engleski

Occurrence of soil and plant nematodes in soybean under cereal rotation

Nematodes are widely distributed in soil and directly under environmental and anthropogenic influences. The objectives of this study were to determine the population fluctuation of five trophic groups for two vegetation periods (2005 and 2006) and to observe the differences between the same trophic groups compared by month between the years. Soil samples were taken twice in soybean vegetative growth stage and once in reproductive growth stage on 7 cultivars. Total of 39 nematode genus were identified. The most dominant genus in trophic groups were: Pratylenchus, Aphelenchoides, Rhabditis, Dorylaimus and Mononchus.The population fluctuation differed for all trophic groups depending on the month and the year. Significant differences between the years were found among the same trophic groups depending on the month while all groups except plant parasites significantly differed in October. The significant difference between the years of total populatuin of nematodes occured in June and October. Overall, plant parasites increased population in both years indicating soybean as good host plant while the environmental and human factor probably was the most important influencing factor for the other trophic groups.

nematode structure ; trophic group ; plant parsites ; soybean

Rad je prezentiran na skupu VII. Alps-Adria Scientific Workshop, Stara Lesna, Slovačka, 2008.