Abstract
The article is a dedicated analysis of the production and use of mineral fertilizers globally, focusing on the agriculture of Kazakhstan. From 1950 to 2020, the fertilizer use ranged between 3.6–29.0 kg of NPK per hectare in arable agricultural land of Kazakhstan. The maximum benefit of fertilizers happened in 1986 in Kazakhstan, with 1,039 t of mineral fertilizers (active substances) applied at an area of 47% of the total arable land, while in 1965, the fertilized area was only 6.6% of the entire sown field. In Kazakhstan, the annual recommended need for mineral fertilizers is one million tons (active ingredient). The paper also discussed the influence of the long-term application of fertilizers on the leading indicators of soil fertility and crop productivity. Employing regression analysis also explored a high degree of probability of a positive relationship among the four viable factors, i.e., fertilizer use intensity, agrochemical indicators of the soil, crop plants yields, and their quality.
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