• Top diseases in roses - Powdery Mildew

  February 17, 2023

  nutrients from the epidermal layer of plant cells. Most of the fungus remains on the outside of the plant surface. On the mycelium on the plant surface, new co [...] colonies, first and foremost on the upper side of the leaf. In severe epidemics in cereals, the ears may also be infected. In most crops, the white colonies [...] mildew are enhanced. Talk to a Koppert consultant in your area to guide you on the integration of biorational products in your management strategy for

• A dive into organic hop farming and biological crop protection

  resilience and innovation in the face of change, acknowledging the importance of learning from both setbacks and triumphs in this evolving process. Beneficial [...] boost in confidence in the ecosystem of his hop farm. These natural enemies contribute to more balanced and targeted pest management, with a specific focus [...] insects mark a significant advancement in the toolkit for organic farming. He envisions this approach as a crucial building block for the future of organic

• Fusarium spp.

  ascospores. In general, the life cycle of different Fusarium species is similar. Fusarium overwinters for many years in the soil, and on crop residues of infected [...] Fusarium spp. is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species are [...] sambucinum (a.k.a. F. sulphureum ) causes dry rot of potato. The rot is dark and wet at first. The lesions are irregular and sharp-edged. In cavities, pink

• Botrytis

  part of the foot rot complex, which causes rotting of the foot and may cause death of the plants. In cucumber and tomato the fungus causes lesions on pruning [...] plants or plant parts in a closed plastic bag In tomato: prune with a knife and not by hand, to avoid rugged, irregular wound surfaces In cucumber: remove dead [...] lesions. The symptoms on fruits, flowers and on various parts of potted plants often only become visible during and after cold storage. In lettuce, grey mould

• Pea blight, leaf and pod spot

  General Ascochyta pisi is a fungal plant pathogen that causes A scochyta blight on pea (leaf blight or pea blight) and lesions of stems, leaves, and pods [...] symptoms Ascochyta pisi causes spots on leaves, stems and pods of peas. The spots on leaves and pods are round, on the stems they are more elongated. The [...] Life cycle and appearance of Pea blight, leaf and pod spot Ascochyta pisi hardly survives in the soil or on crop residues because of its poor saprophytic

• 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 [...] occur on stems but also on leaves, fruits and pods. Root infection often leads to premature wilting and death of plants. Life cycle and appearance of Cottony [...] sclerotiorum ) overwinters as sclerotia and mycelium in dead and living plant material in or on the ground. Sclerotia germinate at temperatures between

• Early blight

  stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary infection of the [...] and at a relative humidity (RH) of over 90% or when the leaves are wet. Small differences in optimum temperature occur between species, but in general [...] rotation, in particular when spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving

• 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 [...] cycle, is similar to that of most Fusarium species. Fusarium overwinters for many years in the soil and on crop residues of infected plants as chlamydospores [...] different formae speciales which are each selectively pathogenic on a limited number of crops. Even within one crop, different formae speciales may occur

• Angular leaf spot

  most important, but also all types of vascular tissue of the crown can be infected, creating a look similar to that of a Phytophthora fragariae infection [...] also introduced in a crop in new transplants. This bacterium is very resistant to desiccation and can survive well in dry leaves or leaves in the soil, but [...] is a leaf spot disease found in strawberry. Damage symptoms Xanthomonas fragariae initially causes small, water-soaked lesions on the underside of the

• Downy mildew of rose

  causes the plant to fall over. In cabbage the stem is also infected in severe epidemics. In blackberry, red stripes may occur on the stems and petioles due [...] General Peronospora sparsa is a plant pathogen that causes plant diseases, such as downy mildew of rose and diseases on blackberries, raspberries and other [...] They cause lesions on the upper leaf surface, bordered by the veins, which are first yellow and then turn brown. On the underside of the leaf fluffy growth