What causes fertilizer burn in blueberries?
Blueberries are grown on a very large area in our country and are popular with many people. The current market price of blueberries is also relatively high, and the profit margin is fairly large, so more and more people are starting to grow them. When growing blueberries, however, fertilizer burn in blueberries often occurs. It seriously affects the growth of blueberries, so what causes fertilizer burn in blueberries? Below, the editor will give you a brief introduction. Let's take a look!
1. Poor fertilizer quality
When we apply farmyard manure, it is generally based on various kinds of excrement. This excrement is very rich in organic matter, and if it is not fully decomposed before being applied to the soil, it will generate a large amount of heat, causing fertilizer burn to the roots and leading to root rot and other problems. In addition, when applying organic fertilizer, many fertilizers are made from industrial and agricultural waste or sludge. Although the labeled amounts of these materials can reach the nutrient levels of organic matter and nitrogen, phosphorus and potassium, many of the raw materials themselves also contain large amounts of heavy metals and other harmful substances, causing serious damage to the roots.
2. Improper chemical fertilizer use
During the growth of blueberries, when applying chemical fertilizers, if ammonium nitrate, phosphorus-potassium and other nitrate nitrogen fertilizers and chlorine fertilizers are used, they can very easily cause damage to blueberries. Moreover, when many people buy chemical fertilizers, they may ignore the quality of the fertilizer and use some inferior chemical fertilizers. The toxic and harmful substances in some inferior chemical fertilizers exceed the standard, and after use they very easily cause root rot at the fertilized site, yellow leaves, decline in tree vigor, and so on. In severe cases, they can also cause the branches and leaves to dry up and die, seriously affecting the yield and quality of blueberries.
3. Wrong fertilization position
When fertilizing, we must pay attention to controlling the fertilization position. If the fertilization position is wrong, the impact on the growth of blueberries is also very great. When applying chemical fertilizers, if hole application or furrow application is used and it is too concentrated, the concentration in that area will become too high, causing root burn and death and resulting in fertilizer burn. If the fertilization position is too close to the large roots of the blueberry, then when too much fertilizer is applied it is generally very easy to cause fertilizer burn, resulting in partial root rot and harming the growth and yield of the blueberry.
4. Excessive fertilization amount
The economic value of blueberries is relatively high, and many people are happy to invest in them. However, when planting, especially for various beginners, the mistaken approach of blind fertilization is widespread. In order to make blueberry trees grow as quickly as possible, many people use the method of excessive fertilization, resulting in too much fertilizer and fertilizer burn. Therefore, when fertilizing, everyone must pay attention to controlling the amount of fertilizer according to the growth stage of the blueberry, and must not over-fertilize, so as to ensure normal growth of the blueberry.
The above is a brief introduction to what causes fertilizer burn in blueberries. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!