• Red palm weevil

  Due to the specific morphology of the palms, direct or indirect destruction of the apical bud will lead to the death of the plant, which makes the red palm [...] ) are typical weevils: the head extends with a long thin rostrum that holds the antennae and tiny mandibles. The size and colour of adult weevils greatly [...] General The red palm weevil ( Rhynchophorus ferrugineus ), also known as palm weevil, Asian palm weevil or Sago Palm Weevil originates from tropical Asia

• Beneficial nematodes

  productivity. The most common types of plant-parasitic nematode are root-knot nematodes, cyst nematodes, lesion nematodes, spiral nematodes and dagger nematodes [...] nematodes. What are nematodes? Nematodes, commonly referred to as roundworms, are a diverse group of worms belonging to the phylum Nematoda. Nematodes are cha [...] a : These nematodes are particularly effective against soil-dwelling insects like Japanese beetle, white grubs, and root weevils . They are used in turfgrass

• Black sigatoka disease

  conidia. The ascospores are wind-dispersed over longer distances, the conidia are splash-dispersed within the crop. Both types of spores cause the exact same [...] or streaks on leaves of about one month old. The symptoms run parallel to the veins. Within a few days, the spots become a few centimetres in size and turn [...] centres. These spots enlarge further and the tissue around the lesions turns yellow and dies. Lesions merge and the whole leaf turns brown and ultimately

• Black rot of carrots

  spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving conidia in the soil. Use resistant [...] infection of the leaves. Survival can be several years, in the case of black rot of carrots ( Alternaria radicina ) up to 8 years. Damage symptoms Black rot of [...] seed-transferred carrot disease. The seeds are the main source of primary infection and this may lead to death of seedlings. From the primary infection of leaves

• Black leg of seedlings

  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 [...] enable the spores to move through water. The zoospores are chemically drawn to the growing roots of young plants and move towards them through the soil water [...] older plants, the leaves lose their turgor or the leaf tips turn yellow, for example in flower bulbs. At first, the plants recover during the night, but later

• Black root rot of cucurbits

  lesions are slightly sunken and are mostly formed around the point of attachment of lateral roots and root hairs. The lesions may grow and encircle the root [...] at 10 °C the lesions are light-brown. The lesions can be enclosed by pseudostromata: dark coloured tissue that looks like black stripes. The disease is [...] a few of the roots but in severe cases all roots may be infected. At the final stage of the disease, only vascular tissue remains because the cortex (outer

• Amazone Plants continues the path of organic cultivation

  complex. The plants in the propagation phase enter the processing hall every nine weeks. During the nine week period that the plants are in the greenhouse [...] become noticeable once the plants are in the hall. Fantastic results with Swirski-LD The main pests are the Western flower thrips , aphids (predominantly [...] reassuring.’ The company still needs to take action against Echinotrips and anthurium thrips as the current thrips predators are not sufficiently effective against

• Crop Protection

  crops without compromising the environment. What are biocontrol agents? Biocontrol agents refer to products and methods that are based on living organisms or [...] health or the environment. Minimal resistance against pests and diseases Biological control agents, such as beneficial insects, mites and nematodes, provide [...] Crop protection in agriculture Crop protection is the practice of protecting plants against pests, diseases, and harmful influences to ensure healthy growth

• Thrips

  fringe of hairs along both edges of the thin wings. There are more than 6,000 known species. Most are harmless, some are predators, and fewer than 20 species [...] causing the surrounding tissue to die. The resulting silver-grey patches on leaves and the black dots of their excreta indicate their presence in the crop [...] thrips control Learn more about What are thrips? Several species of thrips are a major problem in greenhouse horticulture. The Western flower thrips ( Fra

• Caterpillars

  damage to crops. The most harmful caterpillars that occur in greenhouses belong to the Noctuidae (the noctuid or owl moths), which is the largest of all [...] all lepidopteran families. Most adults of this family are nocturnal. The caterpillars mostly pupate in the ground. Another family containing several species [...] that damage greenhouse crops is the leafroller family, the Tortricidae. The name ‘leafroller’ refers to the fact that the caterpillars often live in rolled-up