Peanut yellow leaf more iron

Question: According to a call from the readers, in the main peanut producing areas, physiological diseases of peanut yellow leaf disease occur frequently every July and August. I would like to ask what causes this.

Wang Hu A: The reason is due to the lack of iron in peanuts.

I. Symptoms: When peanuts are deficient in iron, they first appear as chlorosis of the upper young leaves, while the old leaves and veins of the lower part remain green; when the iron is severely deficient, the veins of the leaves lose their green and yellow, and the upper new leaves become white. Brown spots appear necrotic, dry and fall off. Compared with the chlorosis caused by nitrogen deficiency and zinc deficiency in peanuts, the outstanding performance of iron deficiency and chlorosis in peanuts is that the leaf size has no significant changes and the chlorotic chlorosis is significant. The lack of nitrogen caused by yellowing and chlorosis often leaves thinner, smaller plants, dwarf; zinc deficiency can cause large clusters of leaves, yellow and white small leaf spots.

Second, the prevention and control methods: In the production of 0.1% to 0.2% of the ferrous sulfate solution for foliar spray, spraying once every 5 to 7 days, continuous spraying 3 to 4 times; can also choose to use green leaf treasure, its The main ingredients are iron chelates and some trace elements. The spraying effect is better than simply spraying ferrous sulfate. Generally, 25 grams of water is used for 15 kilograms of mu and the spray is evenly sprayed. The spray is applied once every 10 days or so, continuous spraying. 2 to 3 times.

Health Ingredients

Health foods contain a certain amount of functional health ingredients, which can regulate the functions of the human body, have specific effects, and are suitable for specific groups of people. General food does not have specific functions, and there is no specific range of people to eat. Health food cannot be directly used to treat diseases. It is a human body mechanism regulator and nutritional supplement.

The human body needs many nutrients, such as water, protein, fat, carbohydrates, vitamins, minerals, dietary fiber,etc. Nutritional products are generally rich in these nutrients and suitable for everyone. Its nutritional value of health ingredients is very high and it is suitable for everyone to drink. While health food is food with specific health functions and only suitable for specific groups of people, and its nutritional value is not necessarily high. Therefore, the various nutrients that the human body needs are still obtained from three meals a day. Of course, health care products are better in some aspects. Health care products can obtain more fixed health functions than nutrition products. The minerals of the human body are not balanced, so health care products have a greater advantage in some aspects.

DHA, NMN, MCT, CLA, Melatonin, Creatine

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