Agrobase Canada
MCPA Ester 500 LV Registration expired
NUFARM - Herbicide
27054

GENERAL INSTRUCTIONS - CROP USE
Do not permit lactating dairy animals to graze fields within 7 days after application. Withdraw meat animals from treated fields at least 3 days before slaughter. Do not harvest forage or cut hay within 7 days after application. 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 be 60 cm or less above the crop or ground. Aerial application: DO NOT apply during periods of dead calm. Avoid application of this product when winds are gusty. DO NOT apply when wind speed is greater than 16 km/h at flying height at the site of application. DO NOT apply with spray droplets smaller than the American Society of Agricultural Engineers (ASAE) coarse classification. To reduce drift caused by turbulent wingtip vortices, the nozzle distributions along the spray boom length MUST NOT exceed 65% of the wingspan or rotorspan.

Buffer Zones 
Use of the following spray methods or equipment DO NOT require a buffer zone: handheld or backpack sprayer and spot treatment. The buffer zones specified in the table 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, rangelands, 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. 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.

Ground Application: 
Apply 50 to 200 L of spray solution per hectare depending on the type of application equipment used. Use sufficient water for even distribution. Spray at low pressures (200 to 275 kPa) when the weeds are actively growing.

Aerial Application (including fixed and rotary wing aircraft): 
Apply a minimum of 30 L of spray solution per hectare depending on the type of application system being used. Use boom pressures of 235 kPa or less. Avoid placing nozzles where spray will enter wing tip vortices.

To Prepare A Spray: 
Add half the required amount of water or oil to the spray tank, then add with agitation the required amount of product as shown for the different uses, and finally the balance of the water or oil with continued agitation. Provide agitation to ensure uniformity of spray mixture.  

Spot Treatment: 
For knapsack applications for spot treatment of weeds such as thistles, mix 200 mL of product in 10 L of water. Wet all foliage thoroughly.

Selective Weed Control in Small Grains: 
Do not use on grain interplanted with a legume. Weeds differ in their susceptibility to Nufarm MCPA Ester 500 LV Liquid Herbicide and not all types can be controlled satisfactorily in crops. The amount of product to use will depend upon the susceptibility and whether the crops will tolerate this amount. See Table 1. DO NOT exceed the rate given for each specific crop identified in the Crop Use section.

Oats: 
Oats are more tolerant to MCPA than 2,4-D. Spray when conditions of weeds warrant up to the flag-leaf stage (shot blade). Do not apply more than one treatment per year.

Wheat, Barley and Rye: 
Nufarm MCPA Ester 500 LV Liquid Herbicide is used for the control of susceptible weeds in wheat, barley and rye. Treatments can be made from the 3-leaf expanded to the early flag-leaf stage. Treatments made between emergence and 3-leaf stage may cause some crop injury, but are less likely to with MCPA esters than with 2,4-D esters. Winter wheat and fall rye should be treated in early spring, as soon as weeds appear and when the crop is in full tillering stage to the shot-blade stage. Do not apply more than one treatment per year.

Flax (linseed) (Do not use on low linolenic acid varieties): 
Treat flax with Nufarm MCPA Ester 500 LV Liquid Herbicide when flax is 5 cm tall to just before the buds begin to form. When weeds resistant to MCPA are present, use 2,4-D Amine 500 herbicide; however, some crop injury to the flax should be expected. Rates of Nufarm MCPA Ester 500 LV Liquid Herbicide over 1.1 L/ha may cause a delay in maturity which is usually more than offset by increased yield caused by weed control. Do not apply more than one treatment per year. Asparagus: Treat asparagus with Nufarm MCPA Ester 500 LV Liquid Herbicide following a cultivation just before the first spears appear. Use 3.5 L/ha. Treatment may be repeated at the end of the cutting season. Do not apply more than two treatments per year, with a minimum retreatment interval of 21 days.

Established Grasses - Eastern Canada: 
For the control of yellow rocket and other susceptible winter annual weeds, spray with 2 L of Nufarm MCPA Ester 500 LV Liquid Herbicide /ha. Application should be made in early fall. Do not apply more than two treatments per year, with a minimum retreatment interval of 90 days.

Established Alfalfa and Grasses - Western Canada: 
To control such susceptible weeds as horsetail, hoary cress, shepherd’s-purse and other perennials or winter annuals, spray with Nufarm MCPA Ester 500 LV Liquid Herbicide at 1.1 to 2.0 L/ha before growth of legumes and grasses starts in the spring. Do not apply more than two treatments per year, with a minimum retreatment interval of 90 days.

Rangeland and Grass Pasture: 
To control susceptible weeds use 1.5 to 2.75 L/ha in enough water for coverage. Do not apply more than two treatments per year, with a minimum retreatment interval of 90 days.

USE PRECAUTIONS:
WARNING FOR AERIAL APPLICATION
Do not spray when winds exceed 16 kmph. Do not spray in dead calm near sensitive plants. The “cloud” of suspended droplets may drift onto sensitive plants when the wind comes up. Spray only when wind is blowing away from a sensitive crop, shelterbelt or garden.

