HORIZONTAL MIGRATION OF THE TULIP RACE OF STEM NEMATODE DITYLENCHUS DIPSACI (KUEHN) FROM ARTIFICIALLY INFECTED TULIP BULBS PLANTED ON A SANDY AND A HEAVY CLAY SOIL

In field experiments on sandy and heavy clay soils, tulip bulbs were planted on the circumference of circles with different radii and a bulb artificially infected with nematodes was planted in the centre of each circle.
After a certain period, infected plants were found up to a distance of 25 cm from the centre on sandy soil and 30 cm on clay soil.
After harvesting, the percentage of infected bulbs in the material grown on the circumferences was determined.
In an area around the artificially infected bulb, the number of nematodes in the clay soil was twice that in the sandy soil.

I International Symposium on Flowerbulbs

W.A. Windrich

https://doi.org/10.17660/ActaHortic.1971.23.41