RANGELAND, PERMANENT GRASS PASTURES, NON-CROPLAND - TX, OK, AND NM - MESQUITE
In areas west of the Mississippi River, use Terva 22K to control susceptible broadleaf weeds and woody plants on rangeland and permanent grass pastures, fallow cropland, spring-seeded wheat, barley and oats not underseeded with a legume, non-cropland, and on Conservation Reserve Program (CRP) acres. This product is NOT for sale or use in the San Luis Valley of Colorado.
PRECAUTIONS AND RESTRICTIONS
Use this product only as specified on the label.
Observe any special use and application restrictions and limitations including method of application and permissible areas of use as promulgated by state or local authorities.
Do not mix with dry fertilizer.
Chemigation: Do not apply this product through any type of irrigation system.
Grazing Poisonous Plants: Application of this herbicide may increase the palatability of certain poisonous plants. Do not graze treated areas until poisonous plants are dry and no longer palatable to livestock.
Maximum Use Rates:
Non-cropland Areas: Total use of picloram including re-treatments or spot treatments must not exceed 1 lb a.i. per acre picloram (2 quarts per acre Terva 22K) per annual growing season.
Rangeland and Permanent Grass Pastures: For control of noxious weeds as defined by federal, state, or local authorities, picloram may be applied at up to 1 lb a.i. per acre (2 quarts Terva 22K per acre) per annual growing season as a broadcast treatment. Spot treatments may be applied at the equivalent broadcast rate of up to 1 lb a.i. picloram (2 quarts Terva 22K) per acre.
For control of other broadleaf weeds and woody plants, picloram may be applied broadcast at up to 0.5 lb a.i. per acre (1 quart Terva 22K per acre) per annual growing season. Apply spot treatments at an equivalent broadcast rate of up to 1 lb a.i. per acre (2 quarts Terva 22K per acre) per annual growing season, but not more than 50% of an acre may be treated. Repeat treatments may be applied as necessary, but total use must not exceed the maximum amount specified.
Cropland (Spring-Seeded Wheat, Barley and Oats): Do not apply more than 0.09 lb a.i. picloram (1.5 fluid ounces of Terva 22K) per acre during the small grain growing season.
Fallow Cropland (Not Rotated to Broadleaf Crops): Do not apply more than 0.25 lb a.i. picloram per acre (1 pint per acre of Terva 22K) as a broadcast treatment per annual growing season.
Conservation Reserve Program (CRP) for Seeding to Permanent Grasses Only: Do not broadcast apply more than 0.5 lb a.i. per acre of picloram (1 quart per acre of Terva 22K) per annual growing season or apply more than 1 lb a.i. per acre picloram (2 quarts per acre of Terva 22K) per annual growing season as a spot application. To reduce potential damage to subsequent small grain crops, use the lower specified rate or discontinue the use of Terva 22K at least 2 years prior to the seeding of small grain crops. After CRP, do not plant broadleaf crops in treated acres until an adequately sensitive bioassay shows that no detectable picloram is present in the soil.
Precautions for Avoiding Injury to Non-Target Plants
- Do not move treated soil to other areas or use it to grow plants if they are not registered for use with picloram until an adequate sensitive bioassay or chemical test shows that no detectable picloram is present in the soil.
- Do not spray if the loss of forage legumes, including clover cannot be tolerated. Terva 22K may injure or kill legumes. New legume seedlings may not grow for several years following application of this product.
- Do not make application when circumstances favor movement from treatment site.
- Do not rotate to food or feed crops on treated land if they are not registered for use with picloram until an adequately sensitive bioassay or chemical test shows that no detectable picloram is present in the soil.
- Do not contaminate water intended for irrigation or domestic purposes. To avoid injury to crops or other desirable plants, do not treat or allow spray drift or runoff to fall onto banks or bottoms of irrigation ditches, either dry or containing water, or other channels that carry water that may be used for irrigation or domestic purposes.
- Do not apply Terva 22K on residential or commercial lawns or near ornamental trees and shrubs. Untreated trees can occasionally be affected by root uptake of herbicide through movement into the topsoil or by excretion of the product from the roots of nearby treated trees. Do not apply Terva 22K within the root zone of desirable trees unless such injury can be tolerated.
- Allow 7 days of grazing on an untreated grass pasture (or feeding of untreated hay) before transferring livestock from treated grazing areas (or feeding of treated hay) onto sensitive broadleaf crop areas; otherwise, urine and manure may contain enough picloram to cause injury to sensitive broadleaf plants.
- Do not use manure from animals grazing treated areas or feeding on treated hay on land used for growing broadleaf crops, ornamentals, orchards, or other susceptible desirable plants. Manure may contain enough picloram to cause injury to susceptible plants.
