Damping-off

lag in growth. Seedlings start falling over, also called ‘damping-off’, hence the name damping-off disease. In slightly older plants, the leaves lose their [...] from the root cortex with a finger nail. Life cycle and appearance of Damping-off Pythium belongs to the Oomycetes, a separate group of microorganisms and [...] are entirely saprophytic, so these do not harm plants. How to prevent Damping-off Use resistant cultivars or graft on tolerant cultivars Use clean planting

Southern blight

inhabits the soil, and is responsible for root and stem rot, wilting and damping-off of seedlings. It has a wide range of hosts, around 500 botanical species [...] this vigorous mycelium. The fungus may reduce the stand of the plants. Damping-off may occur during germination or establishment of the plant (seedling phase) [...] softening of the stem, cotyledons, and roots. The main damage caused by damping-off is reduction of the stand, meaning it is very often necessary to replant

Blight of pepper

commercial crops. Damage symptoms Phytophthora causes root rot, seedling damping off and rot of stems, bulbs, tubers, leaves and fruits. Several Phytophthora [...] lesions occur on the larger roots. Plants wilt and the crown leaves drop off. Life cycle and appearance of Blight of pepper Phytophthora species are very

Pea blight, leaf and pod spot

The fungus is seed borne and thus also causes post- and pre-emergence damping off and dwarfing. Other Ascochyta species may also infect peas. Ascochyta

Black leg of seedlings

those of seedlings. Infected plants lag in growth. Seedlings fall over (‘ damping-off ’). In slightly older plants, the leaves lose their turgor or the leaf [...] 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

Apple collar rot

wide host range. Damage symptoms Phytophthora cactorum causes seedling damping off, a reduced root system and black discolouration of the roots. On the foot

Phytophthora blight

blight of potato. Damage symptoms Phytophthora causes root rot, seedling damping off and rot of stems, bulbs, tubers, leaves and fruits. Late blight or Ph

Fusarium spp.

Fusarium head blight or scab ) (anamorph/teleomorph) causes seedling damping-off . On the foot of the stem, brown discolouration occurs. Infected glumes [...] the root tip, or in small wounds, for example where lateral roots branch off the tap root. F. oxysporum grows inside the roots towards the foot of the

Apple scab

conidia extend faster and may merge. Infected fruits and leaves may fall off prematurely. The plants’ defence mechanism is to produce corky rings around [...] the fungus produces new pseudothecia in leaves that have already fallen off the trees. In response to the infection, the plants produce cork as a defence

Cercospora leaf spot

results in shot-hole appearance to the leaves. Severely infected leaves drop off prematurely results in reduced yield. Stem, petiole and pods are also infected