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Experiences with Colorado beetle

Bacillus thuringiensis

Bacillus thuringiensis 6 D:
A small potato plot (15 m²) was badly affected by the Colorado potato beetle.
On June 22 the first half of the field was sprayed in the morning with Bacillus thuringiensis 6 D from Homeoplant (dosage: 10 ml in 10 liters of water). On June 23 the treatment was repeated on the second half of the field. After 1 day, the small and medium-sized larvae ceased feeding, turning their heads up; the large larvae continued feeding but noticeably more slowly.
The small larvae then died but the medium and large larvae recovered and continued feeding.
A further application of the remedy had no apparent additional effect.

It might be possible to completely prevent infestation by applying the treatment at an earlier stage, before the tubers have formed.

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