PORTHOS effervescent tablet is an exclusive fungicide, based on microorganisms, that protects sunflower crops from their primary specific diseases, being extremely efficient against white mold (sclerotinia).
How PORTHOS effervescent tablet works
The active substances from PORTHOS effervescent tablet deteriorate the cellular walls of the patogens and keeps B.Cinerea (the fungus that generates sclerotinia) at bay. The treatment with PORTHOS effervescent tablet can be preventively applied, thus successfully protecting sunflower crops from their primary specific diseases, with an extremely efficient effect against white mold. (sclerotinia).
How dangerous is sclerotinia
How we can recognize a sclerotinia infection:
- Stem. The infection with cu sclerotinia is produced at the base of the stem, in plants that are in advanced stages of vegetation. On the stem’s surface patches white-grey spots, covered with felty mycelium, that produces a softening of the tissues and medulla, followed by the leaves withering and eventually the whole plant wilting.
- Root. The simptoms of the root base are similar with the ones of the stem base.
- Leaves. The tissue of the leaves will appear altered and discolored. On the flower heads, brown spots will be noticeable an the tissues will be soft and moldy, afterwards falling on the ground and disintegrating.
- Seeds. When the seeds are attacked, you can notice the appearance of yellow spots that can reduce the germination faculty. The oil from the seeds that are affected by sclerotinia is bitter. From the fungus’ mycelium, in the attacked areas of the plant, will appear the sclerotia (small hard, black lumps, of various forms and sizes). In case of pathogen B.Cinerea, which spreads during the growing period, these sclerotia are small and appear to be at the base of the seeds. From sclerotia result mycelial filaments that produce infections on the plant, generating new sclerotia and determining repeated secondary infections.