Effects of selected pesticides and organic substrates on long-term respiration of soil microbial community

ČERNOHLÁVKOVÁ, Jitka a Jakub HOFMAN. Effects of selected pesticides and organic substrates on long-term respiration of soil microbial community. In Abstracts of International Conference on Ecotoxicology 2006 - Trends and Perspectives. 2006.

Základní údaje

• Originální název: Effects of selected pesticides and organic substrates on long-term respiration of soil microbial community
• Název česky: Efekty vybraných pesticidů na dlouhodobou respiraci půdních mikroorganismů
• Autoři: ČERNOHLÁVKOVÁ, Jitka (203 Česká republika) a Jakub HOFMAN (203 Česká republika, garant).
• Vydání: Abstracts of International Conference on Ecotoxicology 2006 - Trends and Perspectives, 2006.

Další údaje

• Originální jazyk: angličtina
• Typ výsledku: Konferenční abstrakt
• Obor: 10511 Environmental sciences
• Stát vydavatele: Polsko
• Utajení: není předmětem státního či obchodního tajemství
• Kód RIV: RIV/00216224:14310/06:00016321
• Organizační jednotka: Přírodovědecká fakulta
• Klíčová slova anglicky: soil; microorganisms; respiration; pesticides
• Štítky: microorganisms, pesticides, respiration, soil
• Příznaky: Mezinárodní význam

Anotace

Using of pesticides and plant protection product could cause negative changes in soil microbial communities, despite it is not the primary intent if its application. Soil respiration is an important indicator of microbial metabolic activity. A characteristic respiration curve is obtained from long-term monitoring of CO2 production from soil. Effect of pollutants on activity and growth of soil microorganisms could be determined from parameters and profile of that curve. The aim of our study was to investigate the effect of selected fungicides on soil respiration and organic C mineralization. In the laboratory experiment sandy loam arable soil was spiked by fungicides and cultivated at 20C. Two types of fungicides – dinitrophenol fungicide dinocap and dithiocarbamate mancozeb – were applied to the soil in recommended and 10 times higher doses. Respiration activity was measured as CO2 evolution using the OxiTop system. The influence on substrate induced respiration (SIR) after addition of glucose as available organic in the first 48 hour were compared with 5 days long term respiration kinetic of soil samples. Mineralization of organic carbon was assessed as evolution of CO2 after addition of lucerne meal to the soil sample during 5 days. Respiration kinetic was assessed and parameters of respiration curves were evaluated and compared between spiked and control samples.

Anotace česky

Using of pesticides and plant protection product could cause negative changes in soil microbial communities, despite it is not the primary intent if its application. Soil respiration is an important indicator of microbial metabolic activity. A characteristic respiration curve is obtained from long-term monitoring of CO2 production from soil. Effect of pollutants on activity and growth of soil microorganisms could be determined from parameters and profile of that curve. The aim of our study was to investigate the effect of selected fungicides on soil respiration and organic C mineralization. In the laboratory experiment sandy loam arable soil was spiked by fungicides and cultivated at 20C. Two types of fungicides – dinitrophenol fungicide dinocap and dithiocarbamate mancozeb – were applied to the soil in recommended and 10 times higher doses. Respiration activity was measured as CO2 evolution using the OxiTop system. The influence on substrate induced respiration (SIR) after addition of glucose as available organic in the first 48 hour were compared with 5 days long term respiration kinetic of soil samples. Mineralization of organic carbon was assessed as evolution of CO2 after addition of lucerne meal to the soil sample during 5 days. Respiration kinetic was assessed and parameters of respiration curves were evaluated and compared between spiked and control samples.

Návaznosti

• GP525/04/P159, projekt VaV: Název: Vliv nově rozpoznávaných prioritních perzistentních organických polutantů (POPs) na organismy v půdním ekosystému

Investor: Grantová agentura ČR, Vliv nově rozpoznávaných prioritních perzistentních organických polutantů (POPs) na organismy v půdním ekosystému

• MSM0021622412, záměr: Název: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Akronym: INCHEMBIOL)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální , regionální a lokální úrovni