What fertilizers to use? Part 3


Who would say that in the third sequel of the series on fertilizers we are nearing the end, he would be wrong. Fertilizers as such are such a comprehensive and constantly evolving concept that with each passing month comes new information that is not only important for growers, but in some cases also indispensable. 

In previous works, we talked about the two most common types of fertilizers and their secondary division - organic and mineral fertilizers. So we are left with the last of this basic group, namely organo-mineral fertilizers. 

The term organo-mineral fertilizer includes two other product groups, with different producers and manufacturers either using them simultaneously or following only one path. 

The first and most common type of organo-mineral fertilizers is the combination of both bases into one bottle. The attentive reader certainly knows that organic fertilizers cannot be used in growing in hydroponic / aeroponic systems and drip irrigation, which draws water from a pre-mixed tank with nutrient solution. 

In this case, the mineral base acts as a preservative for the organic base - decomposition, if we want fermentation or precipitation, the fertilizer is partially extended and it is possible to use these fertilizers for all cultivation methods. 

The second possibility that can be encountered when buying fertilizers is that the producer has the organic and mineral parts separately. Again, I will return to the previous parts, where we talked about the different absorption of organic and mineral fertilizers. If the fertilizer is organic, it is absorbed directly by the plant. In our domestic conditions, when the pH of tap water is in the range of pH values 6-8, this aspect is absolutely ideal. So the plant takes almost everything from the nutrient solution. This can be said plus or minus also about groundwater. The deviation may be larger, but in the case of organic fertilizers it will not be limiting for us. 

For this reason, the vast majority of organo-mineral fertilizers have a purely organic root stimulator in their product line, so that the growth of the root mass is as large as possible and, most importantly, as fast as possible. A plant with a developed root system is logically capable of far greater absorption of various micro and macro elements, which would strengthen it in further development. 

However, these organic root stimulators are always supplemented with a basic growth fertilizer, which, on the contrary, is mineral-based, thus preserving the organic base in a certain way, and thus the organic root stimulator can also be used in hydroponic systems.

However, there is something important about changing the nutrient solution in the tank. Many growers say that even though they didn't change their organo-mineral water for 14 days or a month, everything was fine. It's not true. These growers have lost an important proportion of the organic component, and even if they do not lose it or are satisfied with their harvest, they could have been far more satisfied. That's why I advise you - when using organo-mineral fertilizers, change the nutrient solution every 5 days, at most every week, because only then will you be able to test how great a harvest can be with this type of fertilizer.

The power of mineral fertilizers and the content of their elements in combination with easily absorbed micro-elements, amino acids, beneficial bacteria and mycelium will make your harvest something incredible. If you buy fertilizers that are not cheap at all, you want to get everything out of them and ensure that the plants can absorb and transpose it, and thus improve the course of photosynthesis. And that's what's really going on in our fertilizer series. 


As for the structure of these fertilizers, they can only be purchased in liquid form. Of course, everyone is offered the opportunity to mix crystalline mineral fertilizer and, for example, granulated horse manure, but this is a completely individual choice. After all, we are mainly talking about fertilizers that can be bought on the shelves of grow shops. 

In any case, I think that a supplement in the form of organic nutrients and supplements when using the mineral line at least once in a while or, for example, the day before the tank change, will benefit your plants immensely!

In conclusion, I would like to make a challenge for all growers who read this magazine!

It's been about a year since I saw a video where different tests were performed with different types of fertilizers and where they pointed out differences. In this video, a test was performed, where all three basic types of fertilizers were represented - organic, mineral, organo-mineral. 

In the first test, when organic fertilizers were used, they put the recommended dose of fertilizer for 1 liter of water into only 2 dcl of water. After 10 days, a precipitate formed on the surface and the solution smelled.

In the second test, when mineral fertilizers were used, the amount intended for 1 liter of water in 2 dcl of water was used again, the solution was still the same color and no change was seen. 

However, in the third test, when the recommended dosage for the same volume was used again, the organic part settled at the bottom like sediment and the mineral part was above it and was clear. 

Unfortunately, I have not verified it myself, so who is interested in participating in our small research, please send us a photo, preferably with a description, to the email jindrich@casopisroots.cz or to our Facebook page Roots Magazine. We will be very happy, growers themselves and fist well for the next part! 

And now such a little interesting thing - I asked myself the question, what is the pH of seawater. My aunt Wikipedia provided me with information that I was quite nervous about, thanks to rising CO2 into the atmosphere there is a sharp acidification of sea water. According to the available information, this change, which was observed between 1751 and 1996, is up to 35 %, while the water from alkaline pH 8 is close to neutral, ie pH 7. The time period of 250 years is absolutely minimal compared to the length of existence of our planet , but the threat to life in the oceans is alarming…

Photo: istock.com