• Powdery mildew

  epidemics and spore dispersal by rain is negligible, since spores explode when in contact with water for no more than a few hours. Powdery mildew spores, either [...] 18-25 °C. High relative humidity (RH) promotes germination of spores but inhibits spore production, so the net effect of the RH is very small. Wind and [...] especially in greenhouse crops they don’t play a role in the epidemics. Fungal spores germinate on the leaf surface and the germ tubes grow and branch out on

• Beneficial microorganisms

  insect hosts. The fungi produce spores that attach to the insect's cuticle (outer covering). Once attached, the spores germinate, penetrate the cuticle [...] insect's death. Spore production: As the insect succumbs to the fungal infection, the fungus continues to grow. Eventually, it produces more spores, which can

• Black sigatoka disease

  distances, the conidia are splash-dispersed within the crop. Both types of spores cause the exact same symptoms. They enter the leaf through the stomata. [...] conidia or grow across the surface and infect adjacent stomata. Both types of spores can germinate within two or three hours under humid conditions, but infection [...] cultivars Remove or burn infected leaves or at least stack them, so the spores cannot be discharged from the lower leaves in the stack Use under-canopy

• Blight of pepper

  bulbs or in the soil in different stages: as oospores (sexual overwintering spores), sporangia (special structures which can either germinate directly or produce [...] formed from the overwintering structures which infect the host. Zoospores are spores with flagellae, which enable them to move through water. Infection is usually [...] surface and new sporangiophores (structures containing sporangia, a type of spores) with sporangia are formed that protrude through the stomata. Secondary

• Fusarium head blight or scab

  lower leaves. The spores are dispersed upwards to the ears by splashing rain drops or wind. On the infected ears, the typical pink spores are produced which [...] of Fusarium head blight or scab Most Fusarium species only make asexual spores. Some also produce ascospores. In general, most Fusarium specieshave a similar

• Apple collar rot

  bulbs or in the soil in different stages: as oospores (sexual overwintering spores), sporangia (special structures which can either germinate directly or produce [...] from the overwintering structures, which infect the host. Zoospores are spores with flagellae, which enable them to move through water. Infection is usually [...] surface and new sporangiophores (structures containing sporangia, a type of spores) with sporangia are formed, that protrude through the stomata. Secondary

• Phytophthora blight

  bulbs or in the soil in different stages: as oospores (sexual overwintering spores), sporangia (special structures which can either germinate directly or produce [...] formed from the overwintering structures which infect the host. Zoospores are spores with flagellae which enable them to move through water. Infection is usually [...] surface and new sporangiophores (structures containing sporangia, a type of spores) with sporangia are formed that protrude through the stomata. Secondary

• Root rot of carrot

  best for in vitro sporulation. Spore germination in vitro requires free water. The pH for growth, sporulation, and spore germination ranges from 3.4 to [...] southwestern Norway). Spore germination was inhibited in nonsterile soil but not in similar soil that had been steam sterilized. Spore germination in nonsterile

• Black leg of seedlings

  which subsequently zoospores are produced. Zoospores are spores with flagellae, which enable the spores to move through water. The zoospores are chemically [...] ms and is therefore not a real fungus. It survives as oospores, resting spores which are resistant to unfavourable conditions, especially dehydration.

• Damping-off

  which subsequently zoospores are produced. Zoospores are spores with flagellae, which enable the spores to move through water. The zoospores are chemically [...] ms and is therefore not a real fungus. It survives as oospores, resting spores which are resistant to unfavourable conditions, especially dehydration.