Establishment of Eastern Gamagrass from Seed and Vegetative Propagation

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Abstract
Methods of determining seed quality of eastern gamagrass were compared. Pure seed determinations were efficiently and rapidly obtained by air separation at an air value setting of 70[degree] with a South Dakota seed blower. Pure seed fractions separated in this manner contained 5 to 27% empty seed units. Seeds separated by visual means contained 32 to 48% empty seed units. The germination potential of air-blown seed was between 72 and 95%, Prechilling seeds on moist substrate for 6 weeks at 5 to 10[degree]C significantly increased germination. A 6 to 8 week treatment was sufficient to promote germination with 60 to 80% of all live seed. Natural prechilling in moist soil may reduce the risks of stand failures. Fall seedings in either Oct. or Nov. were more desirable than spring seedings. Difficulties encountered in establishing stands are in part due to the inability to separate true seeds from nonviable inert material.

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