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Then, what is the appropriate amount of fertilization when using a 10-inch dropper to cultivate plants? Suppose that the growth matrix of planted plants contains basal fertilizer, and if no fertilizer is lost, 1.5 to 2.0 g of nitrogen fertilizer should be added to the matrix. To ensure that the fertilizer in the hanging pot is sufficient in 12 weeks, the nutrient elements are balanced. (When fertilizing and watering plants, fertilizer loss occurs under normal conditions.) This corresponds to the addition of 7-10 quarts of fertilizer at a concentration of 200 mg/LN.
If fertilizer losses are counted in, more fertilizer needs to be applied. Michigan State University researchers found that the loss of 25% of fertilizer will lead to a 50% reduction in the absorption of fertilizers by plants. In other words, when 25% of the fertilizer is lost, it is necessary to increase the fertilization concentration or increase the number of fertilization to ensure that the amount of nutrients in the substrate at this time is the same as in the case of no fertilizer loss.
Studies have shown that if the hanging plant grows and blooms normally outdoors for 20 weeks, at least 5-6 g of nitrogen fertilizer is required in the case of a balanced matrix nutrient. In the case of fertilizer loss, this is equivalent to applying 2 quarts of fertilizer at 300 mg/LN concentration every two weeks. Assume that 1 teaspoon of 20 to 20 to 20 fertilizers (commonly used fertilizers) weighs about 6 g, and 1 teaspoon of fertilizer is dissolved in 1 gallon of water to give a nitrogen concentration of about 300 mg/L. Since most of the matrix in the 10-inch pots when watered is about 64f1.oz per watering, fertilizing once every two weeks is theoretically sufficient.
We can use the above fertilization method to grow hanging potted plant products for sale, such as geranium, ivy, fuchsia, impatiens, New Guinea Impatiens, and four-season begonia.
In general, some plants have a higher demand for nutrients such as geranium. Some plants have lower demand for nutrients, such as New Guinea Impatiens. The plant species selected for the test did not require any higher concentration of fertilizer for any one plant. On the contrary, for those plants with higher demand of nutrient elements (plants listed above), due to their higher demand for nutrient elements, Therefore, it can tolerate the high salinity growth environment caused by high-concentration fertilization.
Understanding slow release fertilizer
Another form of providing nutrients to plants is the application of slow-release fertilizers. As its name suggests, slow-release fertilizers do not come into effect immediately, but instead provide all the nutrients to the plants at one time, and slowly provide nutrients to the plants over time. The manufacture of slow-release fertilizers requires a lot of techniques, among which the most exquisite is to make the fertilizer containing nutrients into particles coated with resin.
Unlike water-soluble fertilisers, which can be accurately calculated for different fertilization concentrations, the release of slow-release fertilizer (enveloping granular fertilizer) is a slow process that cannot be accurately calculated, and it depends on the soil environmental conditions. When the soil is moist and the coated particles absorb water, the temperature of the soil becomes the only major factor in the sustained release of nutrients by slow-release fertilizers.
According to the different slow-release fertilizer products, the soil temperature that can achieve the desired release effect can be from 68 to 80F. For example, the ideal soil temperature for resin-coated fertilizer granules is 70F. For slow-release fertilizers with a sustained release time of 90 days, if the soil temperature is kept at 70F, the release period of 90% of the nitrogen in the fertilizer will exceed 90 days. When the actual soil temperature is greater than the ideal soil temperature, the higher the actual temperature is, the faster the release rate of slow-release fertilizer is, and the shorter the release duration is. On the contrary, when the actual soil temperature is lower than the ideal soil temperature, the lower the actual temperature, the slower the slow release rate of slow-release fertilizer and the longer the release time.
How to use the consumer?
It is obviously unrealistic to want all consumers to become fertilizing irrigation experts. If you need to introduce slow-release fertilizers to consumers, the application of slow-release fertilizers should be equivalent to the effect of water-soluble fertilizers. That is, 1.5 to 2g of nitrogen fertilizer is applied during the production period (about 3 months), and 5 to 6g of nitrogen fertilizer is applied after the production period (3 to 4 months).
