Wounds as a way of entry for pathogens
Any wound on a tree, whether it be due to pruning, building sites, storm damage etc., represents a potential way of entry for pathoges, especially wood decay fungi. The arborist can wait for the right time of the year to prune by considering increased periods of fungal sporulation associated with wood decay fungi, such as during autumn in the northern hemisphere. However, the easy-to-apply Avengelus gel can be used as a preventative treatment after pruning, which would mitigate the damaging effects of harmful fungal spores during virulent periods.
Isolation of wounds
The treatment of wounds is of particular importance for the long term preservation of trees. When wounds occur, the tree tries to isolate itself against bacteria and fungi, etc., through compartentalisation and zone line formation. This active defence in trees includes the production of secondary metabolites which act as an antibiotic, e.g. phenolic compounds. The synthesis of these defence compounds is in part triggered by salicylic and jasmonic acid. Trichoderma atrobrunneum (former harzianum) significantly increases the amount of salicylic acid already formed at the infected area.
When Avengelus is applied to fresh pruning wounds, it acts as a ‚protector‘ by parasitising incoming spores from decay-causing fungi. The application of the product can also indirectly lead to faster wound closure, as a result. The patented gel formulation of Avengelus makes it easy to apply to wounds. It forms a protective film on the surface and prevents infection from potential pathogens. The gel helps to minimise the effects of pathogens, allowing the tree to grow and develop rather than tend to fungal infections during wound closure. Depending on the size of the wound, repeated application of the gel is recommended over time.
Avengelus and its active ingredient, Trichoderma atrobrunneum, is most suitable for tree wounds, as it can be applied with a brush around the wound and even inside cracks, which develop after a period of desiccation. This further minimises the risk from disease entry.