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Influence of temperature and soil moisture on the relation between Tylenchorhynchus dubius and Lolium perenne

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Abstract

The relation between the ectoparasitic nematodeTylenchorhynchus dubius and the growth and production ofLolium perenne during the first month after sowing, was studied in pot experiments at several temperatures, and moisture levels.

The nematode reduced the growth of the grass, mainly as a result of activity during the first weeks after seeding. The percentage decrease of dry matter yield was smaller when temperature was more favourable for plant growth. Decreased moisture content of the soil enhanced the effect of nematodes at 10°C.

Samenvatting

De relatie tussen de ectoparasitaire nematodeTylenchorhynchus dubius en de groei en produktie vanLolium perenne gedurende de eerste maand na inzaai werd bestudeerd in potproeven bij verschillende temperaturen en vochtgehaltes van de grond.

De nematode veroorzaakte groeireductie die vooral een gevolg was van nematoden-activiteit in de eerste weken na inzaai. Het procentuele effect op de droge-stofopbrengst was kleiner naarmate de temperatuur dichter bij de optimumtemperatuur voor de groei van de plant lag. Bij 10°C versterkte een lager vochtgehalte van de grond het effect van de nematoden.

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Den Toom, A.L. Influence of temperature and soil moisture on the relation between Tylenchorhynchus dubius and Lolium perenne. Netherlands Journal of Plant Pathology 94, 33–44 (1988). https://doi.org/10.1007/BF01999806

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