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Production yield of sorghum grown for biogas production
 Adamčík, Jiří ; Pulkrábek, Josef (advisor) ; Vladimír, Vladimír (referee)
Low temperature during germination is a major limiting factor affecting growth of sugar sorghum in the Czech Republic. The aim of the study was to determine the ability of stimulated seeds germinate in slightly adverse conditions (less optimal temperatures) and evaluate the impact of biologically active compounds to faster germination of sorghum seeds and next plant growth. Two sorghum seed lots were treated by auxinous preparations Lexin and M Sunagreen. Germination was tested in germination chamber at temperatures 12, 15, 18 and 21 °C in the dark for 14 days. The results confirm stimulation of sugar sorghum seeds and increase of the germination speed at lower temperatures. Top acting biologically active agent (for faster germination) was Lexin. This product has a significant impact on increasing of the seed vigour. In less favorable conditions (12 ° C) application of Lexin increase germination speed of sorghum seeds by a full five days. Shortening of mean germination time was detected after M-Sunagreen application too. 25 cm row spacing on sorghum sugar and 50 cm on the grain sorghum were the best in our experiments. We have found that fertilizer Urea Stabil before sowing at a dose of 80 kg N.ha1 and then the same dose fertilization in stage BBCH 35 is preferred.
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1 Adamčík, Jan
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