Abstract
The host/parasite system Lolium perenne L./ Tylenchorhynchus dubius (Bütschli, 1873) Filipjev, 1936 was studied in experiments and by simulation, to elucidate the nature and functioning of the relationship between pasture and ectoparasitic nematodes.
The influence of temperature and soil moisture on the system and the incidence of tolerance and resistance in the host were studied in experiments under controlled conditions.
A mathematical simulation model was developed for the host/parasite system; preliminary models for the population dynamics of the nematode and the influence of the nematode on plant growth are presented.
Measurements and simulations indicate that the ratio of nematode numbers to young roots is a main determinant of the effect of the nematodes on plant growth. The role of T.dubius and other ectoparasitic nematodes in the failure of reseeded pastures is discussed.
Original language | English |
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Qualification | Doctor of Philosophy |
Awarding Institution | |
Supervisors/Advisors |
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Award date | 18 Sept 1990 |
Place of Publication | Wageningen |
Publisher | |
Print ISBNs | 9789090035819 |
DOIs | |
Publication status | Published - 18 Sept 1990 |
Keywords
- plant pests
- lolium
- pratylenchus
- heteroderidae
- tylenchidae
- grasslands
- tylenchorhynchus