Pyrethrum Harvesting

HARVESTING OF PYRETHRUM FLOWERS

Harvesting is done once in 2-3 weeks when the daisies are in full bloom as this is when the concentration of pyrethrin is at its peak. Flowers are carefully picked and hanged in bunches in a warm, airy place to dry. The amount of pyrethrin concentration in the flower is determined by genotype and the environment (altitude, temperature). Farmers will make the most pyrethrin production by picking flowers at the right time. The flowers develop through 8 stages from the bud to the seed stage. Young immature flowers contain low pyrethrins concentration, which increases from the bud stage up to when its disc florets are open, and then decline gradually. The right stage to pick pyrethrum is when the ray florets are horizontal and the disc florets are open.

Flower harvesting is selectively done by hand and flowers dried and delivered to the factory for processing. The best picking method is by holding the flower between the first and second finger and then pulling the flower head with the thumb.

 

Pyrethrum is dried in natural sunlight on a raised bed rack or by solar drying to 13% moisture content before transporting to the flower collection centers.

Harvesting is done once in 2-3 weeks when the daisies are in full bloom as this is when the concentration of pyrethrin is at its peak. Flowers are carefully picked and hanged in bunches in a warm, airy place to dry. The amount of pyrethrin concentration in the flower is determined by genotype and the environment (altitude, temperature). Farmers will make the most pyrethrin production by picking flowers at the right time. The flowers develop through 8 stages from the bud to the seed stage. Young immature flowers contain low pyrethrins concentration, which increases from the bud stage up to when its disc florets are open, and then decline gradually. The right stage to pick pyrethrum is when the ray florets are horizontal and the disc florets are open.

Flower harvesting is selectively done by hand and flowers dried and delivered to the factory for processing. The best picking method is by holding the flower between the first and second finger and then pulling the flower head with the thumb. Pyrethrum is dried in natural sunlight on a raised bed rack or by solar drying to 13% moisture content before transporting to the flower collection centers.

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