• Black leg of seedlings

  are in a sub-optimal condition or suffer from stress, caused for example by too much water, too high or low temperatures or sudden fluctuations in temperature [...] soil or substrate. Oospores are dispersed when soil particles are moved around by humans or machinery. Pythium can survive very well in the soil or substrate [...] temperature. Pythium ultimum mostly occurs at low soil or water temperatures and causes among others cereal diseases. Damage symptoms Pythium affects roots

• Isarid: The Foundation of a Good IPM Program

  finished crops. It can be used as a drench, a sprench, or a foliar spray. In propagation, a drench or sprench can put the material into the growing medium [...] humidity; Koppert recommends 50 percent relative humidity or greater and suggests applying after watering or irrigation if humidity is lower. The product is also [...] contains live fungal spores. When those spores contact a susceptible insect or mite, they attach to the pest, germinate, penetrate the cuticle, and grow

• Rhizoctonia solani

  inhabitants. How to prevent Thanatephorus cucumeris Sterilize the soil or substrate (chemical or heat) Use clean propagation material and disinfected seed Disinfect [...] fungus produces basidiospores. These spores don’t play a role in the epidemics or dispersal of the fungus, only the mycelium is important in this context. [...] g fungus, that is very persistent in the soil. It overwinters as mycelium or sclerotia in the soil and on crop residues. It is also seed-borne. Thanatephorus

• Fusarium wilt

  mycelium cells) or mycelium. Survival is also possible on seed, greenhouse structures, tools and machinery. Primary infection is either seed-borne or takes place [...] at the root tip or in small wounds, for example where lateral roots branch off from the tap root. How to prevent Fusarium wilt Remove or destroy crop residues [...] crops. Many species are considered weak pathogens and can only infect wounded or stressed host plants. Damage symptoms Fusarium fungi cause vascular wilt,

• Powdery mildew

  most crops, the white colonies later turn brown or grey. Severely affected leaves may turn yellow, curl up or drop off. Life cycle and appearance of Powdery [...] than a few hours. Powdery mildew spores, either ascospores or conidia, don’t need nutrients or water for germination. In general, the development rate of [...] barely survive in the absence of a living crop. They survive as ascospores or perithecia, structures containing ascospores. Ascospores have not been found

• Grey mould

  many environments. It survives in plant parts like bulbs and crop residues or as sclerotia (drought- and cold-resistant structures) in the soil. Damage [...] flowers, usually small round specks occur first, called ‘pocks’. These may or may not grow into larger grey-brown lesions. The symptoms on fruits, flowers [...] / Botrytis cinerea) is considered a weak pathogen, only infecting weakened or damaged plants. How to prevent Grey mould Make sure the crop grows regularly

• Gummy stem blight

  fruits. The symptoms on stems, leaves and inside the fruits may occur together or individually. Life cycle and appearance of Gummy stem blight Mycosphaerella [...] can be infected directly, through wounds, hydathodes (the end of leaf veins) or the hair bases. Stems are infected through wounds and by the infected leaves [...] crop prevent condensation on all plant parts at all times Extra Silicon and/or Calcium nutrition hardens the cell walls and makes it harder for the fungi

• Grapevine powdery mildew

  most other grapevine pathogens, it does not require free water (such as rain or dew) to infect, making it a persistent threat throughout the entire growing [...] through two primary mechanisms: as dormant mycelium within infected buds or as chasmothecia (sexual fruiting bodies) attached in the bark crevices and

• FytoFert S

  Crops Canola, Cereals, and corn Learn more about FytoFert™-S Pack size: 2 x 2.5 gal Presentation: Liquid Concentration: 40% Free Sulfur Downloads Fytofert S grapes brochure FytoFert S - Row Crops Broc

• Bacterial canker of tomato

  infection. In tomato, growers must either destroy the infected crop entirely or, if the crop is old, only the plants in the infected area, with a substantial [...] farm, are labelled as ‘suspect’ that year. On the infected field no potatoes or other Solaneceaous crops can be planted for five years. On other fields on [...] greenhouse crops and by water in field crops, for example through splashes of rain or irrigation. Both in greenhouses and in the field, spraying may also spread