lobesia botranaOther name: European

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Grape erineum mite

Grape erineum mite

The grape erineum mite is widespread in the vineyard regions of Greece. Particularly susceptible is the table wine grape variety Razaki, while less susceptible grape varieties are Sultanina and other wine-making varieties. Scientific name: Colomerus vitisOther name: Blister miteGreek name: Ερίνωση Damage Grape erineum mite has 3 races (race of erineum, bud and leaf curl)

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Colorado potato beetle

Colorado potato beetle

Colorado potato beetle insect mainly attacks potatoes, but also other plants of the Solanaceae family (e.g. tomato, pepper, eggplant). Scientific name: Leptinotarsa decemlineataGreek name: Δορυφόρος Damage Colorado potato beetle adults and larvae cause damage to leaves. In severe infestation the leaf disappears and only the nerves and stems remain on the plant. The insect is

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Slugs

Slugs

Slugs are found in many crops, e.g. cereals, maize, sugar beet, potatoes, legumes. Other name: Land slugGreek name: Γυμνοσάλιαγκες Damage Slugs while feeding, cause irregular cuts on all above and below ground parts of the plant. Young tender plant tissues are preferred. Eating on seeds and young seedlings results in uneven germination or plant losses.

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Mole cricket

Mole cricket

The mole cricket insect is found on many crops, particularly cereals, potatoes and vegetables. The insect feeds on plant roots, but also on soil organisms and humus. Scientific name: Gryllotalpa gryllotalpaOther names: Gryllotalpa, Onion-eater, Pumpkin-eater, PrasangueraGreek names: Γρυλλοτάλπα ή κρεμμυδοφάγος ή κολοκυθοκόφτης ή πρασάγγουρας Damage Plant are “missing” from the field. Pest The adults are

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European tarnished plant bug

European tarnished plant bug

European tarnished plant bugs are insects that are very often found in the garden and in homes in the summer. They are named after the characteristic foul smell they emit if threatened. Scientific name: Lygus pratensis, Calocoris norvegicus.Greek name: Λύγκος, Καλόκορη Damage The saliva of these insects contains toxic substances, which cause various symptoms in

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Stink bugs infestation

Stink bugs

Stink bugs attack tomatoes, peppers, vines, almond trees, pears, apple trees, apple trees, cherry trees, beans. They are called stink bugs because of the characteristic foul smell they emit when threatened. Scientific name: Lygus pabulinus, L. pratensis, L. rugulipennis, Calocoris sp.Greek name: Βρωμούσες Damage Stink bugs attack tomatoes, peppers, vines, almond trees, pear trees, pear

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Grey mold

Botrytis (Grey mold)

Botrytis (grey mold) is a widespread fungus. It attacks many crops and is a serious problem and a real threat to marketable production. In addition to the quantitative losses, it also reduces the quality of the products and damages the production after harvest during storage and transport. It is a problem particularly for greenhouse crops

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Bacterial necrosis

Bacterial necrosis

Bacterial necrosis is very common in Greece and in many areas of the world. It is considered an old disease and is known by the name “chilic marazi”. It is a chronic adrobacteriosis, meaning that the bacterium establishes itself in the vessels of the wood and from there spreads and attacks the young vegetation, causing

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Potato aphids

Potato aphids

Potato aphids attack potatoes and many other crops. It is observed that they complete their biological cycle in different hosts. They are usually found on the lower surface of the leaf, where they form colonies. Scientific name: Myzus persicae, Macrosiphum euphorbiae, Aphis nasturtii, A. frangulaeGreek name: Αφίδες πατάτας Damage Potato Aphids are usually found on

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Vegetable aphids

Vegetable aphids

Vegetable aphids consist of several species found in different crop groups. Thus, cucurbits are mainly attacked by Aphis gossypii, tomatoes by Myzus persicae, Macrosiphum euphorbiae, Aulacorthum solani, Aphis fabae, leafy vegetables by Brevicoryne brassicae. Scientific name: Aphis gossypii, Aphis fabae, Myzus persicae, Aulacorthum solani, Macrosiphum euphorbiae, Brevicoryne brassicaeGreek name: Vegetable aphids Damage Vegetable aphids are

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Aphids

Aphids

Myzus persicae aphids are widespread both in greenhouses and in the fields. Direct damage to plants is usually minimal but this aphid species is a carier for nearly 200 plant viruses. Scientific name: AphidsGreek name: Aphids Common organism Green peach aphid (Myzus persicae) and other species. Hosts range The host range of Myzus persicae is

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Cotton aphid

Cotton aphid

Cotton aphid attacks all cucurbits (cucumber, melon, pumpkin, watermelon) and the weed Xanthium spinosum. Scientific name: Aphis gossypiiGreek name: Αφίδα βαμβακιού Damage Aphids establish themselves in tender vegetation and form colonies. With favorable conditions they develop large populations. In the field, cotton plants covered with their honeycombs are easy to spot. Aphid’s honeycombs may eventually

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Pygmy mangold beetle

Pygmy mangold beetle

Pygmy mangold beetles mainly attack beets and sugar beets. Scientific name: Atomaria linearisGreek name: Ατομάρια Damage The feeding activity of the insect above and below the surface of the soil, causes small round holes, which then turn black within a few hours. These are also gateways for fungi to enter. Severely damaged seedlings die, so

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Anthracnose of cucurbits

Anthracnose of cucurbits

Anthracnose of cucurbits affects cucumber, and watermelon plants. The leaves are show extensive light brown or greyish spots with distinct margins. On the fruit, brown discoloration in the form of large spots is produced Scientific name: Colletotrichum orbiculare (syn. Colletotrichum lagenarium, syn. Gloeosporium lagenarium)Greek name: Ανθράκωση αγγουριού Symptoms Anthracnose of cucurbits causes extensive light brown

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Flea beetle

Flea beetle

We encounter the flea beetle insect mainly on beets. The larvae of the insect live below ground and attack plants in the underground part. The adult of the insect cause damage to the aboveground part of the plant. Scientific name: Chaetocnema sp., Haltica sp.Greek name: Άλτης ή ψυλλός Damage Because of the damage to the

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Alternaria leaf spot of beet

Alternaria leaf spot of beet

Alternaria leaf spot of beet is a foliar disease, which is found in all areas of beet cultivation. Damage occurs at the end of the season on old leaves or leaves already affected by another disease. Scientific name: Alternaria tenuis Symptoms In late summer the outer leaves of the beet become dark and dead, mainly

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