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5 oz wt/A, which is equivalent to 1-1.5 oz wt Resolve SG + 2-3 fl oz Balance Flexx. Do not apply on corn with a maturity less than 77 days. Corn must be planted at least 1.5 inches deep. Most effective if rain falls within 14 days after the application. The label recommended carrier rate is 15 gpa for dense weeds or 10 gpa for low weed densities with ground applications (do not apply with aerial equipment). Do not apply on coarse texture soil (sand, sandy loam, or loamy sand) with less than 1% organic matter.
Do not apply on coarse texture soils where the water table is less than 25 feet below the soil surface (see supplemental label for restriced soil types). Do not load, rinse, or empty equipment within 150 feet of a well or surface water unless doing so on a properly constructed impermeable containment area. Discharges in excess of 25 lb ai must be reported to the SD Dept. of Ag.
PPS, PPI, or PRE. Apply from 30 days prior to planting but prior to corn emergence. If incorporating, do not incorporate more than 2 inches deep. For PRE applications, make sure the seed furrow is closed to avoid corn injury. May control or suppress many emerged broadleaf weed species less than 3 inches tall. If weeds are emerged, add COC or MSO. If weeds are taller than 3 inches, add tank-mix partner such as glyphosate, 2,4-D, dicamba, or Gramoxone. If mixing with a loaded glyphosate product or Ignite, no additional surfactant is needed.
EPIC 58DF (flufenacet + isoxaflutol) Site of Action: 15+27
Premix containing 48% flufenacet (Define) + 10% isoxaflutol (Balance). Foxtail control in SDSU tests has been very good. Woolly cupgrass and sandbur require additional herbicide program or cultivation for late emerging weeds. Several broadleaves including pigweed, waterhemp, lambsquarters, velvetleaf, Venice mallow, and mustard are controlled. Cocklebur and sunflower are partially controlled. Crop tolerance has been satisfactory in SDSU tests. Plant seed at least 1.5 inches deep. Avoid coarse soils with pH over 7.5; coarse or medium soil with less than 1.5% O.M.; and medium soils with less than 2.5% O.M. and pH over 7.5.
Minimum carrier is 10 gpa for ground equipment. Soybeans can be planted in 6 months; alfalfa, barley, millet, oats, sorghum, and wheat can be planted in 12 months. Avoid groundwater contamination. Do not apply if the water table is less than 25 feet deep and the soil O.M. is less than 2% in the upper 12 inches and the soil texture is sandy loam, loamy sand, sand, or modified versions of these textures. Do not over-irrigate soils with less than 15% field moisture holding capacity. A supplement (24c) label for SD prohibits Epic applications in Bennett, Butte, Fall River, Gregory (south of US Hwy 18), Harding, Jackson (south of White River), Lawrence, Mellette, Perkins, Shannon, Todd, and Tripp (south of US Hwy 18) county.
PPS. May be surface applied or incorporated into top 1-2 inches. Apply up to 21 days before planting when used alone or up to 30 days if part of a planned post program. Adjust rates according to timing.
PRE. Apply within 7 days of planting. Do not apply after corn emerges.
Epic may be tank-mixed with several herbicides including burndown products to control emerged weeds in reduced till systems.
RADIUS (flufenacet + isoxaflutole) Site of Action: 15+27 Preemergence herbicide containing 36% flufenacet (Define) + 4% isoxaflutole (Balance) for control of grass and broadleaf weed species. Grass weed species controlled include foxtail, crabgrass, barnyardgrass, and others. Woolly cupgrass and field sandbur are suppressed. Broadleaf weed species controlled include pigweed, waterhemp, lambsquarters, velvetleaf, Venice mallow, mustard, and others. Cocklebur and sunflower are suppressed.
Rates range from 7-28 oz/A (0.22-0.88 lb ai) based on soil texture and O.M. Use 8-18 oz for coarse soil, 13-28 oz for medium soil, and 20-28 oz for fine soil. Check label for appropriate rates based on the field soil O.M. Use lower rates if the soil pH is greater than 7.5.
Plant corn at least 1.5 inches deep. Apply Radius only with ground equipment. Minimum carrier is 10 gpa. Soybeans can be planted in 6 months whereas alfalfa, wheat, barley, rye, and sorghum can be planted 12 months after application.
Supplemental label for application restrictions in South Dakota. Do not apply in Bennett, Butte, Fall River, Gregory (south of US Highway 18), Harding, Jackson (south of White River), Lawrence, Mellette, Perkins, Shannon, Todd, and Tripp (south of US Highway 18). Do not apply Radius if the water table is less than 25 feet below the ground surface where the soil O.M. is less than 2% in any portion of the field. Do not apply more than 0.79 lb/A flufenacet or 0.14 lb/A isoxaflutole (or 28 oz/A Radius) per season.
PPS, PPI. May be surface applied 30 days prior to planting or incorporated into the top 1-2 inches up to 21 days before planting.
PRE. Apply at or after planting, but prior to crop or weed emergence.
Radius may be tank-mixed with several broadleaf herbicides including burndown products to control emerged weeds in reduced till systems.
Callisto is a systemic preeemergence or postemergence HPPD inhibiting herbicide than can cause “bleaching” injury symptoms on weeds. Callisto gives very good to excellent control of annual broadleaves including pigweed, waterhemp, lambsquarters, ragweed, buffalobur, velvetleaf, nightshade, and smartweed. Sunflower and cocklebur are controlled with postemerge applications.
Atrazine improves control of kochia, wild buckwheat, and waterhemp; results in SDSU tests have been very good. Callisto is used in programs with preemergence or postemergence grass herbicides.
Note rates for preemergence or postemergence. Crop tolerance has been satisfactory in SDSU tests. Consider avoiding application on fields treated with Counter or Lorsban. Do not tank mix postemergence applications with an organophosphate or carbamate insecticide or apply these insecticides 7 days before or after a Callisto application. Do not cultivate 7 days before or after application.
Do not tank mix with emulsifiable concentrate grass herbicides.
Minimum carrier is 10 gpa for ground equipment. Section 24c label for aerial applications in SD. For aerial applications, minimum carrier volume is 3 gpa and avoid applications within 50 feet of sensitive crops (broadleaf species). Use additives with postemergence application.
14 www.iGrow.org Small grains may be planted 4 months after application. Soybeans, sorghum, flax, potatoes, sunflowers, canola, alfalfa, and sweetcorn can be planted the following season (10 months); peas, dry beans, and all other rotational crops may be replanted 18 months after application.
PRE. Rate is 6.0-7.7 oz per acre. Rain required. May be applied with liquid fertilizer.
POST. Rate is 3 oz per acre. Apply from emergence to 30 inches. Use COC at 1 gal/100 gal and 28% N at 2.5 gal/100 gal or AMS at 2.5 lb per acre. Do not use MSO. If mixing with glyphosate, AMS and perhaps a NIS may be added if necessary but do not add UAN, COC, or MSO.
Tank-mixes with preeemergence applications of Callisto at 6-7.7 oz per acre include Degree, Dual, Harness, Outlook, Surpass, and TopNotch. Tank-mixes of 5-6 oz include atrazine, Bicep, Degree Extra, Guardsman, and Harness Xtra. Callisto may be mixed with Gramoxone, glyphosate, and 2,4-D for burndown.
Tank-mix postemergence applications on the Callisto label are listed below. Additional tank-mixes with Steadfast, Hornet, Accent, Basis Gold, and Ignite (LL corn) are listed in other sections. Do not add MSO with tank-mixes.
CALLISTO + ATRAZINEPOST. Mix 3 oz Callisto plus atrazine at 0.5-1 pt 4L or 0.3-0.6 lb 90DF per acre. Very good combination. Do not add MSO.
20-24 fl oz Callisto Xtra For added foliar and residual control of wild buckwheat and other common broadleaf species. Apply 20 fl oz/A on susceptible weeds less than 5 inches tall or 24 fl oz/A for weeds 5-10 inches tall or for added residual control. Do not apply more than 24 fl oz per year.
Callisto Xtra at 20-24 fl oz/A is equivalent to 2.5-3 oz Callisto and 0.5-0.6 qt atrazine 4L.
Add NIS (0.25% v/v) or COC (1% v/v). Choosing COC may result in more consistent weed control, but the risk of crop injury will be greater relative to NIS. In addition, UAN (28%N, 2.5% or 2.5 gal/100 gal spray solution) or AMS (8.5-17 lb/100 gal spray solution) may be added. Adding MSO may result in severe crop injury. If tank mixing with a fully loaded glyphosate product for Roundup Ready corn or Ignite for Liberty Link corn, only add AMS. NIS may be added if needed for the glyphosate product. Do not add UAN when mixing with glyphosate.
EPOST. Apply to corn less than 12 inches tall.
2.7-3.25 qt Lumax 3.7L Premix containing 2.49 lb s-metolachlor (Dual II Magnum) plus 0.249 lb mesotrione (Callisto) + 0.935 lb ai atrazine per gal. Rate is 2.7-3.25 qt per acre. The low rate is for soils with less than 3% OM; use the high rate for soils with more than 3% O.M.
Lumax provides good to excellent control of foxtails and very good to excellent control of annual broadleaf weeds including velvetleaf, lambsquarters, pigweed, waterhemp, common ragweed, smartweed, nightshade, buffalobur, and kochia. Crop tolerance has been good in SDSU tests. Note restrictions as for Callisto. Do not rotate to crops other than corn, soybeans, or sorghum the following year. Do not graze or harvest forage or grain for 45 days after application. Minimum carrier is 10 gpa for ground applications. Do not apply with aerial equipment.
EPP, PRE. Apply up to 14 days before planting to the soil surface. If weeds are emerged and foliar activity is desired, but include COC (1% v/v or 1 gal per 100 gallons water).
EPOST. Lumax may be applied to corn less than 12 inches tall. Does not control emerged grasses. A NIS (0.25% v/v or 1 qt per 100 gallons water) or COC (1% v/v or 1 gal per 100 gallons water) may be used, but avoid using nitrogen based adjuvants (AMS or UAN). Temporary injur may occure if COC is used. AMS may be used with Liberty in Liberty Link corn, but then no other adjuvant may be used for that application.
Carrier volume should be 10-80 gpa for preemergence applications or 10-30 gpa for postemergence applications (20 gpa in dense canopy). For postemergence applications, a non-ionic surfactant at 0.25% v/v (1 qt per 100 gallons) may be used. If a crop oil concentrate is used, add less than 1% v/v or less than 1 qt/A. Do not use AMS, UAN, or MSO when applied alone, but these adjuvants may be used with certain tank-mixes according to label specifications.
Do not rotate to crops other than corn, soybean, sorghum, wheat, barley, oats, rye or potatoes. If Camix is applied after June 1, do not rotate to crops other than corn or sorghum. Do not graze or harvest forage or grain for 45 days after application.
EPP, PRE. Apply to soil surface up to 14 days before planting.
EPOST. May be applied after corn emergence to corn plants less than 30 inches tall or the V8 growth stage. Does not control emerged grasses but may control small broadleaf weeds less than 3 inches tall.
Impact and Armezon inhibit a similar site of action as Callisto. They control several broadleaf weed species and suppress some common annual grass weed species (crabgrass, foxtail species, etc). Add atrazine at 0.25-1.5 lb ai/A to improve control. Lower atrazine rates may improve burndown and higher rates may provide residual control. Apply to small weeds 3-8 inches tall, depending on the species.
Many tank-mix options with broadleaf or grass herbicides. Do not apply with other herbicides that have a similar site of action, such as Callisto or Lumax. May be used after application of isoxaflutole (Balance, Epic, Radius) if the isoxaflutole rate is less than 0.063 lb ai/A (equivalent of 2 fl oz/A Balance Pro or 4 fl oz Balance Flexx). Corn may be injured if the adjuvants used with Impact are tank-mixed with growth regulator herbicides such as 2,4-D, Clarity, Distinct, or Marksman.
Add adjuvant and nitrogen. Adjuvants include COC or MSO at a rate of 1-1.5% v/v. Preferred adjuvant is MSO, particularly in conditions of moisture and temperature stress and to improve grass control. Nitrogen fertilizers include 28 or 34% UAN or ammonium phosphate (10-34-0) at 1.25-2.5% v/v, or AMS at 8.5-17 lb per 100 gallons. Minimum water carrier volume is 10 gpa for ground equipment or 3 gpa for aerial applications. Rainfast 1 hour after application.
Rotation interval is 3 months for cereal crops or 9 months for alfalfa, sorghum, sunflower, peas, dry beans, or snap beans.
POST. May be applied up to 45 days prior to corn harvest (which includes harvesting for forage). Use drop nozzles if crop canopy inhibits herbicide contact to weeds.
Laudis is a “bleacher” herbicide that inhibits a similar site of action as Impact or Callisto. Controls several annual broadleaf weed species and some annual grass weed species, such as barnyardgrass, crabgrass, and yellow foxtail. Suppresses green foxtail and field sandbur. Apply to broadleaf weeds less than 6 inches tall or grasses less than 4 inches tall. Add atrazine to improve weed control.
Add a surfactant and nitrogen fertilizer. Add MSO at 1% v/v (or minimum of 1.25 pt/A) or COC at 1% v/v. MSO is preferred where permitted. Also add UAN at 1.5 qt/A or AMS at 1.5 lb/A (8.5 lb/100 gal). UAN may be preferred during dry conditions. Minimum carrier is 10 gpa for ground applications.
Laudis may be rainfast after 1 hour. Control may be reduced if applied during heavy dew or drought conditions. Apply when weeds are actively growing. Do not harvest corn forage prior to 45 days after application.
Rotation interval is 4 months for small grains; 8 months for soybeans; 10 months for sorghum, peas, canola, dry beans and alfalfa;
or 18 months for sunflowers.