Botrytis causes a brown/grey powdery coating on plant tissue. Many crops are susceptible to this fungal infection, both outdoors and under glass. Above-ground dead organic material is first affected, after which the fungus spreads to living, healthy plant tissue.
Defence against this grey (necrotrophic) fungus takes place via the jasmonic acid signal pathway. We advsie to apply Cuprum as it plays a specific role in the production of defence proteins via the jasmonic acid signal pathway.
We have particularly positive experiences with salicylic acid in tomato production, where it is used to dry out the wounds produced when the leaves break off that make the fruit more susceptible to botrytis. A callus (wound tissue) even develops along the edges of the wound.
The application of SilicaPower also has a positive effect: the cell walls and the leaf surface are strengthened so that the fungus has less opportunity to infect the plant.
Finally, the elevated pH achieved with the application of Ds-Lime also affects fungi such as botrytis, which survives less well at a pH of 12.
For most crops (see separate information for tomatoes), we recommend spraying Cuprum or applying it via LVM. Cuprum stimulates the production of proteins in the jasmonic acid signal pathway.
For tomato production, we recommend administering SalicylPure in the A fertilizer feeder.