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The effect of insecticidal seed treatment on germination and emergence of seedlings of swede, turnip and winter turnip rape

Tiittanen, K.; Varis, A.L.isa

Valton Maatalouskoetoiminnan Julkaisuja helsingfors 182: 1-11

1960

Accession: 014239731

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Summary
Germination tests were made with the seeds of swede, turnip and winter turnip rape treated with aldrin, dieldrin, heptachlor, lindane and parathion. Paraffin oil was used as sticker. The effect of storage on the treated seeds was also studied and observations were made on the emergence of seedlings. In the germination tests all the insecticides mentioned above retarded the germination of each trial plant and in most cases increased the number of sterile seeds and the amount of deformed seedlings. The phytotoxic effect was strongest in swedes and slightest in turnip rape. The thickness of the crust on the seed surface did not affect the final amount of germinated seeds. In pot and field trials the differences in the emergence of seedlings were, however, almost entirely equalized after three weeks. Only the harmful effect of treatment with heptachlor and parathion was lasting. The storage of treated seeds up to 35 weeks did not increase the injurious effect in swedes. In turnip and turnip rape the germination deteriorated slightly during the storage.

References

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