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Old 09-13-2007, 09:50 PM   #1
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Johnsongrass

Johnsongrass Basics

Grows LikeGraminoid
DurationPerennial
U.S. NativeIntroduced to U.S.
PLANTS Invasive StatusKY, N'EAST, NE&GP, SEEPPC, STATE, SWSS, WSWS
National Wetland Indicator StatusFACU-, FAC

Johnsongrass Morphology and Physiology

Active Growth PeriodSummer and Fall
After Harvest Regrowth RateRapid
AllelopathYes
BloatNone
C:N RatioMedium
Coppice PotentialNo
Fall ConspicuousNo
Flower ColorYellow
Foliage ColorGreen
Foliage Porosity SummerDense
Foliage Porosity WinterModerate
Foliage TextureCoarse
Fruit Seed ColorBrown
Fruit Seed ConspicuousYes
Growth FormRhizomatous
Growth RateRapid
Height Mature feet3.5
Leaf RetentionNo
LifespanLong
Low Growing GrassNo
Resprout AbilityNo
ErectErect
ToxicitySlight

Johnsongrass Growing Requirements

Adapted to Coarse Textured SoilsYes
Adapted to Fine Textured SoilsYes
Adapted to Medium Textured SoilsYes
Anaerobic ToleranceLow
CaCO3 ToleranceLow
Cold Stratification RequiredNo
Drought ToleranceLow
Frost Free Days (Minimum)165
pH Minimum5
pH Maximum7
Planting Density per Acre (Minimum)4800
Planting Density per Acre (Maximum)11000
Precipitation Minimum32
Precipitation Maximum60
Root Depth (Minimum inches)10
Salinity ToleranceLow
Shade ToleranceIntolerant
Shade ToleranceIntolerant
Minimum Temperature (F)-13

Johnsongrass Reproduction

Bloom PeriodLate Summer
Commercial AvailabilityRoutinely Available
Fruit Seed AbundanceHigh
Fruit Seed Period BeginsSummer
Fruit Seed Period EndsFall
Fruit Seed PersistancesNo
Propagated by Bare RootNo
Propagated by BulbsNo
Propagated by ContainerNo
Propagated by CormsNo
Propagated by CuttingsNo
Propagated by SeedYes
Propagated by SodNo
Propagated by SprigsYes
Propagated by TubersNo
Seed per Pound119280
Seed Spread RateRapid
Seedling VigorHigh
Seedling VigorHigh
Small GrainYes
Vegetative Spread RateRapid

Johnsongrass Edibility and Other Uses

Berry/Nut Seed ProductNo
Christmas Tree ProductNo
Fodder ProductYes
Fuelwood ProductNone
Lumber ProductNo
Naval Store ProductNo
Palatable to a Browse AnimalHigh
Palatable to a Grazing AnimalHigh
Palatable to a HumanNo
Pulpwood ProductNo
Veneer ProductNo
CategoryMonocot
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Old 09-13-2007, 09:50 PM   #2
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Johnsongrass

Johnsongrass grows like a Graminoid. Johnsongrass is an Perennial. Johnsongrass is Introduced to U.S.. Johnsongrass has a PLANTS Invasive Status of: KY, N'EAST, NE&GP, SEEPPC, STATE, SWSS, WSWS. Johnsongrass has a National Wetland Indicator Status of: FACU-, FAC. Summer and Fall is when Johnsongrass is actively growing. Johnsongrass has a Rapid growth rate after harvest. Johnsongrass is an allelopath. Johnsongrass has a Medium C:N Ratio. Johnsongrass has a coppice potential of No. Johnsongrass is not fall conspicuous. Johnsongrass has a Yellow colored flower. Johnsongrass has Green colored foliage. In the summertime, Johnsongrass has a Dense foliage porosity. In the wintertime, Johnsongrass has a Moderate foliage porosity. Johnsongrass has a Coarse foliage texture. Seeds of Johnsongrass are Brown. Seeds of Johnsongrass are Yes conspicuous. Johnsongrass grows as a Rhizomatous. The growth rate of Johnsongrass is Rapid. The mature height of Johnsongrass is 3.5 feet. The lifespan of Johnsongrass is Long. The shape and orientation of Johnsongrass is Erect. Johnsongrass is adapted to coarse textured soils. Johnsongrass is adapted to fine textured soils. Johnsongrass is adapted to medium textured soils. The anaerobic tolerance of Johnsongrass is Low. The CaCO3 tolerance of Johnsongrass is Low. Johnsongrass does not require cold stratification. The drought tolerance of Johnsongrass is Low. Johnsongrass requires a minimum of 165 frost free days per year. The minimum pH of Johnsongrass is 5. The maximum pH of Johnsongrass is 7. The minimum planting density per acre of Johnsongrass is 4800. The maximum planting density per acre of Johnsongrass is 11000. The minimum Precipitation that Johnsongrass requires is 32. The maximum Precipitation that Johnsongrass can handle is 60. The minimum root depth of Johnsongrass is 10 inches. The salininty tolerance of Johnsongrass is Low. The shade tolerance of Johnsongrass is Intolerant. The shade tolerance of Johnsongrass is Intolerant. The minimum temperature that Johnsongrass requires is -13. The bloom period of Johnsongrass is Late Summer. The commerical availability of Johnsongrass is Routinely Available. The fruit seed abundance of Johnsongrass is High. The fruit seed period of Johnsongrass begins Summer. The fruit seed period of Johnsongrass ends Fall. The fruit seed persistance of Johnsongrass is No. Johnsongrass is not propagated by bare roots. Johnsongrass is not propagated by bulbs. Johnsongrass is not propagated by container. Johnsongrass is not propagated by corms. Johnsongrass is not propagated by cuttings. Johnsongrass is propagated by seed. Johnsongrass is not propagated by sod. Johnsongrass is propagated by sprig. Johnsongrass is not propagated by tubers. Johnsongrass can generally yield 119280 seeds per pound of seeds. Johnsongrass has a Rapid seed spread rate. Johnsongrass has a High seedling vigor. Johnsongrass has a High seedling vigor. Johnsongrass has a small grain. Johnsongrass has a Rapid vegatative spread rate. Johnsongrass does not have a berry/nut seed product. Johnsongrass is not viable as a Christmas Tree. Johnsongrass makes a good fodder product. Johnsongrass does not make a good fuel wood product. Johnsongrass does not make a good lumber product. Johnsongrass does not make a naval store product. Johnsongrass is not palatable to browse animals. Johnsongrass is not palatable to grazing animals. Johnsongrass is not palatable to humans. Johnsongrass does not make a pulpwood product. Johnsongrass does not make a veneer product. Johnsongrass is of the category, Monocot.
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