Can potted osmanthus be fertilized with foliar fertilizer?
A article of experience and knowledge, introducing the related content of whether potted osmanthus can be fertilized with foliar fertilizer in the field of green plants. Let's take a look together.
Can potted osmanthus be fertilized with foliar fertilizer?
It is not recommended to spray foliar fertilizer on the tender buds of osmanthus盆景, as improper control of concentration can easily cause fertilizer damage. If it is necessary to spray, there are many precautions to consider. Fertilizing osmanthus in spring is recommended before new buds appear or when the tender buds have 1-2 leaves unfolded.
It is still not advisable to spray foliar fertilizer on the tender buds of osmanthus盆景, as improper control of concentration can easily cause fertilizer damage. If it is necessary to spray, there are many precautions to consider.
First, let's briefly understand foliar fertilizer
Foliar fertilizer, as the name implies, is a method of fertilizing by spraying a fertilizer solution on the leaf surface.
The principle of foliar fertilization is that the cuticle on the surface of plant leaves has many hydrophilic pores, through which the aqueous solution can enter the leaves and be absorbed.
Foliar fertilization has many advantages① Foliar fertilizer takes effect quickly, as it is directly absorbed by the leaves and can participate in photosynthesis immediately. Root fertilization needs to be absorbed by the roots and then transmitted to the leaves, which is slower than foliar fertilization.
② Foliar fertilizer can be applied specifically, if a certain element is lacking, it can be directly supplemented with foliar fertilizer.
③ Foliar fertilizer can improve the utilization rate of fertilizers. After root fertilization, fertilizers react chemically with elements in the soil, and some fertilizers are fixed.
The utilization rate of fertilizers is not high, while foliar fertilization does not have a complex soil environment, thus having a higher utilization rate.
Despite the many advantages of foliar fertilizer, it is still not recommended to use it when osmanthus has tender buds, for the following reasons.
1. The tender buds of osmanthus are delicate, and if foliar fertilizer is sprayed at this time, improper control of concentration can easily cause fertilizer damage, burning the newly emerged buds and causing them to fall off, which is very harmful to the growth of osmanthus.
2. There is no need to spray foliar fertilizer when osmanthus is germinating. The main function of foliar fertilizer is to supplement the deficiency of root fertilization, usually used when a plant lacks a certain nutrient or to promote flowering before flowering.
During germination, the branches of osmanthus have enough nutrients to supply, usually no need for foliar fertilizer.
How to use foliar fertilizer correctly if necessary?
Nothing is absolute, foliar fertilizer takes effect quickly and is more suitable as a supplement to root fertilization during peak nutrient demand periods.
If it is necessary to use foliar fertilization, it is also possible, but foliar fertilizer cannot be used randomly and precautions should be taken.
1. Pay attention to the timing when using foliar fertilizer during the germination period of osmanthus. It is not recommended to use foliar fertilizer when the tender buds are small, as even a low concentration can cause fertilizer damage.
Foliar fertilizer should be used when osmanthus has 1-2 new leaves unfolded, which is safer.
2. Pay attention to the concentration when using foliar fertilizer. Normally, foliar fertilizer needs to be diluted 1000-2000 times, and a lower concentration is needed during the germination period.
For safety, it is recommended to dilute it 2000-3000 times before use, and the concentration should not be adjusted randomly, as high concentration can easily cause burn to the new buds.
3. Choose the right time to use foliar fertilizer. Generally, foliar fertilizer should be sprayed in the evening, as the evaporation rate is slower, and the sprayed foliar fertilizer can stay on the leaves for a longer time, allowing the leaves to absorb more nutrients.
4. The purpose of using foliar fertilizer during the germination period of osmanthus is mainly to promote the growth of new buds, which require a lot of nitrogen.
Urea is a suitable foliar fertilizer at this time. When using urea, attention should be paid to the quality of the fertilizer. The content of biuret in urea should be lower than one thousandth, otherwise it can easily burn the leaves.
The above sharing of the comprehensive introduction of whether potted osmanthus can be fertilized with foliar fertilizer, hoping to bring some knowledge of green plants to green plant enthusiasts.