Tridens (flavus)
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Joel L. Douglas USDA NRCS - Coffeeville/Jamie L. Whitten Plant Materials Center 2533 County Road 65 Coffeeville, Mississippi 38922-2652 (601) 675-2588 (601) 675-2369 (fax) jdouglas@ms.nrcs.usda.gov http://plant-materials.nrcs.usda.gov/mspmc |
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| Family Scientific Name: | Poaceae | ||
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| Scientific Name: | Tridens flavus (L.) A.S. Hitche. | ||
| Common Name: | Purpletop | ||
| Species Code: | TRFL2 | ||
| General Distribution: | Native range extends from New Hampshire to Nebraska, south to Florida and Texas. | ||
| Propagation Goal: | plants | ||
| Propagation Method: | seed | ||
| ProductType: | Propagules (seeds, cuttings, poles, etc.) | ||
| Time To Grow: | 0 | ||
| Propagule Collection: | Collected in Natchez Trace Parkway (actual collection location was not noted - designated collection area was the lower section of the Natchez Trace Parkway, from around Jackson, Mississippi to the terminus in Natchez, Mississippi) by B.B. Billingsley, Jr. in 1991. | ||
| Propagule Processing: |
Seed Processing: Direct combined or stripped with a flail-vacuum harvester and cleaned using an air screen cleaner. Seeds can also be hulled for ease of planting, but this operation was not done at the PMC. Seeds/Kg: 1,025,000. Germination: In 1993=89% and in 1994=69%. Purity: In 1993=96% and in 1994=94%. |
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| Pre-Planting Treatments: | Seed Treatments: Seeds have an absolute requirement for stratification. Reports from the local seed test laboratory showed 0% germination, however, when seeds from the same seed lot were stratified, high germination percentages resulted. A three month stratification period was used, however, periods as short as two weeks appear to be sufficient to overcome dormancy. | ||
| Growing Area Preparation/ Annual Practices for Perennial Crops: |
Propagation Environment: Field. Seed Propagation Method: Direct sown. |
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| Establishment Phase: |
Sowing Date: August to September. The PMC had some success with spring planting hulled seed, but fall planting is much safer due to the dormancy problem discussed earlier. Emergence and Date: Seeds will not germinate until the spring following sowing. Sowing/Planting Technique: Seed can be drilled shallowly in clean tilled fields or broadcast on the surface of mowed areas. Planting rates of 11.2 to 15.7 kilograms PLS per hectare (10 to 14 pounds PLS per acre) are recommended. Establishment Phase: Stands are slow to establish and may take a few years to become fully productive. |
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| Active Growth Phase: | Rapid Growth Phase: Plants begin to elongate to produce seed heads in late summer. | ||
| Harvesting, Storage and Shipping: |
Harvest Date: Late October to early November. Total Time to Harvest: 12 to 13 months. Seed Storage: Normal cool, dry storage. PMC cooler is maintained at 12.7§ C (55§ F) and 45% relative humidity. Storage Duration: Seeds would be classified as having medium longevity (Hartmann and Kester, 1975). Seeds were stored for 1 to 3 years before planting on the Natchez Trace Parkway. |
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| Length of Storage: | <b>Storage Duration: </b> 1-3 years. | ||
| Other Comments: | Yields up to 448 kilogram per hectare (400 pounds per acre) of high quality seed can occur from row planted fields. | ||
Citation:
Grabowski, Janet M.. 2001. Propagation protocol for production of Propagules (seeds, cuttings, poles, etc.) Tridens flavus (L.) A.S. Hitche. plants USDA NRCS - Coffeeville/Jamie L. Whitten Plant Materials Center Coffeeville, Mississippi. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/04/19). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.
