General Information


Use of this product in certain portions of California, Oregon and Washington is subject to the January 22, 2004 Order for Injunctive Relief in Washington Toxics Coalition et al v. EPA, C01-0132C (W.D.W.A.). For further information, please refer to

Sekor P+D is a water soluble liquid product containing picloram and 2,4-D. Use Sekor P+D in permanent grass pastures and rangeland to selectively control many annual, biennial, and perennial broadleaf weeds and woody species listed on the label. Sekor P+D may also be used for control of unwanted annual and perennial broadleaf weeds and woody plants and vines on forest planting sites and non-crop areas including industrial, manufacturing, and storage sites; rights-of-way, such as railroads, electric power lines, communication lines, pipelines, highways; and wildlife openings in forest and non-crop areas.

Herbicidal effects of Sekor P+D occur primarily from uptake by plant foliage and translocation throughout the plant; however, secondary herbicidal activity may occur from soil uptake of picloram. Broadleaf plants can be killed or damaged by very small amounts of Sekor P+D. To prevent damage to crops and other desirable plants, carefully follow all directions and precautions.


Observe any special use and application restrictions and limitations, including method of application and permissible areas of use as required by state or local regulations. When used in tank mix combination with other products, follow all applicable use directions, precautions, restrictions, and limitations on the labels of each product used.

Application Rate Ranges: Use higher rates in areas with dense weed populations or for longer residual weed control. For best results, the lower rate should be used only when environmental conditions are favorable for plant growth and when the plants are in the recommended growth stage. Compared to results obtained with the higher rate, a lower rate may be slower to show activity, provide a lower level of control, and may require re-treatment.

Grazing Restrictions: There are no grazing restrictions for non-lactating dairy animals or other livestock including horses, sheep, goats, and other animals in the treatment area. Do not allow lactating dairy animals to graze treated areas within 7 days after application. Do not harvest grass cut for hay from treated areas for 30 days after application. Meat animals must be withdrawn from treated forage at least 3 days before slaughter.

Do not rotate to crops intended for food or feed use on areas treated with this product, other than range or pasture grasses, rye, forage sorghum, sudangrass, wheat, barley or oats not underseeded with a legume.

Do not move treated soil or use treated soil for growing other plants until soil residues of picloram are no longer detectable as indicated by an adequately sensitive bioassay or chemical test.

Do not apply Sekor P+D in residential areas or near ornamental trees and shrubs. Untreated trees can be affected by root uptake of the herbicide through movement into the top soil or by excretion of the product from the roots of nearby treated trees. Do not apply Sekor P+D within the area occupied by roots of desirable trees, unless such injury can be tolerated.

Established grasses are tolerant to this product, but newly seeded grasses may be injured until well established as indicated by tillering, development of a secondary root system and vigorous growth (refer to the Planting Grasses Section of the label).

Sekor P+D may suppress certain established grasses such as smooth bromegrass, Willman’s lovegrass, and buffalograss. However, subsequent grass growth should be improved by release from weed competition. Smooth bromegrass and Willman’s lovegrass grown for seed may be sensitive to this product if applied under adverse growing conditions (moisture stress).

If injury to existing forage legumes cannot be tolerated, do not spray pastures. Sekor P+D may injure or kill legume plants. Forage legumes may be less sensitive to the herbicide after the seed has set and plant growth is mature. Seeding of legumes may not be successful if made within one year of application.

Do not mix with dry fertilizer.

Do not transfer livestock from treated grazing areas to broadleaf crop areas without first allowing 7 days of grazing on untreated grass pasture. Otherwise, urine may contain enough picloram to cause injury to sensitive broadleaf plants.

Do not use manure from animals grazing treated areas 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 hay or grass from treated areas or manure from animals being fed treated forage or hay for composting or mulching of desirable, susceptible broadleaf plants.

Do not contaminate water intended for irrigation or domestic purposes. 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 to snow or frozen ground.

Do not apply or permit Sekor P+D or sprays containing Sekor P+D to contact crops or other desirable broadleaf plants, including but not limited to alfalfa, beans, cotton, grapes, melons, peas, potatoes, safflower, soybeans, sugar beets, sunflower, tobacco, tomatoes, and other vegetable crops, flowers, fruit plants, ornamentals, and shade trees.

Do not use Sekor P+D on sub-irrigated land.

Avoid injury to newly planted conifers. Conifer plantings vary. Pines planted sooner than 6 months after treatment with Sekor P+D may be injured in the South or west of the Cascade Mountains. Other conifers west of the Cascade Mountains may be injured if planted sooner than 8 to 9 months after treatment. For all conifers, the waiting period between treatment and planting should be 11 to 12 months in the area between the Cascade and Rocky Mountains and 8 to 9 months in the Lake States and Northeastern U.S.

