The Reaction of Maize and Sorghum to Fertilization with Granulated Fertilizer Obtained from Digestate
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Institute of Agroecology and Plant Production, Wroclaw University of Environmental and Life Sciences, Grunwaldzki Sq. 24A, 53-363 Wrocław, Poland
Institute of Agricultural Engineering, Wroclaw University of Environmental and Life Sciences, Chełmońskiego St. 37A, 37B, 39, 39A, 41, 51-630 Wrocław, Poland
Submission date: 2023-02-21
Final revision date: 2023-08-11
Acceptance date: 2023-09-08
Online publication date: 2023-11-27
Publication date: 2024-01-22
Corresponding author
Piotr Kuc   

Wrocław University of Environmental and Life Sciences, pl. Grunwaldzki 24 A, 50-363, Wrocław, Poland
Pol. J. Environ. Stud. 2024;33(2):1215-1223
The aim of the conducted observations was to examine the effect of fertiliser produced based on plant digestate and resulting from the process of anaerobic fermentation of a substrate with sorghum (20%), beet (60%), rye (10%) and grass (10%) on the growth and yield of sorghum and corn. A strict, single-factor pot experiment was carried out in 2017–2018 in the Swojec Agricultural Experimental Unit at the University of Life Sciences in Wrocław. Fertilisation with digestate was the tested factor, with a focus on its influence on selected energy plants. Sucrosorgo sorghum and Atletico maize were analysed. During the research, the pots were placed in a vegetation hall. The research proved that the use of digestate-based fertiliser improves the productivity of both sorghum and maize, but only with an additional dose of basic macronutrients. The optimal variant is a fertiliser dose of 20 g enriched with 1.0 NPK. Increasing the dose to 30 g and 1.5 NPK generally did not result in a significant increase in plant height or in fresh and dry weights.
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