First Record of Nematode Longidorus attenuatus on Soybean in Poland

Soybean (Glycine max) is one of the most important agricultural crops worldwide. Due to the economic value of this crop, soybean is being introduced to areas where it has not been traditionally cultivated. The plant-parasitic nematode Longidorus attenuatus Hooper, 1961 is known to parasitize many plant species and it is associated with docking disorder of sugarbeet. In September 2014, 10 soil samples were collected to a depth of 10 to 45 cm from the rhizosphere of the soybean variety Lissabon at a field in Winna Gora Village, Wielkopolska region, Poland. To demonstrate that soybean is a host for L. attenuatus, seven replicate plastic boxes were filled with 800 cm3 of soil. The soil used in the experiment was taken from a place with no L. attenuatus and additionally sterilized using a Systec DX-90 2D autoclave. In each box, two soybean Lissabon seeds were planted. Although no obvious symptoms were observed on the plants, at the end of the experiment those with nematodes had visibly more yellowing leaves compared with plants from the control.