Sunn Hemp

Sunn Hemp is a tropical legume that can produce 120 lbs/ac of nitrogen and transfer residual phosphorous and potash from the subsoil to the topsoil. In just 60 days, sunn hemp can grow up to 6 feet tall, creating up to 4 tons of organic matter. Primarily used in cover crop summer mixes after small grains, sunn hemp is an excellent forage for grazing mixes. Sunn hemp is excellent at weed suppression and has been shown to reduce soybean cyst nematode. Well-drained, sandy soils with a pH between 5 and 8.2 are preferred for planting sunn hemp with a soil temperature of 65°F – sunn hemp will terminate at 28°F and below.

Download Tech Sheet

Key Benefits

  • Reduce Soybean Cyst Nematode

  • Weed Suppression

  • Substantial Bio-Mass

Technical Information

Erosion Control
Forage Quality
Nutrient Scavenging
Quick Growth
Soil Building
Weed Suppression
Winter Hardiness
Nitrogen Produced120 LBS/AC
Seeding Rate LBS/ACDrilled: 6 – 10
Broadcast: N/A
Aerial: N/A
Seeding Depth¾ – 2″
Minimum Germination Temperature65° F
InterseedNot Recommended
Seeds/LB15,000

Corn Plantings

Trade NameCommon NameStandard Rate/ACHalf-Life (days)Notes
Accent 75DF/Steadfast75DFnicosulfuron/nicosulfuron + rimsulfuron0.66 oz/0.75 oz21
Atrazine 4Latrazine1-2 qt15-90
Balance Pro 4L/Balance Flexx 2Lisoxaflutole3 fl oz/6 fl oz50 – 120
Callisto 4L (includes Acuron, Acuron Flexi, Hales GT, Harness Max, Instigate, Lexar, Lumax, Resicore, Revulin, Solstice, Zemax, etc.)mesotrione3-6 fl oz10 – 50Sequential applications increase the potential for injury
Capreno 3.45SCtembotrione + thiencarbazone3 fl oz15
Clarity/Banvel 4S (DiFlexx, Distinct, Engenia, Status, XtendiMax/FeXapan)dicamba16-24 fl oz5-14Wait 120 days
Corvus 2.63SCisoxaflutole + thiencarbazone5.6 fl oz50-120
Harmony 50WDGthifensulfuron⅛ oz12Wait 45 days
Laudis 3.5SC (DiFlexx Due)tembotrione3 fl oz14Field bioassay recommended
Metribuzin 75DF (Sencor)metribuzin0.33 lb ai14-60
Peak 57WG (and Spirit)prosulfuron1 oz9-152
Permit/Sandea 75DFhalosulfuron⅔ oz9-27
Prowl H2O 3.8CSpendimethalin3 pt44Mid-Atlantic areas have not witnessed carryover
Python 80WDG (Hornet and SureStartflumetsulam1 oz14-120
Simazine 4L (Princep)simazine1-2 qt60
Stinger 3S (Hornet, Resicore, SureStart)clopyralid5 oz40

Soybean Plantings

Trade NameCommon NameStandard Rate/ACHalf-Life (days)Notes
Authority 75DF (Authority First, BroadAxe, Sonic, Spartan)Sulfentrazone4 oz32-302
Classic 25DF (Authority XL, Canopy, Envive, Fierce, Fierce XLT, Synchrony, Trivence, Valor XLT, etc.)Chlorimuron0.5-2 oz40
FirstRate 84WDG (Authority First, Sonic)Cloransulam0.3 to 0.6 oz8-33
Harmony 50WDGThifensulfuron⅛ oz12Wait 45 days
Metribuzin 75DF (Sencor)Metribuzin0.33 lb ai14-60
Prowl H2O 3.8CSPendimethalin3 pt44 Mid-Atlantic areas have not witnessed carryover
Python 80WDGFlumetsulam1 oz14-120Wait 9 months
Reflex 2E/Flexstar 1.88E (Warrant Ultra)Fomesafen1.5 pt100
Scepter 1.5ASImazaquin0.66 pt60-90
Select 2EClethodim10 oz3Wait 30 days
Valor 51WDG (Afforia, Envive, Fierce, Surveil, Trivence, Valor XLT, etc.)Flumioxazin2.5 oz12-20

