Southern European marshland pyralid

fovealis) is a polyphagous species feeding on a wide range of hosts from 38 plant families. They include ornamental crop plants, such as roses and gerbera [...] cinerea. In gerbera, the flower buds may also be eaten. It has even been known for the caterpillars to inflict damage to the roots of crops cultivated in an [...] considerably according to the crop: in begonia and kalanchoë a relatively small population can cause severe damage, whereas roses appear to tolerate larger numbers

Integrated Pest Management

What is IPM? Integrated Pest Management, often referred to as IPM, is a sustainable and environmentally responsible approach to pest management. It employs [...] cycle is an ongoing process that incorporates the principles mentioned above. It's a dynamic approach that adapts to changing conditions and new information [...] employs a combination of strategies to prevent and control pests while minimizing the use of pesticides. Integrated Pest Management is a dynamic and multifaceted

Greenhouse whitefly

the population is very large, feeding on plant sap can affect the physiology of the plant, as a result of which growth is retarded. In full sunlight, leaves [...] can in turn influence the development of fruit and lead to a reduction in yield. The honeydew deposited on fruit makes it sticky. Dirt adheres to the fruit [...] damage that whiteflies cause to a crop is the result of sucking out the sap from the plant leaves and secreting honeydew. This can have the following c

Beet armyworm

summer. It is highly polyphagous, feeding on plants of more than 20 families. It is a serious pest in greenhouses, where it feeds on ornamental plants such [...] gerbera, roses and potted plants. In both the greenhouse and the field, it is a major pest of sweet pepper. Damage symptoms Older caterpillars migrate to the [...] a exigua) has become a regular problem for horticulturalists due to its resistance to nearly all insecticides, and its ability to develop on wild vegetation

Onion thrips

(Thrips tabaci) is distributed throughout the world. It is found outdoors on many plants and particularly damaging on onions, leek, and in greenhouses on [...] petals and in the soft parts of stalks. They are inserted into the plant tissue with a saw-like ovipositor. Larvae are light to yellowish green in colour, [...] Thrips cause damage to plants by piercing the cells of the surface tissues and sucking out their contents, causing the surrounding tissue to die. The resulting

Western flower thrips

variety of plants, including many vegetable and ornamental crops in greenhouses, and on various weeds. It is an especially significant pest in cucumber, [...] occidentalis) are laid in leaves, flower petals and in the soft parts of stalks. They are inserted into the plant tissue with a saw-like ovipositor. Larvae [...] necrotic spot virus (INSV). Both viruses affect a wide range of plants, and often a single host plant may be infected by both viruses.

Damping-off

General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress [...] aphanidermatum mostly occurs in young plants and damage is more extensive in young crops. Damage symptoms Pythium affects roots, in particular those of seedlings [...] yellow, for example in flower bulbs. At first, the plants recover during the night, but later the plants wilt irreversibly. In potted plants the flower buds

Botrytis

ventilation in greenhouse crops Remove diseased plants or plant parts in a closed plastic bag In tomato: prune with a knife and not by hand, to avoid rugged [...] Botryotinia fuckeliana / Botrytis cinerea ) is a commonly found fungus in many environments. It survives in plant parts like bulbs and crop residues or as [...] dry plants. The germ tube grows into the plant. Grey mould ( Botryotinia fuckeliana / Botrytis cinerea ) is a necrotrophic fungus, meaning that it excretes

Cottony soft rot

as cottony soft root, is a plant pathogenic fungus. It has a very wide range of host plants. Damage symptoms The first symptoms of a cottony soft root ( [...] dispersal to neighbouring plants is by mycelial growth. How to prevent Cottony soft rot Practice dry cultivation/be careful with irrigation Use wide plant spacing [...] spacing Remove diseased plants in a closed plastic bag Remove crop residues Prevent plant diseases by optimizing plant potential and crop resilience.

Angular leaf spot

overwinters in plants and dead leaves, that become the primary source of infection in the spring. The bacteria are also introduced in a crop in new transplants [...] . This bacterium is very resistant to desiccation and can survive well in dry leaves or leaves in the soil, but not independantly in the soil. Under humid [...] nights, in combination with high humidity or presence of water. These conditions occur mostly in the spring if it rains or when sprinkler irrigation is used