How long does granular fertilizer last in soil? How long does it take to see results? In fact, this question cannot be answered in a general way, because fertilizer is only a general term, and there are many types of fertilizers, such as urea, ammonium bicarbonate, ammonium chloride, phosphate fertilizer, etc., so different fertilizers have different effects when applied to the soil, and different There are also great differences in the fertilizer efficiency period for different types of fertilizers, and it cannot be generalized.
The duration of granular fertilizers depends on many factors: type of pellets, type of feedstock, biological activity in the soil, soil temperature, and more. Compared with powdered organic fertilizers, granular fertilizers have a longer decomposition period.
There are many friends who think that fast-acting fertilizers are good fertilizers, but it is not. Let’s take a look at the effective time and fertilizer effect period of several common fertilizers for your reference!
Generally speaking, urea takes effect in 7 days, and the fertilizer effect period is 45 days; ammonium bicarbonate takes effect on the same day, and the fertilizer effect period is 15 days; ammonium chloride takes effect in 3 days, and the fertilizer effect period is 25 days, and the fertilizer effect period is 25 days; The period of 90 days; the biological fertilizer takes about 30 days to take effect. The fertilizer effect is not too obvious on crops in the growth cycle, but the fertilizer effect can last for 6 to 8 months.
Pay attention to the use of fertilizers:
As for what to pay attention to? In fact, there are too many. For example, urea should not be watered immediately after use, which is easy to cause loss. Ammonium bicarbonate should not be applied on the soil surface, it is volatile and will cause burning of seedlings; ammonium bicarbonate should not be applied in greenhouses and greenhouses, which may easily lead to crop poisoning; ammonium nitrogen fertilizer should not be mixed with alkaline fertilizer; potassium fertilizer should not be applied in the later stage of crops, etc. .
In addition, fertilizers should not be used in excess for a long time, which will lead to imbalance of soil influence and even increase of heavy metals and toxic substances in soil. Therefore, fertilizers should be used reasonably to ensure that nutrients are balanced and not imbalanced.
Fertilizers have different physiological properties in different growth periods. It is necessary to carry out a reasonable combination of different fertilizers according to different growth periods in order to grow better, and cannot blindly pursue quick results. Sometimes quick-acting fertilizers may cause problems such as crop growth and premature senescence in the later stage, but reduce crop yield and quality, which is not worth the loss.
To sum up, the quality of fertilizer cannot be judged from its effective time. Products like biological fertilizers are slow to take effect. Is it possible that we should put this into the ranks of “bad fertilizers”? This is obviously impossible, so when we choose fertilizers, we must understand that the purpose of applying fertilizers is to improve quality and increase production, and fertilizers that can increase production and ensure quality are good fertilizers.