Korrex BPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

GENERAL PRECAUTIONS

Korrex B Herbicide should not be applied on or near desirable trees or plants.
Apply Korrex B Herbicide when air temperature is between 10 - 25 C. Do not apply when there is a risk of severe fall in night temperature after use.
Do not contaminate domestic or irrigation water. Thoroughly clean application equipment.
Do not treat areas where movement of the chemical into the soil or surface washing may bring Korrex B Herbicide into contact with roots of desirable plants.
Do not use additives such as oil, wetting agents, emulsifiers, detergents, spreaders, sticking agents or dispersing agents with Korrex B Herbicide on crops.
For information on feeding and grazing of beef and dairy cattle on treated vegetation and for recommendations on treatment/harvest intervals, refer to specific grazing restrictions in Directions for Use sections in the booklet label.
Ensure that spray equipment used to apply Korrex B Herbicide is properly cleaned before reusing to apply any other chemicals. See section on suggested procedure for cleaning spray equipment.

DIRECTIONS FOR USE
DO NOT apply this product directly to freshwater habitats (such as lakes, rivers, sloughs, ponds, prairie potholes, creeks, marshes, streams, reservoirs and wetlands), estuarine or marine habitats.
DO NOT contaminate irrigation or drinking water supplies or aquatic habitats by cleaning of equipment or disposal of wastes.
Surface Runoff
To reduce runoff from treated areas into aquatic habitats, consider the characteristics and conditions of the site before treatment. Site characteristics and conditions that may lead to runoff include but are not limited to heavy rainfall, moderate to steep slope, bare soil, poorly draining soil (e.g. soils that are compacted, fine textured, or low in organic matter such as clay). Potential for contamination of aquatic areas as a result of runoff may be reduced by including an untreated vegetative strip between the treat area and the edge of the water body.
Avoid applying this product when heavy rain is forecast.
Leaching
The use of the chemical may result in contamination of groundwater, particularly in areas where soils are permeable (e.g. sand, loamy sand and sandy loam soils) and/or the depth to the water table is shallow.

SPRAY DRIFT PRECAUTIONS
Korrex B Herbicide may cause injury to desirable trees and plants, particularly soybeans, flowers, fruit trees, grapes, ornamentals, pea s, potatoes, tomatoes, tobacco and other broadleaf plants especially in their developmental and growing stage.
Follow these precautions when spraying in the vicinity of sensitive crops:
1. Avoid spraying when winds are gusty or in ex cess of 8 km/h and moving toward s sensitive crops. Leave an adequate buffer zone between areas to be treated and sensitive plants.
2. Use coarse sprays since they are less likely to drift than fine sprays. Select nozzles which minimize amounts of the fine spray particles. Keep the spray pressure below 150 kPa and the spray volume above 220 L/ha unless otherwise required by the nozzle manufacturer.
3. Do not spray when the temperature is expected to exceed 30 C.
4. Avoid spraying under conditions of high humidity or fog.
SPRAY DRIFT MANAGEMENT
Field Sprayer Application
DO NOT apply during periods of dead calm. Avoid application of this product when winds are gusty. DO NOT apply with spray droplets smaller than the American Society of Agricultural Engineers (ASAE) coarse classification. Boom height must by 60 cm or less above the crop or ground.
Ground Application
Apply Korrex B Herbicide or Korrex B Herbicide tank-mixes in at least 110 litres of water/ha.
Applicators must wear a long-sleeved shirt, long pants, and chemical-resistant gloves.

Product Specific Precautions
Read and understand the entire label before opening this product. If you have questions, call the manufacturer at 1-800-667-3852 or obtain technical advice from the distributor or your provincial agricultural representative. Application of this specific product must meet and/or conform to the following:
1. Do not spray when wind velocities are greater than 15 km/hour.
2. Do not use nozzle pressure above 200 kPa.
3. Do not spray when the wind is blowing towards a nearby sensitive crop, garden, or shelterbelt.

