• Early blight

  Alternaria solani causes small green to dark brown spots to occur on leaves. Those spots then turn into dark brown angular lesions with a yellow halo restricted [...] conducive to infection. In greenhouses: avoid high RH. Prevent plant diseases by optimizing plant potential and crop resilience. [...] leaves, petals and stems. These spots can be distinguished by the dark and brown concentric rings that are caused by sporulation. Species may differ in specific

• Black root rot of cucurbits

  wilting may occur sooner. In wilted plants, the crown first gets a water-soaked appearance, turning light-brown and sunken, later black with amber-coloured [...] annually Disinfect nutrient solution and irrigation water Prevent plant diseases by optimizing plant potential and crop resilience. [...] General Phomopsis sclerotioides is a plant pathogen infecting cucurbits, causing black root rot of cucurbits. Damage symptoms Phomopsis sclerotioides causes

• Pierce's disease of grapevine

  tyloses block the vessels, causing the plants to wilt. Transport to different plant parts depends on the plant species: in peach, bacteria are found in [...] show irregular maturation and patches of brown and green tissue. In the following seasons, these infected plants show a slower development and produce chlorotic [...] remain on the plant longer, but fewer and smaller fruits are produced. In plums, the first symptoms are irregular chlorosis or browning of leaves along

• Bacterial canker of tomato

  infect the new plants by entering through wounds and then growing into the vessels of the plant. Plant growth is inhibited and the plant wilts because the [...] occur, which later turn brown and may merge. The leaves wilt and curl upwards, often starting at one side of the plant. They turn brown but don’t fall off. [...] deep-ploughing to stimulate the decay of crop residues Prevent plant diseases by optimizing plant potential and crop resilience.

• Downy mildew of Cucurbits

  first yellow and then turn brown. On the underside of the leave fluffy growth appears which is first white and later turns grey-brown. This is actually the [...] required. Inside the plant, the pathogens produce haustoria, small organs with which the pathogen can take up nutrients from the living plant cells. The pathogens [...] remove crop residues and prevent splashing water. Prevent plant diseases by optimizing plant potential and crop resilience.

• Charcoal rot

  mostly found after plants are well established and after plants begin bearing fruit or are subjected to stress. Severely infected plants collapse and die [...] inoculum in the soil Minimize plant stress with optimal irrigation and fertilization regimes Prevent plant diseases by optimizing plant potential and crop resilience [...] ion of vascular and cortex tissue (outer tissue layer) to orange-brown to dark brown. Cutting the roots may show the same discolouration of the internal

• Gummy stem blight

  bryoniae) is a fungal plant pathogen that causes gummy stem blight. Damage symptoms Mycosphaerella cucumis in cucumber causes brown lesions on the foot and [...] Remove all pots and plant parts from previous crop that may serve as inoculum source for the new crop prevent condensation on all plant parts at all times [...] high-wire crops) Pick and remove dead and diseased leaves Prevent plant diseases by optimizing plant potential and crop resilience.

• Verticillium wilt

  non-specific plant pathogens. Many species are saprophytes, V erticillium albo-atrum and Verticillium dahlia e are the most important plant pathogens. [...] cause wilting of plants. The wilting starts at the lower leaves. These leaves are pale-green, then orange-yellow. In the beginning the plant seems to recover [...] may occur only in parts of the plant. Cutting the stalk horizontally reveals a slight discolouration of the vessels, brown or greenish, but much less distinct

• Grape downy mildew

  a lysate, these compounds support plant protection by acting both on the plant surface and by activating the plant’s natural defense mechanisms. This dual [...] downy growth on the underside of leaves under humid conditions Spots turning brown and necrotic as the disease progresses Premature leaf drop in severe infections [...] infections, reducing photosynthesis and vine vigor Shoot and tendril symptoms Brown to dark lesions on young shoots and tendrils Distorted or stunted shoot growth

• Southern blight

  main root. As a consequence, leaves higher up in the plant start yellowing. Severely affected plants present girdling of the stem, which causes wilting of [...] the upper part, necrosis, loss of leaves, and death of the plant. Symptoms begin with brown, aqueous lesions on the stem. As the damage progresses, it [...] The fungus may reduce the stand of the plants. Damping-off may occur during germination or establishment of the plant (seedling phase), due to the occurrence