Mealybugs and scales

ornamental crops, the mere presence of mealybugs is sufficient to render the product unfit for sale. A very small population can thus cause considerable [...] recognizable as insects. The females are wingless and immobile, and covered with a hard scale (armoured scales and soft scales) or with waxy threads (mealybugs) [...] species extract their nourishment from roots, whilst others are gall-formers. A few species can also transmit harmful viruses. Mealybugs inflict damage on

Chafers

both species live in the soil and feed on the roots of many plants. They are a serious pest that can cause substantial damage. The adults are not harmful [...] young plants and especially in grassland and turf. There, secondary damage is often caused by birds and small mammals digging for the grubs to eat them [...] sostitialis are 14-18 mm long and yellowish chestnut brown. Amphimallon majalis is somewhat smaller; about 13-15 mm long and reddish-brown in colour. The adult

Pumpkin, squash and gourd

About Cucurbita or gourd is a genus of herbaceous vines belonging to the gourd family, Cucurbitaceae . Cucurbits, as they are also know, are indigenous [...] five species are cultivated for their edible fruit and seeds. This fruit is alternately known as pumpkin, squash or gourd. That depends on species, variety

Common asparagus beetle

instars, a pupal instar and the adult beetle. Adult common asparagus beetles ( Crioceris asparagi ) have a shiny blue head, black antennae and a red thorax [...] General The common asparagus beetle ( Crioceris asparagi ) is a major, host-specific pest of asparagus in most asparagus producing regions of the world [...] and larvae feed on the leaves of asparagus. As the larvae feed, they secrete a blackish fluid, consisting of faecal material, which may contaminate the plant

Horiver Rollertrap

to provide additional support. It is recommended to replace the Rollertrap after 10 months, or earlier if the surface is largely covered by insects and/or [...] crop is still low, just before or after planting. Storage time See Best before date. Storage temperature 0-32°C/32-104°F. Storage conditions In a cool [...] black and transparent Standard sizes: 5, 15 and 30 cm x 100 m 15 cm width is also available in lengths of 125, 150 and 500 m; other lengths on request

Biopar

such as (climatic) conditions and the level of infestation. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best [...] where the flies pupate and cover with 5-10 cm of straw Make sure the material is distributed on dry places or on dry(er) manure Place close to stable walls [...] introduction as soon as flies can be expected Dosage The information given below is merely indicative. Tailored advice requires detailed info on local factors

Caterpillars

can rapidly decimate a plant. Very small caterpillars are not able to chew and therefore graze the underside of leaves. This causes a window effect where [...] of butterflies and moths. Butterflies and moths form the order Lepidoptera, a very large group with more than 150,000 species, that are easily distinguishable [...] occur in greenhouses belong to the Noctuidae (the noctuid or owl moths), which is the largest of all lepidopteran families. Most adults of this family are nocturnal

Caterpillar control with nematodes

tly effective against a variety of caterpillars . It also shows that while nematodes move most efficiently in a liquid layer, a dry leaf surface does not [...] humidity is high (> 75%) continuously for several hours after application Temperature is ideally within optimal range of 13 – 30 °C. Solar radiation is low [...] caterpillar which dies within a few days. When applied correctly, beneficial nematodes significantly reduce pest pressure, resulting in a healthier crop and higher

Carrot

About The carrot ( Daucus carota subsp. sativus ) is a root vegetable and comes in a variety of colours, ranging from the regular orange to black and purple

Beneficial nematodes

are a group of parasitic nematodes that have a unique relationship with insects. These nematodes are natural predators of various insects and play a crucial [...] fruit crops. How to apply nematodes The application of beneficial nematodes is a straightforward process that ensures they come into contact with the target [...] product labels Store nematodes in a refrigerated environment to maintain their effectiveness until the day of application Create a nematode suspension by mixing