- Do not use grass or hay from treated areas for composting or mulching of susceptible broadleaf plants.
- Do not apply to snow or frozen ground. Application during very cold (near freezing) weather is not advisable.
- Do not use on flood or sub-irrigated land.
See label for Mixing Instructions and Tankmix Information application instructions.
Ground or Aerial Broadcast
Use Terva 22K as a broadcast treatment by ground or aerially to control listed broadleaf weeds and woody plants. Apply Terva 22K as a coarse low-pressure spray at the specified rates in a spray volume of 1 or more gallons per acre by air or 10 or more gallons per acre by ground. Aerial applications can be applied using aerial electrostatic spray charging systems.
High-Volume Foliar Applications
Spray to thoroughly wet foliage and stems. An approved agricultural surfactant may be added at the manufacturer’s recommended rate. Do not apply more than the maximum application rate of Terva 22K specified for a given treatment site.
Use application rates as specified in the “Approved Uses” section of the label. Apply in a total spray volume of 20 to 100 gallons per acre. To prevent misapplication, apply spot treatments with a calibrated boom or with hand sprayers according to directions provided below. Do not exceed maximum application rates for Terva 22K for a given treatment site. On rangeland and permanent grass pastures, apply spot treatments at an equivalent broadcast rate of up to 2 quarts per acre per annual growing season, but not more than 50% of an acre may be treated. Repeat treatments may be applied, but total use must not exceed the maximum amount specified.
Hand-Held Sprayers: Hand-held or backpack sprayers may be used for spot applications of Terva 22K if care is taken to apply the spray uniformly and at a rate equivalent to a broadcast application. See recommended rates in the table on the label.
Special Application Methods
Wick Application – Mix 1 part of Terva 22K with 2 parts of water to prepare a 33% solution. Apply when weeds are actively growing and are above most desirable plants. For ironweed and goldenrod, best results are obtained when applications are made prior to the early bud stage. Drain the wick applicator and clean after each use. Change ropes when flow is reduced from wear, extended use, poor cleaning, or intermittent use.
Carpet Roller Application – Terva 22K can be applied with carpeted rollers where drift presents a hazard to susceptible crops, surface waters, and other sensitive areas. Apply to previously untreated plants less than 6 feet tall and short enough to pass beneath the tractor without breaking off at the ground. Applications made during periods of extended drought conditions will not provide acceptable control. Do not burn, mow, or otherwise disturb the treated plants during the remainder of the growing season. Operate carpeted rollers as close to the ground as possible without breaking the stems, but above the tallest grasses. Grasses growing adjacent to treated plants may exhibit temporary injury. Maximize herbicide deposition on stems and foliage and minimize drippage losses by rotating the carpeted roller at 30 to 40 rpm with the lower edge moving in the same direction as the direction of travel. Maintain the carpet sufficiently wetted to apply up to 1 gal./acre of herbicide/water mixture to stands of average density (100 to 200 plants/acre) and up to 2 gals./acre in dense stands (300 to 400 plants/acre). Rewet rollers at regular intervals. See the “Rangeland, Permanent Grass Pastures, and Non-Cropland (Specific Use Directions: All Areas West of the Mississippi River – Carpet Roller Use)” section of the label for treatment directions.
Soil Spot Concentrate: Terva 22K may be applied undiluted as a spot concentrate application to control ashe juniper, eastern redcedar, and eastern persimmon (see specific user directions for these plant species which follow). Applications should precede periods of expected rainfall. Apply directly to the soil within the dripline and on the upslope side of the tree. Applications to trees taller than 12 feet are not recommended.
Special Ground Sprayer Equipment: To control annual and perennial weed species using special low-volume, minimum drift equipment such as the hooded Forage Chemical Mower, apply 1 to 2 pts. of Terva 22K in total volumes ranging from 1 gallon to 5 gallons per acre in water alone or as an oil/water emulsion at a 1:5 and 1:4 oil-to-water ratio for a 1 gallon and 5 gallon per acre solution respectively.
SPECIFIC USE DIRECTIONS FOR RANGELAND, PERMANENT GRASS PASTURES, AND NON-CROPLAND
Requirements for Non-Cropland Areas
Use Terva 22K to control susceptible broadleaf weeds and woody plants on non-cropland areas such as roadsides or other rights-of-way, fence rows, and around farm buildings. Up to 2 quarts of Terva 22K per acre may be applied.
Maximum Use Rates for Non-Cropland Areas: Total use of Terva 22K including re-treatments or spot treatments must not exceed 2 quarts per acre per annual growing season.