For Mixing Application Instruction information, please refer to the label.

Limitations, Restrictions, and Exceptions


Broadcast Foliar Application (Ground or Aerial)

Unless otherwise specified, apply in water alone or in an oil/water emulsion in a total spray volume of 10 to 40 gallons per acre using ground equipment or 1 or more gallons per acre by aerial application. If aerially applied, results will be more consistent for spray volumes of 2 or more gallons per acre. Use of the lower total spray volume with ground equipment is recommended primarily where Sekor P+D is applied simultaneously with liquid fertilizer. Good coverage is essential. For aerial application, swath width should not exceed 1.25 times the wingspan of the aircraft. Aerial applications may be made using aerial electrostatic charging systems.

To provide more complete wetting and coverage of the foliage, a non-ionic surfactant may be used at recommended rates. Use a drift control additive for drift reduction and improved deposition.

Pasture, Rangeland and CRP Application Restrictions

- Do not cut forage for hay within 30 days of application.

- Do not exceed 7.4 pints (0.5 lb. a.i. picloram)/acre per broadcast application.

- Do not exceed 14.7 pints (1.0 lb. a.i. picloram)/acre per year.

- For susceptible annual and biennial broadleaf weeds, use 4 pints (1.0 lb. a.i. 2,4-D)/acre per application.

- For moderately susceptible biennial and perennial broadleaf weeds, use 4-7.4 pints (1.0-1.84 lbs. a.i. 2,4-D)/acre per application.

- For difficult to control weeds and woody plants, use 7.4 pints/acre per application.

- Spot Treatment: Do not exceed 7.4 pints (2 lbs. a.i. 2,4-D; 1.0 lb. a.e. picloram)/acre, with no more than 50% of an acre being treated.

- Spot treatments and broadcast treatments can be applied during the same growing season only if the total amount applied does not exceed 14.8 pints (1.0 lb. a.e. picloram)/acre per growing season.

- Minimum of 30 days between applications.

- If grass is to be cut for hay, Agricultural Use Requirements for the Worker Protection Standard are applicable.

- For program lands, such as Conservation Reserve Program, consult program rules to determine whether grass or hay may be used. The more restrictive requirements of the program rules or the label must be followed.

Treatment After Planting Grasses, Including Conservation Reserve Program (CRP) Acres

Perennial Grasses

Make applications of Sekor P+D to perennial grasses only after perennial grasses are well established as indicated by vigorous growth and a well-developed secondary root system.

Overseeding: Sekor P+D at rates of 1.5 pints per acre or less can be applied to permanent pastures that have been overseeded with small grains (such as barley, forage sorghum, oats, rye, ryegrass, sudangrass, or wheat) grown for pasture or hay only. Young seedling small grains or grasses are sensitive to Sekor P+D. Do not apply Sekor P+D until overseeded grasses are well established and at tillering stage of growth or later.


- Applications of Sekor P+D to established warm season grasses such as bermudagrass during initial greenup in early spring could delay or suppress emergence of new growth. If temporary suppression of new growth cannot be tolerated, application of Sekor P+D should be made prior to greenup or after vigorous vegetative growth has resumed.

- Do not use Sekor P+D if legumes are a desired cover during CRP.

- Conditions unfavorable to plant growth such as drought will increase potential for injury to grasses at all stages of growth.

- Crop Rotation: Do not rotate to grain sorghum (milo) if greater than 4 pints per acre of Sekor P+D have been applied. For rates below 4 pints per acre, do not plant grain sorghum for 8 months after application. This product is not intended for use on land planted to sweet sorghum. To avoid potential crop injury, planting of small grains should be delayed a minimum of 60 days of soil temperatures above 40°F following application except in Idaho, North Dakota, Nebraska, Montana, Oregon, South Dakota, Washington, and Wyoming, where the minimum interval should be 90 days.

- After CRP, do not plant broadleaf crops in treated acres until an adequately sensitive bioassay (described below) shows that no detectable picloram is present in the soil.

Field Bioassay Instructions: In fields previously treated with this product, plant short test rows of the intended rotational crop across the original direction of application. The test area should sample field conditions such as soil texture, soil pH, drainage, and any other variable that could affect the seedbed of the new crop. The field bioassay can be initiated at any time between harvest of the treated crop and the planting of the rotational crop. Observe the test crop for herbicidal activity such as poor stand (effect on seed germination), chlorosis (yellowing), and necrosis (dead leaves or shoots), or stunting (reduced growth). If herbicidal symptoms do not occur, the test crop can be grown. If there is apparent herbicidal activity, do not plant the field to the test rotational crop; plant only a labeled crop such as pasture grasses, small grains (barley, oats, rye, or wheat), or, after a rotational interval of 8 months, grain sorghum.

Restricted Entry Interval

48 hours