| SPECIES | Lupinus argenteus |
| Common name and alpha code | silvery lupine LUAR3; also Argenta lupine 216 |
| General Information | Occurs at the edge of the woods or in open places 216138 |
| TABLE: | SEED |
| Seeds/Lb. | 1,275 to 3,439 138 |
| Germ % | In ref. #88:
GERMINATIVE ENERGY: 40% in 4 days (McDonough) GERMINATIVE CAPACITY: 80% in 28 days (McDonough, 1969); 64% (Swingle, 1939) COMMENTS: No reaction to GA3 (McDonough, 1969) ;50-80% (estimated) 216138 |
| Germ Test Amt | |
| Germ Test Cost | |
| Purity % | |
| Purity Test Amt | |
| Purity Test Cost | |
| Germination
Pretreatment Requirement
|
Fresh seed can be
sown without treatment. Stored seeds can be treated with boiling water and soaked for 12
to 24 hours before sowing. 138, or mechanically scarified 120 Lupinus spp: Pour near-boiling water over seed; cool, drain, and plant seed. 186 In ref. #88: STRATIFICATION: Seeds imbibed in 4 ml distilled water on double layers of filter paper in 9-cm petri dishes (McDonough, 1969) SCARIFICATION: 4-minute submergence in sulfuric acid then wash in running tap water for 30 minutes (McDonough, 1969) LABORATORY GERMINATION: TEMPERATURE: Fluctuating: 22-17°C at 8-16 hours (McDonough, 1969) LIGHT: 8 hours/day at 50 lux illumination at high temperature alternation (McDonough, 1969) |
| Seed Processing Needed e.g. awns | |
| Storage Requirements |
In ref. #88: METHOD OF STORAGE: 2°C in vapor-tight bottles (McDonough, 1969) Cool, dry 138 |
| Storage Length (Years) |
Lupinus spp: seed
will give approximately equal [germination] results whether long-stored or fresh-picked 186 Long periods of time when dried. 138 |
| Maturity Date | July to August 216138 |
| Pollinators Seed Dispersal Mechanism | |
| Breeding: self; Cross; Asexual Reproduction | |
| Disease Problems | |
| Insect Predation | |
| Hand Collection Methods, Problems, and Cost/Lb. | In ref. #88: Collect while seed is in medium to hard dough stage. (Harmond et al., 1961) |
| TABLE: | SEED INCREASE INFO |
| Sow Rate for Seed Increase Plantation, Lb./Acre | |
| 1st Year Yield, Lb./acre, | |
| 2nd Year Yield, Lb./acre | |
| Field Life Span: Years | |
| Production Cost/Lb. | |
| Field Distance Requirements | |
| Sow Date | Fall 138 |
| TABLE: | HABITAT |
| Miscellaneous Increase Info. | |
| Plant Association Groups | |
| Drought Tolerance | |
| Soil: Texture, Chemicals | |
| Soil Depth | |
| Ave. Precip. Needs | |
| Flooding or High Water Tolerance | |
| Soil Stabilization | |
| Palatability and Attractiveness to Animals; Response to Grazing | Toxic and
teratogenic to livestock. Losses can be reduced by keeping hungry animals away from lupine
patches in early growth stage and in late summer when plant is in highly toxic seed stage,
and from dense stands at all times 167 In ref. #88: Poisonous to wildlife and all classes of livestock (James et al., 1980; Kingsbury, 1964) |
| Elevation Range | |
| Competitiveness | |
| Plasticity | |
| Root System: Rhizomes, Stolons, etc. | |
| Shade Tolerance | |
| TABLE: | CONSERVATION SOWING ON N.F. SITES |
| Sow Rate for. Sowing on National Forest Sites, Lb./Acre | |
| Sowing Method and Date | Use inoculant at time of seeding. 138 |
| Miscellaneous |