Tobacco whitefly

whitefly need a lot of protein for growth, and thus consume a large quantity of plant sap. This contains a high proportion of sugar, and the excess is excreted [...] tabaci ) is feared because of its high level of resistance to many insecticides and its propensity for the transmission of viruses. Life cycle and appearance [...] egg, first, second, third and fourth larval stage (often referred to as ‘pupa’ although strictly spoken this is not true) and adult. The larvae are found

Pepper weevil

hing feature is a ‘snout’ which is longer than their head and prothorax. Two days after hatching and feeding, they begin to copulate and subsequently lay [...] flower buds and young fruit, causing the stalk and calyx to turn yellow before wilting and dropping off. When you see fruit on the ground, it is clear that [...] creating a type of cell, to be used later when it begins its metamorphosis. It develops a shiny white colour and eyes which are yellow at first, and become

Anagyrus vladimiri

dimorphism: the female is about 1.5-2 mm in length and brown, with distinctive black and white banded antennae. The male is 0.8 mm in length and black in colour [...] Anagyrus vladimiri is a parasitic wasp belonging to the Encyrtidae family. This parasitic wasp is particularly effective for mealybug control, a common pest affecting [...] the mummy. Anagyrus vladimiri has a strong photokinetic response, i.e. the female is strongly attracted to light and is inactive in darkness.

Sportnem-T

solution as soon as it is prepared and within a short timeframe. Do not store mixed suspensions Dosage Sportnem-T is typically applied at a rate of 2.5 billion [...] Timing Timing and frequency depend on the pest species and the crop environment (relative humidity and temperature). Consult a Koppert advisor or a recognised [...] Nematodes can be applied using a watering can, an airblast sprayer, through a sprinkler system, with a backpack sprayer, or a vehicle-mounted spray unit To

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 ( [...] wilting and death of plants. Life cycle and appearance of Cottony soft rot Cottony soft root ( Sclerotinia sclerotiorum ) overwinters as sclerotia and mycelium [...] in dead and living plant material in or on the ground. Sclerotia germinate at temperatures between 4 and 26 °C with an optimum between 13 and 15 °C. G

Cabbage moth

are light brown with a rather inconspicuous spot in the middle. Head and thorax are grey-brown with white spots, and the abdomen is a pale, greyish brown [...] initially light and translucent, becoming steadily darker until they are a brown-black or sometimes even a purple colour. They are ridged and have a light network [...] rhubarb as well as chrysanthemum and carnation. It is a species found in Europe, North Africa (Libya, Canary Islands), Japan and sub-tropical Asia, including

Fusarium head blight or scab

General Fusarium is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species [...] mycelium cells) or mycelium. Survival is also possible on seed, greenhouse structures, tools and machinery. Primary infection is either seed-borne or takes place [...] chlamydospores and ascospores in crop residues. Primary infection is from this inoculum or from infected seed. Infected seed doesn’t germinate well and seedlings

Cotton aphid

production. Life cycle and appearance of Cotton aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in [...] virus. Nymphs and adults extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving [...] cucumber, melon, pepper and many ornamental plants such as chrysanthemum and kalanchoe. The cotton aphid ( Aphis gossypii ) is distributed throughout the

Diamond back moth

xylostella) is suggested to have its origin in Europe, South Africa or East Asia, but is now present wherever its cruciferous hosts exist and it is considered [...] species. It is highly migratory and wind-borne adults can travel long distances to invade crops in other regions. Damage symptoms The caterpillar is a surface [...] flower buds, flowers and young seed pods, causing loss of pods and seeds. Life cycle and appearance of Diamond back moth The oval and flattened eggs of the

Vine mealybug

tail filaments and transparent wings and has no mouthparts. The female is larger (3 mm) and voluminous, has an elongated oval shape and has no wings. The [...] growth and causing deformation and / or yellowing of leaves, sometimes followed by defoliation. The overall effect is a reduction of photosynthesis and therefore [...] Pseudococcidae, and is also known by the names Mediterranean vine mealybug and Grapevine mealybug. As the name indicates, this mealybug is mostly found on