Studies since the 1960s have shown that the product has a positive effect on the disease resistance of crops. The reason that chitin is not widely used in agriculture and horticulture is due to the fact that up to 10 tons per hectare of ground shrimp shells had to be applied to see an effect. In practice this became far too expensive.
It was later discovered that chitin can be converted into chitosan through a chemical or enzymatic process. Chitosan is a much faster-acting substance than the raw substance chitin and is much easier to use in practice because it is more soluble. Chitosan is a much faster-acting substance than the raw substance chitin and is much easier to use in practice because it is more soluble….
A foliar spray with Hamerol works as a kind of corona vaccination. The leaves of the plant contain receptors that can recognize different substances. One of these substances is chitin, because it is found in the cell wall of pathogenic fungi and in the skeleton of insects. The plant responds to this by producing enzymes and proteins to protect itself. If a fungal infection actually occurs in the crop at a later time, the plant is immediately able to defend itself. This is the elicitor (= plant strengthening) function of Hamerol.
Addition of chitosan to the soil changes the microbial community in the soil in favor of fungi and bacteria that promote plant growth. This is caused by mycorrhiza-forming fungi and bacteria that release nutrients into the soil so that they become available to the plant roots. These fungi and bacteria form a protective layer around the plant roots and help protect them from pathogen attacks.
A resilient plant above and below ground, improved absorption of moisture and nutrients and an increase in the chlorophyll content in the leaves often leads to an increase in crop yield. Click below for a detailed description of the effect of chitosan in the plant.