The grower Lao Wang has planted a few acres of amaranth. Recently, he has had problems. He thought that the leek was sick. It was useless to take some medicine. Finally, he called a grandfather who knew some agricultural technology in the village and asked him. What is the situation? Grandpa said that you have got sick, it is clearly a deficiency, and Pharaoh knows that leek is a deficiency and promptly remedies. I believe that many amaranth growers will also encounter the problem of amaranth deficiency. Today, Huinong.com compiled a detailed list of specific diseases and solutions for the lack of amaranth cultivation.

Simply put, amaranth deficiency refers to some abnormal growth symptoms of amaranth during the growth process due to the lack of certain nutrients. The reason why the leek is deficient in the disease is related to some of its own properties. Amaranth is a perennial vegetable. During the cultivation process, the lack of certain trace elements in the soil is prone to occur, especially in the old amaranth field.

At present, the common deficiency syndromes of amaranth are mainly iron deficiency, boron deficiency and copper deficiency. Let's take a closer look.

Iron deficiency

It mainly occurs on the old leeks, especially the older the sputum, the more serious the disease. At the time of onset, the leaves completely lost green, showing a bright yellow color, which was slightly pale white. There were obvious yellow-white and long strips on the leaves of the chlorotic part, and the shape did not change. Generally, the above symptoms began to appear about 10 days after emergence.

Boron deficiency

Boron is an essential trace element of amaranth. When boron is absent, the whole plant is chlorotic and the heart leaves are yellow. When the disease occurs, there are obvious yellow-white and long-striped spots on the leaves. If it can not be effectively controlled, the final blade is twisted, tissue necrosis, and the onset time is not related to iron deficiency, which occurs about 10 days after emergence.

Copper deficiency

The onset time is relatively late, mostly on the old leek. In the early stage of the disease, the plant grows normally. When the amaranth grows to the maximum height, the disease gradually becomes obvious. The part of the top leaf below 7 cm gradually appears chlorotic fragment of about 2 cm, which looks like a dry tip, generally starting 20-25 days after emergence. Symptoms appear. In addition to iron deficiency, boron deficiency and copper deficiency, there are also magnesium deficiency. Magnesium deficiency can cause yellowing of the outer leaves. All of these affect the yield and quality of amaranth.

Control method

When selecting plots, it is necessary to select fertile soil and convenient drainage and drainage; when planting the land, it can increase the quality of farmyard manure to promote plant growth and improve disease resistance; implement a 4-5 year old crop rotation system; When it is a symptom, it can take corresponding measures according to the specific performance.

Iron deficiency can be sprayed with 500 times of ferrous sulfate. Boron deficiency can be sprayed with 200 times of borax. Copper deficiency can be sprayed with 700 times of copper sulfate. If it is a complication, a mixture of 200 times of borax and 500 times of ferrous sulfate or a mixture of 200 times of borax and 700 times of copper sulfate may be sprayed.

    The above is the disease and preventive measures for the deficiency of amaranth cultivation during the cultivation of amaranth. I hope to help you.

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