Symptoms And Solutions of Abundance And Lack Of Mg, S, Fe, B

1. Symptoms of magnesium(Mg) deficiency: short plant; slow growth; Fruit can be small and undevelopable. Firstly in the vein between the loss of green, veins still keep green, then there will be brown or purple spots or stripes. Symptoms first appear in the old leaves, especially the old leaf apex.

Symptoms of excessive magnesium(Mg): withered, pale leaf tips, normal color at the base of the leaf.

Measures to solve magnesium(Mg) deficiency: ① Root spraying foliar fertilizer, such as magnesium sulfate solution spray, concentration of 0.02-0.05%.

Measures to solve of excessive magnesium(Mg): there is no excessive phenomenon of magnesium in general acidic soil. For calcareous soil or alkaline soil with relatively high magnesium content, it should be applied less or not to apply medium fertilizer containing magnesium.

2. Symptoms of sulfu(S)r deficiency: some symptoms are similar to when the medicinal plants lack of nitrogen. But the crops in the body of sulfur is not easy to move, so the lack of sulfur symptoms first appear in young leaves; Plant growth is blocked, plant short, thin stem, stiff, leaf recede green or yellowing.

Symptoms of excess sulfur(S): poisoning and blackening of rice roots may occur in poorly ventilated paddy fields.

Measures to solve sulfur(S) deficiency: 10 kg of ammonium sulfate per mu, or 10 kg of gypsum, or 2 kg of sulfur powder. Choose one as the base fertilizer. Ammonium sulfate can not be used as foliar fertilizer spray, but can be mixed with water.

3. Symptoms of Ferritin(Fe) deficiency: the crop body Ferritin can not be used again. These deficiency symptoms are from the beginning of the young leaves. Mainly chlorophyll is destroyed, between the veins of green. Veins are still green, serious, the whole new leaves into yellow and white.

Symptom of excessive Ferritin(Fe): the growth of the upper part is blocked, and the lower part of the old leaf tip between the veins appear brown, dark color. Ferritin intoxication is often associated with potassium deficiency and other reductive hazards. Pure intoxication is rare, so that it does not generally occur in dryland soils.

Measures to solve Ferritin(Fe) deficiency: ① Root spraying foliar fertilizer, such as the use of ferrous sulfate concentration of 0.2-0.4% solution on plant foliar spray.


4. Symptoms of Boron(B) deficiency: abnormal or stagnant growth of apical growth points; malformation of young leaves; shrinkage; chlorosis between veins; thickening of lower leaves; deepening of leaf color; stunted plants. The highest boron content in the plant body is in flowers, so boron deficiency is often shown as "flowering but not fruiting" in brassica napus, with prolonged flowering and poor fruit setting. Cotton appears "bud without flower", only now bud does not blossom. Wheat appeared "ears but not solid", less fruit, not full grain. Peanuts appear "shell without kernel" and other phenomena. When the fruit tree lacks boron, the fruit rate is low, the fruit is malformed, and the flesh is corked or withered.

Symptoms of Boron(B) poisoning: Boron moves with transpiration flow in the plant body, and when water transpiration dissipates, boron concentrates in the leaf fluid, and the parts with high concentration of boron accumulation show signs of chlorosis, scorch and necrosis. Leaf margins are the most easily aggregated, so one of the most common symptoms of boron poisoning is regular yellow edges at the leaf margins of crops; The accumulation of boron in the old leaves was more than that in the new leaves, and the symptoms were more serious in the old leaves.

Measures to solve Boron(B) deficiency: ① Root spraying foliar fertilizer, such as the concentration of 0.1-0.2% borax or boric acid solution spray.

Measures to solve Boron(B) poisoning: (1) if the time is not long, you can use plant power 2003 1000 times liquid foliar spray; (2) If you have excess boron from soil fertilization, it is recommended that you dilute the boron content in the soil by watering it. (3) If you are caused by excess boron through foliar spraying, it is recommended that foliar spray concentration of 0.2% calcium nitrate aqueous solution or other calcium fertilizer to solve the problem; (4) The soil around the plant is sprayed with lime powder and watered, because the main component of lime is calcium carbonate, which can neutralize the acidity of sandblasting and form calcium borate precipitation, which fixes the mobility of boron element and alleviates the absorption of boron ions by plant roots, thus reducing the phenomenon of boron poisoning.


Keeping your medicinal plant healthy requires specific attention to its environment and what you are feeding it, just like a mama birdie with her babies. By paying close attention to your plant and actively taking care of it, your harvest will be worth the wait! This is the only time of your life I’m going to say it’s okay to be a helicopter parent!

Please note that leaves which have been damaged will probably never recover or turn green, so you want to pay attention to other leaves for signs of recovery.

If you have more issues with your plants, do not hesitate could contact us freely.

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