Weeds Controlled: Tartary buckwheat, wild buckwheat, cow cockle, cleavers (higher rate only), lady's thumb, perennial sow-thistle, (top growth only) green smartweed, corn spurry, Canada thistle (top growth only)
Korrex B Herbicide Rate: Korrex B Herbicide alone at 230-290 mL/ha
Tank-Mix: none

KORREX B HERBICIDE / LIQUID NITROGEN
Pre-emergent applications of Korrex B Herbicide are generally compatible with most liquid nitrogen fertilizers. To determine compatibility, mix all components of the finished spray in proportionate quantities in a small jar before mixing in the spray tank. If the herbicides do not ball-up or form flakes, sludge, jelly, oily films or layers, or other precipitates within 5 minutes after mixing, the tested spray-mix is compatible.

Weeds Controlled: field bindweed (2), Tartary buckwheat, wild buckwheat, cleavers, cow cockle, lady’s-thumb, lamb’s-quarters (1), hare’s ear mustard, Indian mustard,  tumble mustard, wild mustard,  wormseed mustard, pigweed, redroot pigweed (1), Russian pigweed, common ragweed (1), false ragweed,  giant ragweed, perennial sow-thistle (2), corn spurry, green smartweed, Canada thistle (2), velvetleaf

Korrex B Herbicide Rate: Korrex B Herbicide alone at 600 mL - 1.25 L/ha
Tank-Mix: none

(1) Including atrazine-resistant species.
(2) Apply Korrex B Herbicide annually for three years at the flowering stage of bindweed and the budding stage of thistles.

WEED CONTROL IN REDUCED TILLAGE (PRIOR TO SEEDING CEREALS)

Treatment notes
1. Korrex B Herbicide + glyphosate (3) applications may be applied to emerged annual grass and annual broadleaf weeds in reduced tillage systems prior to seeding of wheat, barley, rye and oats.
2. Planting should follow soon after application since this tank-mix does not provide residual weed control.
3. Delayed planting following chemical application will allow weeds to emerge between application and crop emergence.
4. Certain broadleaf crops such as sweet corn, lentils, peas, canola and flax can be injured by a pre-seeding application of this tank-mix and should not be planted after the use of this tank-mix.
5. Under certain stress conditions, such as drought, cool temperatures where extremely hard (>700ppm CA+ Mg) water will be used, use 50 L/ha of water with this tank-mix to help improve results.

Weeds Controlled: Annual grasses (Apply any time between emergence and heading) downy brome, volunteer cereals, Persian darnel, green foxtail, wild oats
Korrex B Herbicide Rate: Korrex B Herbicide at 315 mL/ha +

Weeds Controlled: Annual broadleaves (Apply up to 15 cm height) wild buckwheat (1), volunteer canola, cow cockle, flixweed (2), kochia, lady’s-thumb, lamb’s-quarters, wild mustard, redroot pigweed, smartweed, stinkweed (2), Russian thistle, 
Korrex B Herbicide Rate: Korrex B Herbicide at 315 mL/ha +

Weeds Controlled: Perennials (Apply before initiation of seed head or browning of lower leaves) barley, foxtail (suppression only)
Korrex B Herbicide Rate: Korrex B Herbicide at 315 mL/ha +

Rate of glyphosate†: 
For an application rate of 333 g ai/ha apply:
620 mL/ha (540 g ae/L)
665 mL/ha (500 g ae/L)
695 mL/ha (480 g ae/L)
740 mL/ha (450 g ae/L)
925 mL/ha (360 g ae/L)
+
0.5 L of a non-ionic surfactant
Use water volume of 100 L/ha

(1) Apply to the 1 to 4-leaf stage.
(2) For optimal control of winter annual broadleaf weeds such as flixweed and stinkweed, 2,4-D should be applied to emerged, actively growing weeds in the fall the year prior to the Korrex B Herbicide
+ glyphosate spring pre-seeding tank-mix.
Refer to the 2,4- D product label for appropriate rates.
(3) The product application rate is dependent upon the guarantee of the product. Refer to glyphosate product label for further information on weeds controlled, directions for use, restrictions and precautionary label statements Only use glyphosate products registered for reduced or minimum tillage systems.

WEED CONTROL IN REDUCED TILLAGE FALLOW

Treatment notes
1. Apply Korrex B Herbicide tank-mixes in the spring to fallow land when seedling weeds have emerged, and are actively growing at the 2 to 4-leaf stage.
2. Reduced control may occur if applications are made at an advanced stage of weed development.
Applicators must wear a long-sleeved shirt, long pants, and chemical-resistant gloves.

