Introduction
Fungal diseases are a problem in many crops. They can be recognized by several damage symptoms. A single fungal infection is able to cause a combination of these damage symptoms, that can differ per crop.

Biology
Rotting and wilting are often caused by soil pathogens, infecting plants via the roots. Plant strenghteners like TRIANUM-P and TRIANUM-G reduce the chance of infection by soil pathogens. These products do not control fungi, but form a protective layer around the roots. The fungus Trichoderma harzianum strain T-22 in TRIANUM-P and TRIANUM-G put the soil fungi at a disadvantage by feeding on nutrient surplus and by spatial competition.

Damage symptoms

• Wilting tissue. Seedlings wilt and usually die off. Leaves and stems of larger plants wilt, discolour and whiter.
• Dying tissue (necrosis). Visible as small yellow brown coloured spots, that can increase in diameter or gradually extend over the tissue. Tissue can get discoloured over larger areas. Spores, visible as powder or 'fluff', can be formed on these spots. Leaves and stems are covered by mycelium. Usually visible as a thin, felt-like, white to dark grey layer extending over the plant tissue. Development of light orange, yellow or brown discolouring spots/dots, on leaf- or stem surface (rust). Spores break through the leaf or stem surface after some time. Visible as small, coloured bulges covered with a similarly coloured fine powder. Deformation of leaves, stem, flowers and or fruits. Root- and/or stem rot. Visible as rotted plant parts. The tissue usually colours brown or black. Mycelium and spores can become visible as 'fluff' or powder. Tissue parts get slimy. Parts above usually die off.