![图片[1]-Root developed water peanut, the impact on crops can not be ignored, what are the prevention and control methods?-msoen](https://www.msoen.com/wp-content/uploads/2022/08/1660364988704.png)
Currently, there are no herbicides on the market that can safely and effectively kill this invasive species and completely eradicate it. Because the water peanut is very resistant and has a particularly developed root system, the persistent root can only clear part of the surface, and the root system will sprout again the next year.
So in order to eradicate water peanuts from the fields, we farmers still use the most primitive and stupid method – manual removal. However, because this method is time-consuming, it is not as fast as water injection. Therefore, it also makes removal more difficult. Water peanut, also known as lotus seed hollow grass, commonly known as revolution grass, is an invasive alien that can be fed to pigs. They live in rice paddies and dry lands, and they grow and spread very quickly. Because they can grow adventitious roots on stem nodes, they can take root quickly.
In addition, the roots are perennial and difficult to remove manually. After pruning stems and leaves, they can quickly return to growth, which is time-consuming and laborious. Therefore, it is “disgusting” to people. Crop variety emerged as a vicious weed. As a result, the ground is covered with water peanuts. What methods are used to prevent and control it?
In fact, water peanut is a typical alien invasive plant. It originated in Brazil and entered China in the late 1930s. At the time, it was grown in China as crude fiber feed for poultry and livestock. I just never thought that this kind of plant would not taste good after planting, and poultry and livestock do not like to eat it.
And just then, this seemingly ordinary, insignificant invasive plant spread across the country with astonishing speed and reproductive ability. Today, it is increasingly damaging our native plants, crops and water sources.
The reason why water peanut can spread quickly and cover a wide range is mainly because of their strong adaptability to the environment. It can withstand both drought and flood. It can germinate and grow at the temperature of 5℃, and the growth rate reaches the peak in the temperature range of 200℃-30℃.
In addition, its underground rhizomes and upper plants have the ability to reproduce. Roots can spawn many tubular branches, and a new root can sprout at the junction between each tube, as long as it is separated as a single individual. It can live in water and grow in soil. It can root in water and soil and grow well. In addition, it blooms every autumn and the seeds are scattered everywhere by the wind, which is why it floods.
Currently, there are no herbicides on the market that can safely and effectively kill this invasive species and completely eradicate it. Because the water peanut is very resistant and has a particularly developed root system, the persistent root can only clear part of the surface, and the root system will sprout again the next year.
So in order to eradicate water peanuts from the fields, we farmers still use the most primitive and stupid method – manual removal. However, because this method is time-consuming, it is not as fast as water injection. Therefore, it also makes removal more difficult.
To clean up, most farmers uproot it as they plow or turn over the soil, pick up each twig, put it in a bucket or bag, then remove it from the field, leave it in the open to wait until the sun has completely dried, and burn it so as not to give it a chance to regenerate.
We need to continue this process for two to three years so that we can clear the ground of peanuts. Otherwise, it will surely come back to life, sprout from new roots, and spread again. Although the labor cost of using this method is high, it is the only effective way to achieve the goal of complete eradication. Moreover, no other method can be completely eliminated.
For this pest weed, especially in rice fields, herbicides can only be used to remove upper stems and leaves. There is no need to see that water peanuts can thrive again. The water peanut is powerful enough to survive beyond our imagination. If water peanuts are pulled out manually, they can regenerate again if they are not dried on a concrete floor and dried thoroughly. If the next rain, the water peanut will begin to grow again, very strong vitality.
It is best to prevent and control water fog in dry land. It can be covered with herbicide or black plastic film. Water peanuts like wet and sunny conditions. Black plastic film is used to shield them from sunlight. In the absence of sunlight and air contact, water peanuts can be removed.
However, in rice fields, this method is not easy to operate. It is not suitable to use plastic film on water surface, so it is impossible to block the sunlight of water peanut. If the area is small, you can pull it out manually. This is also the most common method. However, if the manual area is slightly larger, it cannot be easily pulled out manually.
Many wait until the water dries before spraying. This is also a way to remove moisture from peanuts. For example, using chronic glyphosate after the water has dried can remove these pesky water peanuts.
In addition, there are special water peanut net spray, water peanut has a good prevention effect. Glyphosate and glyphosate can be sprayed twice a year during the peak season of water peanut growth. In general, water peanut can be eradicated after two years of continuous use.
In short, it is still a long and difficult road to remove this kind of water peanut, but we still need to persevere, otherwise, this species will cause more serious damage to our ecological environment.
THE END
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