RE-ENTRY INTERVAL: DO NOT enter treated field until 12 hours after application.

DO NOT APPLY BY AIR.

Weeds Controlled: foxtail barley (2), wild buckwheat (2), volunteer cereals, cow cockle, flixweed (1), green foxtail, kochia, lady’s-thumb, lamb’s-quarters, wild mustard, wild oats, redroot pigweed (2), volunteer  canola, stinkweed, Russian thistle

Korrex B Herbicide Rate: 290 mL/ha +

Weeds Controlled: wild buckwheat
Korrex B Herbicide Rate: 600 mL/ha +

Tank-Mix: 
For an application rate of 267- 356 g ai/ha glyphosate (3) apply:
495 mL - 660 mL/ha (540 g ae/L)
535 mL - 712 mL/ha (500 g ae/L)
555 mL - 743 mL/ha (480 g ae/L)
600 mL - 790 mL/ha (450 g ae/L)
740 mL - 990 mL/ha (360 g ae/L)
+
350 mL of non-ionic surfactant
Use water volumes of 50 to 100 L/ha
(1) For control of flixweed use the higher rate of glyphosate
(2) Suppression only.
(3) The product application rate is dependent upon the guarantee of the product. Refer to glyphosate product label for further information on weeds controlled, directions for use, restrictions and precautionary label statements.Only use glyphosate products registered for reduced tillage systems.

Korrex B Herbicide/glyphosate application notes
1. These tank-mixes should be applied to emerged actively growing annual weeds from 8-15 cm in height.
2. Use the higher rate of glyphosate when weeds are at a more advanced stage of growth.
3. For perennial weed control, refer to the appropriate section of this label for proper stages of growth and recommended stages of application.
4. Reduced control may occur if muddy water is used, such as water from dug-outs, ponds and unlined ditches.

PERENNIAL WEED CONTROL IN SUMMERFALLOW AND STUBBLE

Treatment notes
1. Apply Korrex B Herbicide in 110-220 litres of water/ha.
2. For the most effective control of Canada thistle, follow a long-term approach that includes in- crop, post-harvest, and summer fallow treatments, in conjunction with tillage operations.
3. If application is made after September 1st, or if soil moisture levels are extremely low after application, crop injury may occur in the spring following application.
Applicators must wear a long-sleeved shirt, long pants, and chemical-resistant gloves.

RE-ENTRY INTERVAL: DO NOT enter treated field until 12 hours after application.

DO NOT APPLY BY AIR
Weeds Controlled: English daisy, curled dock (top growth),goldenrod, tansy ragwort, perennial sow thistle, Canada thistle
Rate: Korrex B Herbicide alone at 2.5 L/ha
Recropping in year following: cereals, soybeans, field corn, white beans, sweet corn

Weeds Controlled: Canada thistle, perennial sow-thistle
Rate: Korrex B Herbicide at 1.25 L/ha + glyphosate† at 605 g ai/ha + 350 mL of a non-ionic surfactant per 100 L of water
Recropping in year following: All of the above plus canola
†The product application rate is dependent upon the guarantee of the product. Refer to glyphosate product label for further information on weeds controlled, directions for use, restrictions and precautionary label statements.Only use glyphosate products registered for summerfallow and stubble.

Application Directions

Summer fallow treatment notes

1. Cultivate in the spring and apply Korrex B Herbicide when:
Weed: thistles
Weed Stage: the majority of thistles are up and before the early bud stage (15-25 cm tall)
Weed: field bindweed
Weed Stage: in the flowering stage
Weed: other weeds
Weed Stage: in the early bud stage of growth

2. Cultivate three weeks after application.
Stubble treatment notes
1. Apply to regrowth after harvest and at least 2 weeks prior to a killing frost.

Perennial rosette control in summerfallow

Treatment notes
1. For the most effective control of Canada thistle, follow a long-term approach that includes in-crop, post-harvest, and summerfallow treatments, in conjunction with tillage operations.
2. Commence early spring cultivation and continue as required throughout the summer. Note: The final cultivation must occur by the end of July between July 15 - August 1 and the final cultivation should cut the thistle off 5 to 7.5 cm below the soil surface.
3. Spray in 110-220 L of water/ha when the majority of thistles have emerged as low growing rosettes 15 to 25 cm across.
4. Apply at least two weeks prior to a killing frost.
BUFFER ZONES
5. Cultivate three weeks after application.