There are two ways to apply slow-release fertilizers. The first is to add slow-release fertilizer to the substrate before planting. For a 10-inch potted plant with a planting period of 7 to 8 months, if the above calculation method is used, 6-8 g of nitrogen fertilizer should be added.
The fertilizer instructions should be read carefully and the amount of fertilizer applied should not exceed the recommended value. Understanding the nitrogen content of slow-release fertilizers and the 1 cubic yards of matrix can be applied to the number of pendants in order to calculate the required amount of nitrogen. For example, suppose that the nitrogen content of the slow-release fertilizer applied is 17%. At the same time, 1 cubic yards of the matrix can be distributed into 160 hanging pots. To make the amount of nitrogen in each 10 inch washbasin to be 7g, you need Add 14.5 pounds of slow release fertilizer to the 1 cubic yard matrix. If you use a slow-release fertilizer with a nitrogen content of 13%, the mix ratio of the matrix and slow-release fertilizer needs to be increased. You need to add 19 pounds of slow-release fertilizer to a 1-yard cube. (See Table 1.) If the release period of the slow-release fertilizer is less than seven, the ratio of matrix and slow-release fertilizer in the hanging tub should be reduced accordingly. If the release period is less than 4 months, there is little benefit to using slow-release fertilizers for consumers.
When using higher concentrations of fertilizers, the biggest problem is the potential threat of high salinity stress, especially for plants that are sensitive to salt. At present, most greenhouses do not grow only one species of plant, but plant several different plants at the same time. Therefore, fertilizer loss plays a role in reducing the amount of high-level fertilization. If you are using a higher concentration of fertilizer, you need to ensure that the amount of fertilizer loss in the hanging basin is large enough to relieve the damage caused by high salinity to the plant. In the production process, reducing the proportion of fertilizers in the substrate is also a good way to reduce the salt stress. However, the problem to be considered is that the amount of fertilizer may not be sufficient to provide conditions for normal plant growth in the summer. For any one of the application schemes, when slow-release fertilizers are used, the soil conditions should be checked to determine whether or not fertilizer loss occurs during the production of the potted plants based on the data information obtained, such as fertilization.
The second method of applying slow-release fertilizer is to top-dress fertilizers in the wholesale and retail sectors. The advantage of this method is that it does not affect the nutrient management during plant production, and short-term slow-release fertilizers can be used. The disadvantage is that it is not easy to grasp the best time for top-dressing the hanging plants during the busy season, and the coated fertilizer particles may damage the stems of the plants.
During the summer season, if the effect of the slow-release fertilizer applied is the same as that of the water-soluble fertilizer, an additional 5 to 6 g of nitrogen fertilizer is required.
During the summer time, if the effect of the slow-release fertilizer applied is the same as that of the water-soluble fertilizer, an additional 5 to 6 g of nitrogen fertilizer is required, and 1 tablespoon slow-release fertilizer weighs 18 g. If the slow-release fertilizer has a nitrogen content of 17%, 18 g Slow-release fertilizer can provide 3g nitrogen fertilizer for plants (two tablespoons can provide 6g nitrogen fertilizer); if slow-release fertilizer contains 13% nitrogen, one tablespoon slow-release fertilizer can provide 2.3g nitrogen fertilizer for plants (two tablespoons can Provide 4.6g nitrogen fertilizer).
The rational application of slow-release fertilizers will make growers more and more aware of its benefits. In the next issue, we will analyze the different requirements for nutrient elements for different potted plants.
Reasonable fertilization method for hanging pot plants
Fertilization is another common problem that large potted plants need to pay attention to in addition to water management during summer. Most consumers simply do not fertilize or the amount of fertilizer applied does not meet the normal growth of plants. This article will give professional guidance on how to spread fertilizer on a 10-inch basin. This can be used as a reference point for fertilizing the larger basins or baskets.