Powdery mildew

apple, pear, outdoor grown rose and other Rosaceae , the fungus causing powdery mildew is extremely sensitive to water and ‘hides’ on the underside of the [...] mildew fungi and especially in greenhouse crops they don’t play a role in the epidemics. Fungal spores germinate on the leaf surface and the germ tubes [...] tubes grow and branch out on the leaf surface. Small structures are produced, the haustoria, from which the fungus penetrates the plant cell and takes up nutrients

Potato aphid

Various vegetable and ornamental crops grown in greenhouses are colonized, including tomato, aubergine and roses. Damage symptoms Nymphs and adults extract [...] making the crop and its fruit sticky. Black fungal moulds ( Cladosporium spp.) grow on this honeydew, contaminating fruit and ornamental crops and rendering [...] production. Life cycle and appearance of Potato aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in

Cottony cushion scale

spp ., Casuarina spp . and Pittosporum spp ., but it can damage many types of fruit and forest trees, and ornamental shrubs and trees. Damage is mostly [...] red-brown body colour and covering of granular, white wax. The legs, antennae and body hairs are conspicuously black. The nymphs and adult females produce [...] crawlers settle along the midribs and veins of the leaves. The next two instars migrate to the larger twigs and branches and eventually moult into the adult

Tomato leafminer

dark segments and recurved labial palps, that are well developed. Black spots are present on the anterior wings. Adults are nocturnal and usually hide between [...] including potato, eggplant, capsicum pepper and tobacco as well as weeds such as Datura stramonium, Lycium chilense , and Solanum nigrum. Damage symptoms The most [...] the leaves. Caterpillars prefer leaves and stems, but they may also occur underneath the crown of the fruit and even inside the fruit itself. On leaves

Pea

this plant develop from the ovary of a pea flower and carry numerous peas. The vegetable is a bright green colour, sometimes yellow or purple and widely grown [...] as a cool season vegetable crop. Immature peas are consumed as a vegetable and often canned or frozen. Dry peas are shelled from matured pods.

Rose

rose plant can vary in shape and size, but are often ornate and bright coloured. Colours range from white to yellow, pink and orange to red, the most popular [...] than one hundred rose species and thousands of different cultivars. The rose is a woody, perennial plant which usually develops as a shrub, climbing or trailing

Leaf miners

directly and indirectly. The most direct damage is caused by the larvae mining the leaf tissue which can lead to desiccation, premature leaf-fall and cosmetic [...] The size of a leaf tunnel depends on the stage of development of the leaf, the species of host plant and the species of leaf miner. The older larvae make [...] ip between population size, leaf damage and yield reduction varies according to the season, culture method and the susceptibility of the host plant. This

Orius laevigatus

various agricultural and horticultural systems. Both adults and nymphs of Orius laevigatus are voracious predators, adept at piercing and feeding on the soft [...] wool slabs, leaves and/or in application boxes (Dibox) Apply in groups of at least 50 insects in order to establish a population and encourage mating Make [...] after application The dosage of Thripor-L depends on climate, crop and thrips density and should always be adjusted to the particular situation. Start in

Radish

used to produce oil. Other varieties are developed for sprouting and their roots and leaves are consumed either cooked or cold. [...] produced by the plant, namely glucosinolate, myrosinase, and isothiocyanate. Radish is now produced and consumed in all parts of the world. The seeds are used [...] Radish comes in several varieties that all vary in flavour, colour, size and time it takes to mature. The vegetable has a particular sharp or sometimes

Chrysanthemum

from Asia and northeastern Europe and the majority of the different species derive from East Asia. Especially in China a wide range of varieties and cultivars [...] cultivars has been developed for commercial propagation and production. The current, commercially cultivated chrysanthemums are more striking than the wild [...] daisies or pompoms or buttons. This particular genus consists of many hybrids and an extensive range of cultivars that are produced for commercial, horticultural