DO NOT APPLY BY AIR.

Weeds Controlled: Canada thistle
Rate: 1.25 L/ha
Recropping in year following: cereals, field corn, white beans, canola, soybeans

Use of the following spray methods or equipment DOES NOT require a buffer zone: hand-held or backpack sprayer, spot treatment, inter-row hooded sprayer, soil drench and soil incorporation.
The buffer zones specified in the tables below are required between the point of direct application and the closest downwind edge of sensitive terrestrial habitats (such as grasslands, forested areas, shelter belts, woodlots, hedgerows, riparian areas and shrublands), sensitive freshwater habitats (such as lakes, rivers, sloughs, ponds, prairie potholes, creeks, marshes, streams, reservoirs and wetlands) and estuarine/marine habitats.

Buffer Zones for Uses in Agriculture Using ASAE Coarse Applications

Method of Application: Field sprayer
Crop: Barley, oats, rye, wheat, (cereals)
Buffer zones (metres) Required for the Protection of:
Freshwater habitats of depths:
Less than 1 m: 0
Greater than 1 m: 0
Estuarine/marine habitats of depths:
Less than 1 m: 0
Greater than 1 m: 0
Terrestrial habitat: 1
Crop: Stubble fields, fallow land
Buffer zones (metres) Required for the Protection of:
Freshwater habitats of depths:
Less than 1 m: 1
Greater than 1 m: 1
Estuarine/marine habitats of depths:
Less than 1 m: 0
Greater than 1 m: 0
Terrestrial habitat: 5

When a tank mixture is used, consult the labels of the tank-mix partners and observe the largest (most restrictive) buffer zone of the products involved in the tank mixture.
For tank mixes, consult the labels of the tank-mix partners and observe the largest (most restrictive) buffer zone of the products involved in the tank mixture and apply using the coarsest spray (ASAE) category indicated on the labels for those tank mix partners.

RESISTANCE MANAGEMENT RECOMMENDATIONS
For resistance management, Korrex B Herbicide is a Group 4 herbicide. Any weed population may contain or develop plants naturally resistant to Korrex B Herbicide and other Group 4 herbicides. The resistant biotypes may dominate the weed population if these herbicides are used repeatedly in the same field. Other resistance mechanisms that are not linked to site of action, but specific for individual chemicals, such as enhanced metabolism, may also exist. Appropriate resistance management strategies should be followed.
To delay herbicide resistance:
Where possible, rotate the use of Korrex B or other Group 4 herbicides within a growing season (sequence) or among growing seasons with different herbicide groups that control the same weeds in a field.
Use tank mixtures with herbicides from a different group when such use is permitted. To delay resistance, the less resistance-prone partner should control the target weed(s) as effectively as the more resistance-prone partner.
Herbicide use should be based on an integrated weed management program that includes scouting, historical information related to herbicide use and crop rotation, and considers tillage (or other mechanical control methods), cultural (for example, higher crop seeding rates; precision fertilizer application method and timing to favour the crop and not the weeds), biological (weed-competitive crops or varieties) and other management practices.
Monitor weed populations after herbicide application for signs of resistance development (for example, only one weed species on the herbicide label not controlled). If resistance is suspected, prevent weed seed production in the affected area if possible by an alternative herbicide from a different group. Prevent movement of resistant weed seeds to other fields by cleaning harvesting and tillage equipment when moving between fields, and planting clean seed.
Have suspected resistant weed seeds tested by a qualified laboratory to confirm resistance and identify alternative herbicide options.
Contact your local extension specialist or certified crop advisors for any additional pesticide resistance-management and/or integrated weed-management recommendations for specific crops and weed biotypes.

NOTICE TO USER: This pest control product is to be used only in accordance with the directions on the label. It is an offence under the Pest Control Products Act to use this product in a way that is inconsistent with the directions on the label. The user assumes the risk to persons or property that arises from any such use of this product.