Before chlorotalonil will be lost from the Arsenal of fungicides, producers are advised to try substitution strategy developed for their own varieties, diseases and agricultural systems.

Spraying to protect the flag leaf is perhaps the most important point for the application of a fungicide on wheat, as it protects the top two leaves, which give about two thirds of the final crop.

CHLOROTHALONIL is still a major component of fungicide programs for the protection of wheat, but farmers must now look for and try alternative options in preparation for the time when CHLOROTHALONIL will no longer be available on the market.

This problem is further complicated by the growing threat posed by resistant pathogens poses to the effectiveness of the chemical composition of pesticides SDHI, while some key active substances, such as epoxiconazol and fenpropimorph also face the "axe" of regulatory bodies.

The two main alternatives are MANCOZEB and folpet, both of which have an integrated protective activity against disease is the number one wheat – Septoria leaf blotch of wheat.

"As a rule, folpet is not as effective as CHLOROTHALONIL against Septoria, but it gives you an additional advantage against rust, and there are indications that it prevents the absorption of azole how chlorotalonil," says Dr. David Ellerton, specialist in plant protection.

Many producers probably have not used folpet, so it's worth a try to see how it works as an alternative, the expert said: "a Small "test" area of a farm can provide valuable information about how various products and strategies of the spraying work in local conditions."

"It's not just about the search for alternative fungicides, but also on the use of any product in a more focused way. This gives you the ability to manage resistance in pathogens and makes financial sense," said Allerton.

The expert reminds producers that the resistance of varieties to disease is only a guide, especially for rust, where the changing of yellow rust strains can overcome specific resistance genes in varieties.

We cannot allow any disease was established on the field, because the treatment is medications chemistry of triazole and SDHI.

It is extremely important to apply fungicides at the correct growth stage and observe the intervals between treatments is 3-4 weeks. For protection in between you can try a temporary fungicide.

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