• Root rot of carrot

  in nonsterile soil remained viable at 0°C and 3°C for 12 months, at 6°C for 6 months, and at 12°C for 2 months, indicating a capacity to overwinter in cold [...] lesions. Continuous light is best for in vitro sporulation. Spore germination in vitro requires free water. The pH for growth, sporulation, and spore g [...] black, while the cotyledons remain green. During humid spells the surviving plants exhibit by necrotic leaf spots Life cycle and appearance of Root rot of

• Angular leaf spot

  are dispersed by rain, irrigation water or handling of the plants. Infection of the plants happens both passively and actively. Infection and disease [...] sprinkler irrigation is used. Healthy, well growing plants are more susceptible than diseased or stressed plants. How to prevent Angular leaf spot Use clean [...] cultivars of pepper are available and should be used Prevent plant diseases by optimizing plant potential and crop resilience.

• Chrysanthemum

  mum or chrysanth, is a flowering plant that belongs to the genus Chrysanthemum of the family of Asteraceae. The plant is originally from Asia and northeastern [...] cultivars that are produced for commercial, horticultural purposes. Traditionally, yellow is the main colour of this flowering plant. Nowadays, a wide range [...] Especially in China a wide range of varieties and cultivars has been developed for commercial propagation and production. The current, commercially cultivated

• Early blight

  conducive to infection. In greenhouses: avoid high RH. Prevent plant diseases by optimizing plant potential and crop resilience. [...] infection of the leaves. Survival can be several years, up to eight years for several Alternaria spp. Typically, Alternaria causes early blight of potato [...] Alternaria solani can spread to the flowers (especially dangerous in crops for seed production) and to the crown. Sporulation of Alternaria occurs at te

• Herbs

  all plants which are used as food ingredient, natural medicine or fragrances. They often have savory or aromatic characteristics and are used for flavouring [...] leafy green or flowering parts of a plant, which can be used fresh or dried. Spices derive from other parts of herbal plants and are often dried seeds, berries [...] and fruits. Botanically speaking, ‘herb’ is synonymously to ‘herbaceous plant.’

• Spider mites and other mites

  mite damage Larvae, nymphs and adults cause damage to the host plant by feeding on plant sap. They mainly occur on the underside of leaves where they pierce [...] reduced plant growth. As damage increases whole leaves turn yellow, and as more cell sap is removed, the leaf, and eventually the whole plant may die. [...] other mite species can rapidly infest greenhouse and field crops, feeding on plant cells and causing leaf discoloration, reduced photosynthesis and lower yields

• Aphids

  host plants in the winter, and those species that do not. Species that alternate between host plants reproduce asexually on their summer host plant, migrating [...] greenhouse and field crops, causing plant stress, virus transmission and yield loss. Effective aphid control is essential for maintaining healthy, productive [...] solutions for aphids, professional growers can achieve consistent pest management, maintain crop quality, yield and sustainability. Solutions for aphid control

• Crazy roots, hairy roots, crown gall

  system Prevent contact between the plant roots and the gutters in greenhouses Prevent plant diseases by optimizing plant potential and crop resilience. [...] the hormonal system of the plant resulting from the Rhizobium infection. Rhizobium rhizogenes puts a Ri-plasmid in the plant tissue and causes a genetic [...] brown. Only Rhizobium radiobacter causes galls and tumours on underground plant parts and on the crown. Furthermore, infection is characterized by excessive

• Aphidius colemani

  recognized distributor of Koppert products for advice on the best strategy for your situation. Best conditions for use of Aphidius colemani The parasitic wasp [...] is a parasitic wasp used for biological pest control . This species belongs to the Braconidae family and is primarily known for its effectiveness in controlling [...] widely used in the biological control of aphids . Aphidius colemani is used for the control of the following pests: Cotton aphid ( Aphis gossypii ) Green

• Horiver Wetstick

  ground for young plants and 50 cm above the ground for mature plants Replace the traps when largely covered by insects and/or debris Dosage For monitoring [...] and adjust height when plants are growing Do not place traps in-between the plants as parasitic wasps will then also be trapped For Tuta absoluta place black [...] monitoring use one Horiver Wetstick per 200 m 2 For trapping in hotspots use one Horiver Wetstick per 2 to 20 m 2 For trapping Tuta absoluta use at least one Horiver