• Blight of pepper

  and fruit rot of peppers and other important commercial crops. Damage symptoms Phytophthora causes root rot, seedling damping off and rot of stems, bulbs [...] Plants wilt and the crown leaves drop off. Life cycle and appearance of Blight of pepper Phytophthora species are very destructive organisms belonging [...] rapidly when the water content of the soil or substrate is higher than normal or optimal for crop growth. How to prevent Blight of pepper Apply hygiene measures

• The advantages of early adoption of biological crop protection

  February 1, 2024

  The use of chemical pesticides is under pressure due to a variety of reasons. From environmental concerns and stricter regulations to the decreasing efficacy [...] pest resistance to chemicals The decreasing efficacy of chemical pesticides due to the development of resistance in pests is a pressing concern. As pests [...] growers can proactively address the development of pest resistance. This involves implementing a variety of beneficials that are less susceptible to resistance

• Root rot of carrot

  exhibit by necrotic leaf spots Life cycle and appearance of Root rot of carrots The fungus of R. carotae has delicate, simple morphological features hence [...] only host plant of the fungus. How to prevent root rot of carrot Studies have shown that 3several key factors influencing the occurrence of blemishes and [...] black spots over the entire surface of the carrot. These spots gradually change into larger dark brown to black lesions of various shapes. The lesions can

• Foot rot of cereals

  the point of infection around the milky ripe stage (GS 75). Later infections may result in infection of the grain without obvious bleaching of the ears [...] appearance, although this is not always the case. Life cycle and appearance of Foot rot of cereals Microdochium nivale , a fungal pathogen responsible for causing [...] dark lesions and rotting of roots and stems. These visible signs serve as key diagnostic features for identifying the presence of the pathogen in affected

• Loose smut of barley

  emergence. The first sign of infection is the appearance of a smutted ear. Instead of normal tissue, the ear contains a mass of olive-brown smut spores. [...] cycle and appearance of Loose smut of barley The seeds are infected during flowering and the infected seeds are the primary source of inoculum in the next [...] affects barley and can destroy a large proportion of the crop. It is also known as barley smut, or loose smut of barley. Damage symptoms Infection by Ustilago

• Downy mildew of rose

  On the underside of the leaf fluffy growth appears which is first white and later turns grey-brown. This is, in fact, the sporulation of the pathogens extruding [...] sparsa is a plant pathogen that causes plant diseases, such as downy mildew of rose and diseases on blackberries, raspberries and other Rubus species. Damage [...] split and one or both parts to possibly shrivel. Life cycle and appearance of Downy mildew Pathogens causing downy mildew are not fungi but Oomycetes and

• Black leg of seedlings

  infection is the easy stripping of the skin from the root cortex with a finger nail. Life cycle and appearance of Black leg of seedlings Pythium belongs to [...] and very little of the root system survives. On the border between air and soil or substrate the plant turns brown. A typical symptom of a Pythium infection [...] conditions, especially dehydration. Germination of the oospores is stimulated by exudates from roots of a susceptible host nearby. The oospores germinate

• Pierce's disease of grapevine

  in olive. Damage symptoms Grapevines: Primary infection of leaves results in leaf scorch. Part of a green leaf suddenly dies and turns brown with adjacent [...] occur on the underside of the leaves. These lesions start out in a light-brown colour, turning to dark-brown or necrosis. Fruits of infected trees are much [...] foliage becomes thinner, but the trees don’t die of the disease. Olives: Scorch symptoms and desiccation of twigs and small branches occur on infected leaves

• Bacterial canker of tomato

  only occurs in the second half of the season. The first symptoms are wilting of the lower leaves and subsequent expansion of the wilt upwards. Cutting the [...] on is round, hence the name ring rot. Life cycle and appearance of Bacterial canker of tomato Clavibacter is seed-borne and tuber-borne and primary infection [...] rotation in field crops of at least two years and alternate with a non-host crop Apply deep-ploughing to stimulate the decay of crop residues Prevent plant

• Leaf spot of strawberry

  clavispora in the case of root and crown rot (of strawberry), first found in The Netherlands, and Pestalotiopsis longisetula in the case of leaf spots, such [...] fungus seems also able to cause fruit rot. Life cycle and appearance of Leaf spot of strawberry Not much is known about the life cycle. The fungus produces [...] such as leaf spot of strawberry and fruit rot reported mainly from Brazil. The genus is quite complex, so the taxonomy may change. Pestalotiopsis clavispora