Fusarium wilt

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 [...] Survival is also possible on seed, greenhouse structures, tools and machinery. Primary infection is either seed-borne or takes place as infection of the roots [...] Prevent stress for the plants Ensure there is adequate soil drainage Apply nitrogen in the form of nitrate instead of ammonium Prevent damage during harvest

Damping-off

little of the root system survives. On the border between air and soil or substrate the plant turns brown. A typical symptom of a Pythium infection is the [...] conditions, especially dehydration. Germination of the oospores is stimulated by exudates from roots of a susceptible host nearby. The oospores germinate and form [...] in young plants and damage is more extensive in young crops. Damage symptoms Pythium affects roots, in particular those of seedlings. Infected plants lag

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 ( [...] Root infection often leads to premature wilting and death of plants. Life cycle and appearance of Cottony soft rot Cottony soft root ( Sclerotinia sclerotiorum [...] seeds and tubers, thereby creating a source of infection for the next crop. The dispersal to neighbouring plants is by mycelial growth. How to prevent Cottony

Greenhouse whitefly

The larvae of 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 [...] es: If 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 [...] transmitted. The consumption of plant sap and secreting of honeydew by whiteflies reduce the aesthetic value of crops. This is particularly important in

Tobacco whitefly

The larvae of 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 [...] es: If 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 [...] n. Bemisia tabaci is known for the transmission of viruses, including TYLCV in tomato. The consumption of plant sap and secreting of honeydew by whiteflies

Macadamia nut borer

fruit to another. This type of damage is small, and trees are able to compensate for damage because of the large volume of flowers and small nuts produced [...] the head capsule is brown. The pupa is dark brown and (if pupation takes place in the soil) encased in a cocoon of soil particles. There is no cocoon if pupation [...] batrachopa ) is native to Africa and was originally described from the Eastern Cape province in South Africa. Macadamia is the major host of this moth, it

Long-tailed mealybug

but these days it is widespread throughout the world. The range of host plants of Pseudococcus longispinus is less extensive than that of the citrus mealy [...] the body itself. The length of the other filaments is roughly half the width of the body. The female is 3 - 4 mm long. Reproduction in Pseudococcus longispinus [...] causing deformation and / or yellowing of leaves, sometimes followed by defoliation. The overall effect is a reduction of photosynthesis and therefore the yield

Green peach aphid

peach tree, is native, however it is now a pest with a world-wide distribution. The green peach aphid ( Myzus persicae subsp. persicae ) is a particularly [...] families. Damage symptoms Of all the aphids , the peach potato aphid ( Myzus persicae subsp. persicae ) is the most important vector of viral diseases. It can [...] different viruses and is thus rightfully feared by many growers. Nymphs and adults extract nutrients from the plant and disturb the balance of growth hormones

Anagyrus vladimiri

temperature is 38°C/100°F. Citripar should be combined with Cryptobug or Cryptobug-L for effective control of the mealybugs . Behaviour of the parasitic [...] lateral margins of the host. Oviposition generally lasts about 15-40 seconds. The larva of the parasitic wasp completely consumes the contents of the mealybug [...] Anagyrus vladimiri Anagyrus vladimiri is a parasitic wasp belonging to the Encyrtidae family. This parasitic wasp is particularly effective for mealybug

Diamond back moth

but is now present wherever its cruciferous hosts exist and it is considered to be the most universally distributed lepidopteran species. It is highly [...] young seed pods, causing loss of pods and seeds. Life cycle and appearance of Diamond back moth The oval and flattened eggs of the diamond back moth (Plutella [...] and is green, sometimes suffused with pale yellow, with a few short hairs and small white patches. The larva has five pairs of prolegs; one pair of prolegs