Disease Cycle
M. nivale begins by oversummering (surviving the summer) in thatch or soil as haploid mycelium or spores. When cool, wet weather arrives in the fall or winter the mycelium grows from thatch or soil and infects leaves. These environmental conditions also favor the development of asexual spores called conidia on conidiophores. These conidia infect leaf sheaths and blades near the soil. Wind and surface water will help aid in the spread of this disease as it will allow for the spores to contact near by healthy plant. The disease becomes very severe if allowed to spread from the leaf blades to the crown of the plant. This usually only happens under extreme circumstances, particularly if snowfall covers unfrozen ground.
Read more about this topic: Fusarium Patch
Famous quotes containing the words disease and/or cycle:
“Your responsibility as a parent is not as great as you might imagine. You need not supply the world with the next conqueror of disease or a major movie star. If your child simply grows up to be someone who does not use the word “collectible” as a noun, you can consider yourself an unqualified success.”
—Fran Lebowitz (20th century)
“The Buddha, the Godhead, resides quite as comfortably in the circuits of a digital computer or the gears of a cycle transmission as he does at the top of a mountain or in the petals of a flower.”
—Robert M. Pirsig (b. 1928)