Cucumber

About The cucumber ( Cucumis sativus ) is a popular, extensively cultivated plant that belongs to the gourd family of Cucurbitaceae . The cucumber originates [...] in India. The plant’s cultivation history goes back some 3000 years and it is now being produced on most continents. The cucumber plant is a creeping vine [...] grows up trellises or other supporting frames. The plant supports itself with thin, spiraling tendrils. The cucumber plant has large leaves and it produces

Two-spotted spider mite

to the host plant by feeding on plant sap. They mainly occur on the underside of leaves where they pierce the cells and suck out the contents. The empty [...] on the leaves affects the appearance of the crop. This is of particular concern in ornamental crops. Life cycle and appearance of Spider mite Two-spotted [...] yellow, and in many plants the damage can also be seen on the upper surface of leaves as small yellow dots. The destruction of cells results in reduced

Whitefly

cycle of whitefly Whitefly damage The larvae need a lot of nutrients for growth, and thus consume a large quantity of plant sap. This contains a high [...] 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 [...] belong to the order Hemiptera (true bugs ). Together with aphids and scale insects, they belong to the division Sternorrhyncha. The whiteflies form the family

Fusarium spp.

inside the vascular system of the host plant and spreads upwards inside the plants. The other species are dispersed upwards on the outside of the plant [...] towards the foot of the plant and enters the vascular system. Inside the vessels, the fungus produces mycelium and many spores (microconidia), which are [...] upwards. At the same time, the plant produces gum as a defence mechanism to stop the fungus from spreading. This gum blocks the xylem and causes the wilting

Damping-off

or substrate the plant turns brown. A typical symptom of a Pythium infection is the easy stripping of the skin from the root cortex with a finger nail. [...] later the plants wilt irreversibly. In potted plants the flower buds fall off. The side roots rot and very little of the root system survives. On the border [...] at the start by using higher substrate blocks for the seedlings. In field crops: Avoid the use of fields with inadequate drainage or improve the drainage

Cottony soft rot

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 ( S [...] mycelium occurs with new dark sclerotia. The fungus also infects seeds and tubers, thereby creating a source of infection for the next crop. The dispersal to [...] produced by the germinating sclerotia. The fungus grows quite rapidly inside the plant and kills the host cells. On the infected plant tissue white, fluffy

Biological seed treatment

stress, the development of the root system, and the productivity of the crop. An overview of positive attributes of microbials depending on the organism: [...] applied to the seed in a powder form or as a liquid. An even layer covers the whole seed. In this way, the beneficial ingredients are available to the seed when [...] which results in a lower exposure of growers to chemicals and lessens their impact on the environment. The potential exposure of the soil to agrochemicals

Spidex

ml bottle with dosage-plug; 500 ml bottle. Carrier Wood-chips. Application Turn and shake the bottle gently before use Push the centre of the cap to open [...] open the dosage hole Sprinkle material on leaves or pour into Diboxes Make sure the material remains on the introduction site for at least a few hours after [...] twice at weekly intervals. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for your situation.

Phytophthora blight

water-soaked lesions with vague borders and white fluffy fungal growth on the leaves. The centre is grey-brown with a light-green edge. On the stem, elongated [...] zoospores. The pathogen grows into the stem and on the plant surface and new sporangiophores (structures containing sporangia, a type of spores) with sporangia [...] usually circling the stem. On potato tubers, blueish lesions appear, that can be seen through the skin. The Great Famine was a period of mass starvation

Charcoal rot

Cutting the roots may show the same discolouration of the internal tissues of the main roots. In most crops, necrotic lesions on the roots are the first [...] by wilting, dropping of leaves and collapse of the entire plant. Life cycle and appearance of Charcoal rot The fungus survives in the soil and on crop residues [...] 24 hours the fungus infects the roots of the host by direct penetration via germ tubes. During the next two days, necrotic spots occur on the roots and