Fertilizers for feeding flowers and plants are quite a lot. They are available in liquid form and in the form of powders. And in the instructions, usually, it is indicated how much fertilizer should be taken for a certain volume of water. But only the volumes of water for irrigation, the capacity of the leks and bottles are all different. For example, I water plants from 1.5 liter plastic bottles, my friend from five liter and two liter - it is more convenient for her. It is easier to measure liquid fertilizers and calculate them for the required amount of water, but with powdered ones (usually it is fine crystalline powder), it is more difficult. The fact is that not everyone has electronic scales with an accuracy of 1 g. The concept of "tablespoon with a top" is also very subjective. And overwitting with fertilizers, pouring "by eye," is very dangerous for plant health.
So I'll try to tell you how I calculate fertilizer doses for my flowers.
My most popular fertilizer "Fertica Lux" is a pink fine crystalline powder, quite hygroscopic. Sold in bags weighing 20 g. According to the manufacturer, this is one tablespoon. I clarify if you pour the contents of the package into a tablespoon - there will be a tablespoon with a slide.
20 g of fertilizer (1 bag) Fertica Lux are designed for 10 liters of water. I will not drink so many flowers at a time, and not everyone needs to be fed with this particular fertilizer, so I dispose of 1.5 liters of solution.
First, I pour all the fertilizer into a measuring cup to approximately find out its volume. It is about 22 ml.
For more accurate measurement of fertilizers, I have a 20ml syringe that has a front wall with a tip cut off.
I pour the fertilizer into the syringe, quite tightly, I have to press it slightly with a stick, but without effort. The syringe capacity is just the required 22 ml.
I carry out a simple calculation: 22 ml of fertilizer are designed for 1 liter of water, respectively, 3.3 ml of fertilizer is needed for 1.5 liters of water. But, I take strictly 3 ml - it is better not to go through than to go through.
now I pour the resulting handful of fertilizer into a teaspoon (it turned out to be incomplete and without a slide), which I will use exclusively for chemicals. You can use any measuring spoon from drugs. The more accurate the volume of the spoon, the better.In this manner, any other powdered or crystalline fertilizer can be calculated for any volume of water. The main thing to remember is that the solution with fertilizer should stand a little (about 1 hour) for the crystals to completely dissolve, it is better to shake periodically. Well, the most elementary rules for fertilizing plants: you cannot water with a fertilizer solution on dry land, you cannot feed sick and weakened plants, as well as those at rest. Doses of top dressing in universal fertilizers are usually averaged, for some plants you need to take a lower concentration of fertilizer (half or a quarter), so carefully read the recommendations for plant care. This primarily applies to bromeliads, ferns, orchids and some other flowers.