Requirements for Rangeland and Permanent Grass Pastures for States West of the Mississippi River
Use Terva 22K on rangeland and permanent grass pastures to control susceptible broadleaf weeds and woody plants. Many annual weeds at the seedling stage are controlled at the rate of 1 pt. per acre. Where a rate range is specified, choose the higher rate for dense weed infestations and for more dependable, longer-lasting control. Lower rates will perform best when applied under favorable conditions and at the optimum growth stage, but may provide a lower level of control and require re-treatment. For best results, treat when weeds are small and actively growing in the spring before full bloom; however, certain weeds may also be treated in late summer or fall. Treatments during full bloom or seed stage of some weeds may not provide acceptable control.
Refer to the “Application Methods” section of the label for information on various methods of application.
Precautions and Restrictions:
Maximum Use Rates for Rangeland and Permanent Grass Pastures: For control of noxious weeds as defined by federal, state, or local authorities, Terva 22K may be applied at up to 2 quarts per acre per annual growing season as a broadcast treatment. Spot treatments may be applied at the equivalent broadcast rate of up to 2 quarts per acre.
For control of other broadleaf weeds and woody plants, Terva 22K may be applied broadcast (ground, air, or high volume foliar) at up to 1 quart per acre per annual growing season. Spot treatments (hand sprayer, calibrated boom, high volume foliar, or soil spot concentrate) may be applied at an equivalent broadcast rate of up to 2 quarts per acre per annual growing season, but not more than 50% of an acre may be treated. Repeat treatments may be applied, but total use must not exceed the maximum amount specified.
Grazing Restrictions: Do not cut grass for feed within two weeks after treatment when applying more than 1 quart of Terva 22K per acre. Meat animals grazing for up to two weeks after treatment should be removed from treated areas three days prior to slaughter. Do not graze lactating dairy animals on treated areas within two weeks after treatment. Certain established grasses such as bromegrass, blue gamma, and buffalograss may be suppressed when using rates of Terva 22K over 1 quart per acre. However, subsequent grass growth should be improved by release from weed competition.
Rangeland, Permanent Grass Pastures, and Non-Cropland (Specific Use Directions: Texas, Oklahoma, and New Mexico)
Apply Terva 22K as a broadcast treatment by ground or air, as a spot application, or high volume foliar application to control listed broadleaf weeds and woody plants unless otherwise specified (see “Application Methods” section of the label). Refer to the “Requirements for States West of the Mississippi River” for maximum use rates. To control certain species, Terva 22K may be applied alone or in combination with 2,4-D as indicated in the table. When Terva 22K is applied alone, herbicide symptoms will be slower to appear than when it is applied in combination with 2,4-D.
- 1-2 pts./acre Terva 22K + 0.67-1.33 pt. Reclaim or 2 pts. Terva 22K + 1 pt. Remedy
- 1-2 qts./100 gallons Terva 22K + 1-2 qts. Reclaim or 1.5-3 pts. Remedy
Specific Use Directions
Terva 22K Alone: Apply as a water spray or oil emulsion (see mixing instructions) in 4 or more gpa by air or 10 or more gpa by ground. Increase spray volumes with increasing brush density and height to ensure adequate coverage. Where control of pricklypear cactus is desired, use the 2 pint/acre rate of Terva 22K.
Terva 22K in Tank Mix: Tank mixing with Reclaim will provide control of pricklypear and improved control of legume species such as mesquite and acacias, while tank mixing with Remedy will provide improved control of non-legume species such as granjeno, oaks, and hackberry. Regrowth mesquite should be at least 4 ft. tall prior to treatment. See labels for Reclaim and Remedy for additional treatment directions and information on mesquite control. Within rate ranges given for Terva 22K and tank mix products, consult local cooperative extension.
Timing and Factors in Control: The herbicidal response of mesquite is strongly influenced by environmental conditions as well as foliage condition and stage of growth. For best results, apply when new growth foliage has turned from light to dark green, when the soil temperature has reached 75°F to 83°F at a depth of 12-18 inches, and soil moisture is adequate for plant growth. Application should be made within 45 days after the critical soil temperature at the 12-18 inch depth has been reached, or if Terva 22K is applied in combination with Reclaim within 60 days. Product performance may be adversely affected if application is made before mesquite foliage has turned from light to dark green or if foliage has been injured or removed by late frost, insects, hail, or plant diseases. Do not apply if mesquite exhibits new (light green) growth in response to significant rainfall during the growing season. Soil temperatures at the 12-18 inch depth may vary with soil texture and drainage. Coarse-textured (sandy) soils warm up sooner than fine-textured soils (clay) soils and dry soils warm up more quickly than wet soils.
Reapplication: Do not reapply in the same growing season. Re-treatment will not be effective until woody plants develop sufficient new foliage for interception, uptake, and translocation of the herbicide to plant roots.