This disease is one of the most devastating for the cultivation of wheat since it affects the vital parts of the plant, and many control methods are often not effective.
How to identify the wrong foot?
The disease presents radical necrosis black, which can cover the neck of the plant and all its root system. On the other hand, other symptoms are yellowing of leaves and the appearance of white spikes, which causes plants to die prematurely after the heading.
This does not produce wheat grains, although if it does, the size of them will be much lower compared to normal. If humidity is high, the white spikes become black by the presence of saprophytic fungi. Black roots of plants or dark brown color are indicators that have been infected with foot wrong.
Preventing foot wrong
Unfortunately, there are no resistant varieties or treatments that can get to combat this parasite, so prevention is necessary.
Gaeumannomyces graminis fungus is a colonizer of soil and usually enter the premises through the use of contaminated equipment, tools for minor and footwear, or through the legs of animals. Most likely, spend between 8 and 10 years before the fungus is detected at the site, and once you have entered the soil, it will remain forever.
In the presence of foot wrong in an area, the most effective way to reduce the damage this causes method is crop rotation. However, crop rotation also involves a number of aspects to consider. In farms with a history of this fungus should not be sown wheat after triticale or barley.
Although these crops are much more tolerant to attack foot wrong, the causative agent of this terrible disease can develop and multiply in these species, maintaining more than one season and increasing its population. On the other hand, the high level of soil moisture generated by poor drainage may favor infection foot wrong. For this to be resolved, you will have to improve soil drainage.
Fungicides to control the wrong foot
In the market, there are a lot of seed disinfectant fungicides that help slow the development of foot wrong. However, the pathogen by attacking the plant at any stage of development agent makes fungicides are of low efficiency since the period during which the product remains active is limited and plants again are deprotected to two or three months.
Anyway, under the conditions of late spring or crops, the use of disinfectants fungicides can reduce the level of attack. It should be clear that no product will control the fungus strictly.