Avena sterilis

Today we are going to talk about a kind of oatmeal that is not what we are used to. It is the crazy oat also known as ballueca or bad oats. Its scientific name is Avena sterilis and it is considered a harmful weed mainly in extensive winter crops. It mainly affects cereals, rapeseed and legumes that serve as grain or forage. It is also present in other crops that are included in rotation with these.

In this article we are going to tell you all the characteristics, what damage it can cause in your crops and how to control Avena sterilis.

Main features

Avena sterilis belongs to the group of grasses and is considered a weed. It specifically affects some crops such as barley, rye, wheat and triticale. It is one of the species that has a narrow leaf and is very abundant in cereal crops in the northern half of the country. It has become a species that attacks or negatively affects the main crop. The time of appearance begins in October and ends in April.

To be able to identify crazy oats, you must know what its main characteristics are. We must know that not only does the Avena sterilis species exist, but that there is also another group of plants that have similar characteristics. In order to identify the crazy sand, we must point out some main keys that will help us to identify it:

  • The most common species of wild oats are Avena fatua, Avena sterilis and another species known as Avena ludoviciana. All these species can negatively affect crops, just as the one we mentioned at the beginning does.
  • Among the morphological characteristics that these plants possess is that they are coiled and do not have atria. They can be identified with the naked eye in the pre-flowering season. And it is a rolled weed that does not have even headphones and its ligule is membranous.
  • It is a very annoying plant for crops and difficult to eliminate since it has a low natural mortality. Its Nascence is relatively high and it has between 25 and 45% of the seeds of the soil.

Damage caused by Avena sterilis

There are numerous treatments to control crazy oats. However, we are going to look for the one that has a greater efficiency in cereal crops that are mainly affected. The first thing is to know the damage that this plant can cause to be able to identify this species correctly. These are the damages that Avena sterilis can cause in cereal crops:

  • It produces greater competitiveness with crops: you have to know that all crops fight for the nutrients and resources that are in the soil. All the space where the crops are planted has a limited amount of space to be able to extend their roots and absorbs the necessary nutrients to develop. If we find a plant whose natural mortality is low and its expansion rate is high, competitiveness for resources will increase. This can cause significant economic losses at very low densities. We are talking about densities of between 5 and 25 plants per square meter.
  • Lack of control: if the populations are not properly controlled, the wild oats will multiply very quickly. And it is that its density can be doubled in just one year.
  • Elimination: with effective control measures we can almost completely eliminate the species in a period of 4-5 years.

Unlike the fingers thought of other species, it is not an invasive plant. The land simply grows but it is not usable by humans. Being a plant that has good characteristics and adapts easily to ecosystems, it usually lasts for a long time. This is what makes it a weed. We must not confuse weeds with an invasive plant. Their existence should only be eradicated in growing areas where they disturb other plants and generate problems in production.

Control of Avena sterilis

As we have mentioned before, there are numerous treatments to control the spread of Avena sterilis. However, we are going to mention which treatment is most effective in controlling the development of mad oats. The most effective treatment available to date is the use of a selective post-emergence herbicide from Syngenta. The efficacy of this herbicide is very good on barley, wheat, rye and triticale crops.

Let’s see what the doses are and how we should use this selective herbicide to make the most of its benefits:

  • Dose: the percentage for the effectiveness of the minimum dose to be good amounts to 96.8%, the maximum dose being 98%.
  • Time of application: it is not worth applying it at any time but you have to find a way to increase its effectiveness. If we apply at the beginning of the godson, the efficiency against this plant is 96.8%, while if we use it when the godson was there, we will achieve an efficiency of 98.1%.
  • Different species: before we mentioned that there are numerous species of crazy oats and that we must recognize which each one of them. However, this herbicide acts efficiently against species such as Avena sterilis, Avena fatua and Avena ludoviciana.

One of the tips that are given to those people who apply this herbicide is the following. You have to place the herbicide between the beginning and the end of the godson and you have to spray. We must look for the moment when the weeds have started to grow and are in their active growth. In addition, it is interesting to use this herbicide with favorable conditions of soil moisture and adequate temperature. The dose of the pillars generally between 0.75 liters for each hectare of land. Depending on the development of the oats and the level of infestation of all the crops, this dose may be somewhat higher or lower.

I hope that with this information you can learn more about Avena sterilis and how to control it.

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