Naslov
Nematode communitites structure in different agricultural crops

Autori
Brmež, Mirjana ; Ivezić, Marija ; Raspudić, Emilija

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

Izvornik
Prvi kongres hrvatskih znanstvenika iz domovine i inozemstva Zbornik sažetaka postera znanstvenih novaka izlaganih u inozemstvu 2002., 2003. i 2004. / Kniewald, Zlatko - Zagreb : Akademija tehničkih znanosti Hrvatske (HATZ), 2004, 397-397

Skup
Prvi kongres hrvatskih znanstvenika iz domovine i inozemstva

Mjesto i datum
Vukovar, Hrvatska; Zagreb, Hrvatska, 15.11.2004. - 19.11.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
structure of nematode comunities ; different agriculrural crops

Sažetak
Nematodes were used as bioindicators of agroecosystem conditions, due to their characteristics and possibilities of classification on different criteria. The aim of the study was to see how differnces between crops and tillage treatments can influence nematode communities in nine types of agroecosystems: I. winter wheat in crop rotation - standard tillage ; II.winter wheat in crop rotation - reduced tillage ; III. potato - chemical plant protection ; IV. potato - integrated plant protection ; V. alfalfa ; VI. grassland ; VII. poplar forest ; VIII. corn in monoculture ; IX. sugar beat. Sampling was done in 1997 and 1998 year, in spring and autumn period, on the depth of 15-20 cm. Nematode communities were analyzed to genus level. The parametars measured were total number of nematodes, number of genera trophic structure, Maturity index (MI), Plant parasitic index (PPI) and PPI/MI. Total number of nematodes and number of genera were highest in treatments with low human impact (2843 nematodes in alfalfa treatment, and 30 genera in poplar treatment), and lowest in row crops (216 nematodes and 12 genera in sugar beat). Analyze of nematode trophic structure showed greatest abundance of bacterial feeders and phytoparasitic nematodes in all treatments, and lowest abundance of omnivorous nematodes and predators. The greatest abundance of predators was determined in poplar forest. Positive correlation between % humus and total number of nematodes was determined and negative correlation between amount of K20 and number of genera. Statistically very significant differences occurred between treatments in analyzing MI, PPI and PPI/MI. In generally, the most disturbed nematode communities were in row crops (sugar beat, corn in monoculture and potato with chemical and integrated protection) ; the less disturbed in poplar forest, grassland and alfalfa ; and intermediate group was wheat with reduced and standard tillage. These results show possibilities of using nematodes as bioindicators of process in soil ecosystems

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA