MesoCore™ is a concentrated herbicide formulation for the control of annual grasses and broadleaf weeds in field corn, field seed corn, field silage corn and yellow popcorn. MesoCoreTM can be mixed with acetochlor or Metolachlor 8E to broaden the spectrum of control of many weed species.

Functions: Herbicide

Herbicide Target Species: Broadleafs, Grasses

HRAC/WSSA Group: 27, 4

Application Technique: Aerial Application, Ground Soil Applied, Sprayers

Formulation Type: Concentrate Solutions

Knowde Enhanced TDS

Identification & Functionality

HRAC/WSSA Group
Agrochemical Functions
Technologies
Composition

ACTIVE INGREDIENTS:

Mesotrione: 2-[4-(methylsulfonyl)-1 ,3-cyclohexanedione - 13%

Clopyralid MEA salt: 3,6-dichloropyridinecarboxylic acid, monoethanolamine salt - 10.85%

OTHER INGREDIENTS - 76.15%

Features & Benefits

Product Features
  • MesoCoreTM combines two modes of action to increase the spectrum of weed control in corn.
  • MesoCore™ can be tank mixed with acetochlor or Metolachlor 8E to increase the spectrum of weed control in corn.
  • MesoCoreTM is a concentrated formulation that reduces handling, storage and disposal costs.
Product Information

ACTIVE INGREDIENT: Mesotrione and Clopyralid

HERBICIDE GROUP: 27 and 4

ACTIVE INGREDIENT PER GALLON: 1.20 lbs Mesotrione and .76 lbs Clopyralid

MODE OF ACTION: HPPD Inhibitor (mesotrione) and Synthetic auxin growth regulator (clopyralid)

PACKAGING: 2 x 2.5’s and 265 ga

Applications & Uses

Herbicide Target Species
Product Use Rate

TILLAGE SYSTEMS

MesoCore™ may be used in conventional, reduced, and no-tillage corn systems. Weed control will be greatest when applications are made as close to planting as possible. Thoroughly till soil or make an application of a burndown herbicide to control germinating and emerged weeds. Albaugh recommends that a burndown herbicide, such as paraquat, glyphosate, glufosinate, and/ or 2,4-D also be tank mixed with MesoCore™ in reduced, minimum, and notillage systems if weeds are present at application and corn has not yet emerged.

SOIL TEXTURE AND ORGANIC MATTER

The texture and organic matter of the soil on which the application of MesoCore™ is to be made must be known or determined prior to application. The use rate of MesoCore™ is determined by the soil texture grouping (coarse, medium, or fine; see Table 2) and percent organic matter content.

Table 2: Soil Texture Groupings for MesoCore™ Use Rate Selection.

COARSE MEDIUM FINE

Sand

Loamy Sand

Sandy Loam

Loam

Silt Loam

Silt Sandy

Clay Loam

Silty Clay Loam

Clay Loam

Sandy Clay

Silty Clay

Clay

MESOCORE™ USE RATES WHEN TANK-MIXED WITH ACETOCHLOR OR METOLACHLOR 8E

MesoCore™ use rates based on soil texture and organic matter content are outlined in Table 3. DO NOT apply MesoCore™ more than 28 days prior to planting or to field corn taller than 11 inches in height. MesoCore™ is not recommended for use on soils with greater than 10% organic matter or poor weed control may result.

SOIL TEXTURE RATE PER ACRE (FLUID OUNCES)*
SOIL ORGANIC MATTER CONTENT
LESS THAN 3% 3% OR GREATER
Coarse

18.0

(0.17 lbs mesotrione ai and 0.11 lbs clopyralid ai)

20.0

(0.19 lbs mesotrione ai and 0.12 lbs clopyralid ai)

Medium

20.0

(0.19 lbs mesotrione ai and 0.12 lbs clopyralid a

22.0

(0.21 lbs mesotrione ai and 0.13 lbs clopyralid ai)

Fine

22.0

(0.21 lbs mesotrione ai and 0.13 lbs clopyralid ai)

24.0

(0.23 lbs mesotrione ai and 0.14 lbs clopyralid ai)

*An additional 2.0 fluid ounces per acre may be used in areas of heavy weed infestation

DO NOT apply more than 26.0 fluid ounces (0.24 lbs mesotrione ai and 0.15 lbs clopyralid ai) per acre of MesoCore™ per season.

MESOCORE™ APPLICATION TIMING WHEN APPLIED WITH ACETOCHLOR OR METOLACHLOR 8E

EARLY PREPLANT (EPP) OR PREPLANT SURFACE:

MesoCore™ may be applied up to 28 days prior to planting. Albaugh recommends that a burndown herbicide, such as paraquat, glyphosate, glufosinate, and/or 2,4-D also be tank mixed with MesoCore™ to control emerged weeds.

PREPLANT INCORPORATED (PPI):

For PPI application, uniformly incorporate MesoCore™ into the upper 2 inches of the soil using a field cultivator, disk, or spring tooth harrow any time within 14 days prior to planting. Improper incorporation, excessive crop residues, or poor soil tilth may result in erratic, streaked, or otherwise unsatisfactory weed control.

DO NOT mix MesoCore™ deeper than 2 inches into the soil and avoid moving or shaping soil after incorporation.

PREEMERGENCE (PRE) SURFACE:

MesoCore™ may be applied to the soil surface as a broadcast application after planting but prior to corn emergence. Precipitation or sprinkler irrigation of at least 0.25 inch is required to bring MesoCore™ into contact with germinating weed seeds. If rainfall or sprinkler irrigation does not occur within 7 days after application, weed control may be improved by using a rotary hoe or similar equipment to incorporate the herbicide. Incorporation equipment should be operated at a shallow depth to avoid disturbance of germinating corn seed. Erratic weed control resulting from exposure of untreated soil may occur if surface soil is moved or reshaped after incorporation.

POSTEMERGENCE:

MesoCore™ may be applied after field corn emergence. See the “Adjuvants” section of the label for adjuvant recommendations. DO NOT apply postemergence to field corn with liquid fertilizer as the carrier or severe crop injury may occur. Apply this treatment when broadleaf weeds are less than 3 inches tall. Occasional field corn leaf burn may result, but this will not affect later corn growth or yield. Postemergence applications to field corn must occur before the crop reaches 11 inches in height. DO NOT apply MesoCore™ to emerged yellow popcorn or severe crop injury may occur.

MesoCore™ will not provide consistent control of emerged grass weeds. For control of emerged grass weeds, a grass herbicide tank mixture may be required (see tank mix section of this label). Tank mixtures with atrazine can improve control of emerged annual grass and broadleaf weeds. Refer to atrazine product labels for use directions and restrictions and weeds controlled.

SPLIT APPLICATION:

MesoCore™ may be applied as a split application in field corn, field seed corn, or field silage corn. For a split application program, apply approximately half (50%) of the labeled rate of MesoCore™ (for the soil type, from Table 3) prior to crop emergence, followed by a second MesoCore™ application at approximately half (50%) of the labeled rate, but a minimum of 10.0 fluid ounces (0.09 lbs mesotrione ai and 0.06 lbs clopyralid ai) per acre, as a post application after corn emergence. The total amount of MesoCore™ applied in the split application program cannot exceed the labeled rates by soil type listed in Table 3 or 26.0 fluid ounces (0.24 lbs mesotrione ai and 0.15 lbs clopyralid ai) per acre per season. Refer to the Postemergence section above for instructions on postemergence applications.

Directions for use

It is a violation of Federal law to use this product in a manner inconsistent with its labeling.

DO NOT apply this product in a way that will contact workers or other persons, either directly or through drift. Only protected handlers may be in the area during application. For any requirements specific to your State or Tribe, consult the agency responsible for pesticide regulation.

FOR ALL TANK MIXTURES: It is the pesticide user’s responsibility to ensure that all products are registered for the intended use. Read and follow the applicable restrictions and limitations and directions for use on all product labels involved in tank mixing. Users must follow the most restrictive directions for use and precautionary statements of each product in the tank mixture.

Properties

Formulation Type
Physical Form

Safety & Health

Precautionary Statements

CAUTION. Causes moderate eye irritation. Avoid contact with eyes or clothing. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco or using the toilet. Remove and wash contaminated clothing before reuse.

Personal Protective Eqiupment

Applicators and other handlers must wear:

  • Long-sleeved shirt and long pants
  • Chemical-resistant gloves made of any waterproof material
  • Shoes plus socks
  • Protective eye

Follow manufacturer’s instructions for cleaning/maintaining PPE. If no such instructions for washables exist, use detergent and hot water. Keep and wash PPE separately from other laundry. Discard clothing and other absorbent materials that have been drenched or heavily contaminated with this product’s concentrate. Do not reuse them. Follow manufacturer’s instructions for cleaning/maintaining PPE. If no such instructions for washables exist, use detergent and hot water. Keep and wash PPE separately from other laundry.

User Safety Recommendations

Users should:

1. Wash thoroughly with soap and water after hanaling and before eating, drinking, chewing gum, using tobacco or using the toilet.

2. Remove clothing/PPE immediately if pesticide gets inside. Then wash thoroughly and put on clean clothing.

3. Remove PPE immediately after handling this product. Wash the outside of gloves before removing. As soon as possible, wash thoroughly and change into clean clothing.

Environmental Hazards

This pesticide is toxic to fish. Do not apply directly to water, or to areas where surface water is present or to intertidal areas below the mean high-water mark. Do not contaminate water when disposing of equipment washwaters. Clopyralid is known to leach through soil into ground water under certain conditions as a result of agricultural use. Use of this product where soils are permeable, particularly where the water table is shallow, may result in leaching to ground water.

Packaging & Availability

Packaging Type

Storage & Handling

Storage and Disposal

Do not contaminate water, food, or feed by storage or disposal.

PESTICIDE STORAGE: Store in original container only. Keep container closed when not in use. Do not store near food or feed. In case of spill or leak on floor or paved surfaces, soak up with vermiculite, earth, or synthetic absorbent.

PESTICIDE DISPOSAL: Pesticide wastes are toxic. Improper disposal of excess pesticide, spray mixture, or rinsate is a violation of Federal law. If these wastes cannot be disposed of by use according to label instructions, contact your State Pesticide or Environmental Control Agency or the Hazardous Waste Representative at the nearest EPA Regional Office for guidance.