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Grain productivity hybrids of corn depending on the use of complex mineral fertilizers
The results of studying the effect of complex mineral fertilizers on the productivity of corn hybrids of different ripeness groups in the conditions of the Right-Bank Forest-Steppe are presented. The studies were carried out in 2019–2021 in the conditions of the experimental feld of the Scientifc and Production Center of the Bila Tserkva National Agrarian University. The experiment studied 9 early, mid-early and mid-season corn hybrids (FAO 170–350) and 4 levels of fertilizers: no fertilizers, N60P60K60, N60P60K60 + Plantonit Frumentum (1 l/ha), N60P60K60 + Plantonit Grain (1 l/ha). It was found that all the studied hybrids had high parameters of the grain mass from the kernel and the mass of 1000 grains when using N60P60K60 + Plantonit Frumentum. There was no signifcant difference in the elements of the yield structure when using N60P60K60 + Plantonit Frumentum and N60P60K60 + Plantonit Grain. The maximum grain yield was provided by mid-season hybrids Carifols and LG30352 on the variant N60P60K60 + Plantonit Frumentum – 8.21 and 7.84 t/ha. When N60P60K60 + Plantonit Grain was applied, the yield was 8.16 and 7.81 t/ha. The grain yield of the hybrids of the early maturing group was 5.82 t/ha, the medium-early – 6.71 t/ha, and the mid-season – 7.35 t/ha. Among the hybrids of the early-maturing group, the most productive was LG30189 (4.75–6.63 t/ha), in the medium-early group – P8409 (5.29–7.61 t/ha), in the mid-season group – Carifols (6.04–8.21 t/ha). Due to the use of complex mineral fertilizers Plantonit Frumentum and Plantonit Grain, the productivity of the crop increased by an average of 6.0 and 5.4 % compared to the application of only N60P60K60. When N60P60K60 + Plantonit Grain was applied, early-maturing hybrids increased grain yield by 1.76 t/ha, medium-early by 2.11 t/ha, mid-season by 1.96 t/ha compared to the variant without fertilizers. At the same time, the greatest increase yield was observed in medium-early and mid-season hybrids (1.48–2.32 t/ha). The effect of mineral fertilizers on the moisture content of corn grain has not been established, and this indicator depended on the biological characteristics of the studied hybrids.
Key words: corn, grain, hybrid, mineral fertilizers, productivity, foliar feeding.
https://orcid.org/0000-0002-8494-7896Reference:
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