Naslov
Effect of soil tillage practices on microbial communities' dynamic

Autori
Redžepović, Sulejman ; , Mrkonjić Fuka, Mirna ; Blažinkov, Mihaela ; Jug, Danijel ; Radl, Viviane ; Schloter, Michael

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
4th Croatian Congress of Microbiology with International Participation, Programme and Abstracts / Maja Abram, Andreja Ambriović ristov, Krešo Bendelja, Dubravka Hršak, Blaženka Kos, Lidija Kozačinski, Stjepan Pepeljnjak, Mario Sviben, Darinka Vučković - Zagreb : Hrvatsko mikrobiološko društvo, 2008, 88-88

ISBN
978-953-96567-7-3

Skup
4th Croatian Congress of Microbiology with International Participation

Mjesto i datum
Zadar, Hrvatska, 24.09.2008. - 27.09.2008

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
soil microbial communities ; tillage system ; no-till ; soybean ; PCR-DGGE ; Real-Time PCR

Sažetak
Microorganisms in soil represent small but very active part of soil organic matter and are the driving force of nutrient supply in soils. Several studies have demonstrated that intensive tillage has notable effects on the microbial communities’ properties, causing decreases in biodiversity and in microbial biomass. Stimulation and reduction of one part of the microbial populations may induce loss of numerous important soils functions, e.g. mineralization of soil organic compounds or reduction of N20 to greenhouse neutral N2. Therefore, the aim of our study was to investigate the dynamic of microbial communities in soil planted with soybean under different tillage systems. Moreover, abundance of the nitrous- oxide reductase gene (nosZ) as an indicator of soil quality was studied. The research was established at chernozem soil of Northern Baranja region in Republic Croatia as completely randomized block design of four replicate plots for each tillage system in three years experiment. The soil was managed as followed: CT- conventional tillage (moldboard ploughing at 25-30 cm depth), DH- multiple disks harrowing (10-15 cm depth), and NT- no- tillage system. Soil samples were collected from plots in spring, summer and autumn in year 2002, 2003 and 2004. The abundance and diversity of soil microbial communities was investigated by isolating and culturing the microbes on selective media and by culture independent methods. Results of our investigation suggest that no-tillage have positive effect on communities’ structure and function and detailed results will be presented.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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