Humic Acids from Raw Materials of the Czech Republic

0371209 - BC 2012 RIV US eng M - Část monografie knihy
Madronová, L. - Novák, J. - Kubíček, J. - Antošová, B. - Kozler, J. - Novák, František
Biological activity determination.
Humic Acids from Raw Materials of the Czech Republic. New York: Nova Science Publisher, 2011 - (Madronová, L.), s. 85-103. Chemistry Research and Applications. ISBN 978-1-61668-965-0
Výzkumný záměr: CEZ:AV0Z60660521
Klíčová slova: biological activity * determination * potassium humate samples
Kód oboru RIV: CB - Analytická chemie, separace

The biological activity of potassium humate samples were investigated on high plants (Zea mays). Humate samples were prepared through alkaline extraction of coal, oxyhumolite, lignite, peat, and chemozem, originated from the Czech Republic. The fast method based on the roots length measurement was used. The growth rate was influenced by the stimulative effect of an investigated substance, which was put into the essentials nutrient solution. The length of germinal roots were measured after 48, 72 and 96 hours from seeds insertion in the experimental vessels. The correlation of carboxyl groups and intensity of HS stimulative effect on the stretch growth of higher plants was found in the longer time intervals (r² =0.43). The method of potassium humate foliar application was verified in the case of wheat growing in hydroponics arrangement. The significant effect of humic substances application was established in the case of roots biomass growth in the earliest stagess.
Trvalý link: http://hdl.handle.net/11104/0204779