Coreopsis (pubescens)
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Jill Barbour Germination Specialist USDA FS - National Seed Laboratory 5675 Riggins Mill Rd. Dry Branch, Georgia 31020 478-751-3553 478-751-4135 (fax) jbarbour@fs.fed.us www.nsl.fs.fed.us |
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| Family Scientific Name: | Asteraceae | ||
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| Family Common Name: | Aster | ||
| Scientific Name: | Coreopsis pubescens Ell. | ||
| Common Name: | star tick seed | ||
| Propagation Goal: | seeds | ||
| Propagation Method: | seed | ||
| ProductType: | Propagules (seeds, cuttings, poles, etc.) | ||
| Stock Type: | seed cleaning techniques | ||
| Time To Grow: | 0 | ||
| Propagule Processing: |
Five seedlots were run througth the Westrup Brush Machine once and a sixth seedlot was run three times at speed 11 to separate the seeds from the flowers. Medium stiff brushes and a coarse shell were used. The seed came out the chute end of the machine. One seedlot was not aspirated but sticks were removed with a 9.5/64 inch round hole screen. Three seedlots were aspirated at a vacuum of 0.02 inches of water column to remove light weight trash. Each of the seedlots received a different treatment after aspiration. Larger trash from the first of the three seedlots was removed with a 8.5/64 inch round hole screen, a 5.5/64 x 1/2 inch slotted screen, and a 4.5 x 1/2 inch slotted screen and fine material passed through a soil sieve number 0.0787. The second out of three seedlots was cleaned with an indent cylinder size 24/64 inch holes to remove trash longer than the seeds. The third seedlot, which went through the brush machine 3 times, was cleaned with a 70/1000 inch round hole screen, a 6.5/64 inch round hole screen, and a soil sieve with measurement 0.0394. The fifth seedlot was aspirated 3 times at 0.01 inches of water column to remove light weight trash. A 42/1000 inch slotted screen was then used. The sixth seedlot was aspirated one time at 0.01 inches of water column followed by an 8.5/64 inch round hole screen to remove larger material. |
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Citation:
Barbour, Jill R; Johnson, Gary; Karrfalt, Bob; Kaufmann, Gary. 2007. Propagation protocol for production of Propagules (seeds, cuttings, poles, etc.) Coreopsis pubescens Ell. seeds seed cleaning techniques; USDA FS - National Seed Laboratory Dry Branch, Georgia. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/04/25). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.
