Plant Soil Environ., 2018, 64(12):626-632 | DOI: 10.17221/655/2018-PSE

Use of biologically active substances in hopsShort Communication

Pavel PROCHÁZKA*,1, Přemysl ŠTRANC2, Kateřina PAZDERŮ1, Jan VOSTŘEL1, Jan ŘEHOŘ1
1 Department of Crop Production, Faculty of Agrobiology, Food, and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic
2 ZEPOR + - Agriculture Consultancy and Forensic Expertise Services, Žatec, Czech Republic

In four-year experiments, hop was treated with 7 biologically active substances in two terms during vegetation: Lignohumate max (a mixture of humic acids and fulvic acids), Lexin (a mixture of humic acids and fulvic acids enriched with auxins), Lexenzym (a mixture of humic acids and fulvic acids enriched with auxins, phytohormones and enzymes precursors), Ascophyllum nodosum seaweed extract, synthetic auxin, humic acids and fulvic acids alone. The chlorophyll content was monitored after the application both in the vine leaves and in the branch leaves. After harvesting of the hops from the individual treatments, the yield of dry hops was determined and the cones were analysed for the content of alpha bitter acids. The results show that the most effective hop treatment was the application of Lexin and Lexenzym. The Lexenzym treatment provided a yield of dry hops of 1.86 t/ha, i.e. 0.47 t/ha higher compared with untreated control. The Lexin treatment provided yield higher by 0.41 t/ha of dry hops compared with the untreated control, while the harvested cones contained the most alpha-bitter acids (4.57%).

Keywords: Humulus lupulus L.; hops production; humic substance; green pigments; quality

Published: December 31, 2018  Show citation

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PROCHÁZKA P, ŠTRANC P, PAZDERŮ K, VOSTŘEL J, ŘEHOŘ J. Use of biologically active substances in hops. Plant Soil Environ.. 2018;64(12):626-632. doi: 10.17221/655/2018-PSE.
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