OPTIMISATION OF THE CORN PRE-SOWING FERTILISATION SYSTEM THROUGH THE USE OF LIQUID COMPLEX FERTILISERS

Abstract

Optimisation of the pre-sowing fertilisation system for corn is an important component of an efficient agronomic process that directly affects the yield and quality of products. One of the most promising points in this area is the use of liquid complex fertilisers (LCF), which provide plants with available nutrients at the initial stages of their growth and development. Liquid fertilisers have an advantage over solid fertilisers because they are absorbed by plants faster and ensure a more even distribution of nutrients in the soil. However, to achieve maximum results, it is necessary to optimise their application rates depending on specific soil conditions and crop needs. In this regard, the study of the effectiveness of liquid complex fertilisers in the pre-sowing fertilisation system for corn is becoming relevant to increase agricultural productivity.   The problem with phosphorus nutrition of plants is that phosphorus in the soil is often in forms inaccessible to plants, which limits its absorption. The research was conducted on sod-podzolic sandy loam soils of Western Polissya in Ukraine in the period from 2021 to 2024 years. The tests included the use of different rates of liquid fertiliser, granular fertilisers, and their combined use during sowing. The results showed that the use of liquid complex fertilisers in the region can be effective in providing plants with available nutrients in the early stages of development. It was found that the optimal doses of liquid complex fertilisers (25–40 l/ha) in combination with granular fertiliser provide the best results in terms of yield and grain quality. The application of high doses of LCF can be inefficient and also affects the quality of grain germination. The article confirms the importance of the right combination of fertiliser types to achieve high yields and increase phosphorus use efficiency.