Sunn Hemp

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Welcome to Missouri Integrated Pest Management's Forages/Livestock Question of the Week - 6/4. Last week's topic was sunn hemp: a compliment to cool season forage systems in the summer. It was presented by Harley Naumann, Assistant Professor.

[@ngana8755]

10:37 min inoculated Sunn Hemp seeds work best for nitrogen fixation.

[@pangkitampi5293]

is good for dairy cattle

[@bloombledotcom]

Thanks gang!

[@ks_hunter7327]

In MO what month do you normally plant sun hemp?

[@MUIPM]

It is best to align sunn hemp planting date with a consistent 1” soil temperature of 70 F. This typically coincides with a range in dates across Missouri of mid-May to early June depending on the year.

[@dennistaylor3796]

What happened to the sunn hemp stalks that were over mature and grazed. We're they trampled down?

[@MUIPM]

@dennistaylor3796 Because our studies involved sod seeding sunn hemp into cool season grass pasture, much of the sunn hemp stalk residue is trampled by livestock while grazing stockpiled cool season grasses through late fall/early winter. However, some residue remains during winter but generally deteriorates going into the subsequent growing season. The stem is hollow, which facilitates more rapid degradation.

[@michaelripperger5674]

What about mixing w Sudan grass or sunflowers?

[@MUIPM]

While we have not mixed sunn hemp with sudangrass in a research setting at MU, we have observed these two species in mixtures at other university farms and on private farms around Missouri.
We have not observed a mixture of sunn hemp and sunflower.

[@traviss6500]

I have done it this year. We will see at harvest.

[@raterfarms4329]

How far north can it be grown?

[@MUIPM]

@raterfarms4329 There are data for growing sunn hemp from as far north as Bridger, Montana in the West and Pennsylvania in the East.

[@raterfarms4329]

Thank you, I'm in N.Y. @@MUIPM

[@kendrakennedy3343]

Seex

[@johnrochester3551]

Tried it twice no germination

[@dirtymikentheboys5817]

What was your location?

[@jamesparks6137]

Tried it in Denver without any plants, had some seed left over so I tried it again in Arizona. Same seed, was several years old but it came up great. I think I planted it too early in Denver and too late in az,seems like it liked the warmth to a point.

[@GTILOUD]

@@jamesparks6137 works great in central Fl, jee i wonder why you had trouble growing a WARM season crop in DENVER but no quick solutions as to why a summer crop planted in spring there would not work come to mind.

[@fatheroffibereconomics]

Soil and air temp more than likely, along with other normal agronomy factors like wrong seed, seed depth, etc. Id10t error...

[@fatheroffibereconomics]

You guys should like Hibiscus Cannabinus. Just so happens that I'm the global mind on these matters, so you reached to top by finding me

[@fatheroffibereconomics]

Hibiscus Cannabinus is a better choice. Sad that people dont know, actual criminal