Technical Information

Erosion Control
Forage Quality
Nutrient Scavenging
Quick Growth
Soil Building
Weed Suppression
Winter Hardiness
Nitrogen Produced120 LBS/AC
Seeding Rate

LBS/A

Drilled: 6 – 10
Broadcast: N/A
Aerial: N/A
Seeding Depth¾ – 2″
Min. Germ. F°65° F
InterseedNot Recommended
Seeds/LB15,000

Corn Plantings

swipe for additional information

Trade NameCommon NameStandard Rate/ACHalf-Life (days)Notes
Accent 75DF/Steadfast75DFnicosulfuron/nicosulfuron + rimsulfuron0.66 oz/0.75 oz21
Atrazine 4Latrazine1-2 qt15-90
Balance Pro 4L/Balance Flexx 2Lisoxaflutole3 fl oz/6 fl oz50 – 120
Callisto 4L (includes Acuron, Acuron Flexi, Hales GT, Harness Max, Instigate, Lexar, Lumax, Resicore, Revulin, Solstice, Zemax, etc.)mesotrione3-6 fl oz10 – 50Sequential applications increase the potential for injury
Capreno 3.45SCtembotrione + thiencarbazone3 fl oz15
Clarity/Banvel 4S (DiFlexx, Distinct, Engenia, Status, XtendiMax/FeXapan)dicamba16-24 fl oz5-14Wait 120 days
Corvus 2.63SCisoxaflutole + thiencarbazone5.6 fl oz50-120
Harmony 50WDGthifensulfuron⅛ oz12Wait 45 days
Laudis 3.5SC (DiFlexx Due)tembotrione3 fl oz14Field bioassay recommended
Metribuzin 75DF (Sencor)metribuzin0.33 lb ai14-60
Peak 57WG (and Spirit)prosulfuron1 oz9-152
Permit/Sandea 75DFhalosulfuron⅔ oz9-27
Prowl H2O 3.8CSpendimethalin3 pt44Mid-Atlantic areas have not witnessed carryover
Python 80WDG (Hornet and SureStartflumetsulam1 oz14-120
Simazine 4L (Princep)simazine1-2 qt60
Stinger 3S (Hornet, Resicore, SureStart)clopyralid5 oz40

Soybean Plantings

swipe for additional information

Trade NameCommon NameStandard Rate/ACHalf-Life (days)Notes
Authority 75DF (Authority First, BroadAxe, Sonic, Spartan)Sulfentrazone4 oz32-302
Classic 25DF (Authority XL, Canopy, Envive, Fierce, Fierce XLT, Synchrony, Trivence, Valor XLT, etc.)Chlorimuron0.5-2 oz40
FirstRate 84WDG (Authority First, Sonic)Cloransulam0.3 to 0.6 oz8-33
Harmony 50WDGThifensulfuron⅛ oz12Wait 45 days
Metribuzin 75DF (Sencor)Metribuzin0.33 lb ai14-60
Prowl H2O 3.8CSPendimethalin3 pt44 Mid-Atlantic areas have not witnessed carryover
Python 80WDGFlumetsulam1 oz14-120Wait 9 months
Reflex 2E/Flexstar 1.88E (Warrant Ultra)Fomesafen1.5 pt100
Scepter 1.5ASImazaquin0.66 pt60-90
Select 2EClethodim10 oz3Wait 30 days
Valor 51WDG (Afforia, Envive, Fierce, Surveil, Trivence, Valor XLT, etc.)Flumioxazin2.5 oz12-20