Directions for Use: 
Apply only by fixed-wing or rotary aircraft equipment which has been functionally and operationally calibrated for the atmospheric conditions of the area and the application rates and conditions of this label. Label rates, conditions and precautions are product specific. Read and understand the entire label before opening this product. Apply only at the rate recommended for aerial application on this label. Where no rate for aerial application appears for the specific use, this product cannot be applied by any type of aerial equipment. Ensure uniform application. To avoid streaked, uneven or overlapped application, use appropriate marking devices. No human flaggers are permitted.

Use Precautions: 
Apply only when meteorological conditions at the treatment site allow for complete and even crop coverage. Apply only under conditions of good practice specific to aerial application as outlined in the National Aerial Pesticide Application Manual, developed by the Federal/Provincial/Territorial Committee on Pest Management and Pesticides. Do not apply to any body of water. Avoid drifting of spray onto any body of water or other nontarget areas. Specified buffer zones should be observed. Coarse sprays are less likely to drift, therefore, avoid combinations of pressure and nozzle type that will result in fine particles (mist). Do not apply during periods of dead calm or when wind velocity and direction pose a risk of spray drift. Do not spray when the wind is blowing towards a nearby sensitive crop, garden, terrestrial habitat (such as shelter-belt) or aquatic habitat.

Operator Precautions: 
Do not allow the pilot to mix chemicals to be loaded onto the aircraft. Mixer/loader and applicator must be different individuals. Aircraft must be closed cab. Loading of premixed chemicals with a closed system is permitted. It is desirable that the pilot have communication capabilities at each treatment site at the time of application. The field crew and the mixer/loaders must wear long-sleeved shirt, long pants and coveralls, chemical resistant gloves and goggles or face shield during mixing/loading, cleanup and repair. Follow the more stringent label precautions in cases where the operator precautions exceed the generic label recommendations on the existing ground boom label. All personnel on the job site must wash hands and face thoroughly before eating and drinking. Protective clothing, aircraft cockpit and vehicle cabs must be decontaminated regularly.

Product Specific Precautions: 
Read and understand the entire label before opening this product. If you have questions, call the manufacturer at 1-800-868-5444 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: 

Volume: Apply the recommended rate in a minimum spray volume of 30 litres per hectare.

Sensitive Plants: 
Vegetables, flowers, grapes, fruit trees and other desirable plants are sensitive to MCPA even in minute quantities. Care should be taken to avoid spraying these types of plants or allowing spray mist to drift onto these plants during both their growing and dormant periods. Coarse sprays are less likely to drift. At higher temperatures, vaporization may cause injury to susceptible plants growing nearby. This product may cause damage to lawns or pastures if applied before the grass is well established. In addition, most legumes may be damaged or killed.

NOTE: Local conditions may affect the use of herbicides. Provincial agricultural authorities issue recommendations to fit local conditions. Be sure that use of this product conforms to all applicable regulations. If this product is exposed to temperatures below -20 C, it should be warmed to at least 5.0 C and mixed thoroughly before using.

DIRECTIONS FOR USE: 
DO NOT enter or allow worker entry into treated areas during the restricted-entry interval (REI) of 12 hours.

RESISTANCE-MANAGEMENT RECOMMENDATIONS 
For resistance management, Nufarm MCPA Ester 500 LV Liquid Herbicide is a Group 4 herbicide. Any weed population may contain or develop plants naturally resistant to Nufarm MCPA Ester 500 LV Liquid 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 Nufarm MCPA Ester 500 LV Liquid Herbicide or other Group 4 herbicides 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.
Herbicide use should be based on an IPM program that includes scouting, historical information related to herbicide use and crop rotation, and considers tillage (or other mechanical), cultural, biological and other chemical control practices.
Monitor treated weed populations for resistance development.
Prevent movement of resistant weed seeds to other fields by cleaning harvesting and tillage equipment and planting clean seed.
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.
For further information or to report suspected resistance, contact Nufarm Agriculture Inc. at 1-800-868-5444 or at www.nufarm.ca.

Effective
Crops
Spring oats
BBCH
0 - 0
Registred norm
0.7 - 1.75
Preharvest Interval
7
Crops
Winter oats
BBCH
0 - 0
Registred norm
0.7 - 1.75
Preharvest Interval
7
Crops
Winter wheat
BBCH
0 - 0
Registred norm
0.7 - 1.75
Preharvest Interval
7
Crops
Spring wheat
BBCH
0 - 0
Registred norm
0.7 - 1.75
Preharvest Interval
7
Crops
Spring barley
BBCH
0 - 0
Registred norm
0.7 - 1.75
Preharvest Interval
7
Crops
Winter barley
BBCH
0 - 0
Registred norm
0.7 - 1.75
Preharvest Interval
7
Crops
Winter rye
BBCH
0 - 0
Registred norm
0.7 - 1.75
Preharvest Interval
7
Crops
Spring rye
BBCH
0 - 0
Registred norm
0.7 - 1.75
Preharvest Interval
7
Crops
Winter linseed, flax
BBCH
0 - 0
Registred norm
0.7 - 1.1
Preharvest Interval
7
Crops
Spring linseed, flax
BBCH
0 - 0
Registred norm
0.7 - 1.1
Preharvest Interval
7
Crops
Asparagus
BBCH
0 - 0
Registred norm
3.5 - 3.5
Preharvest Interval
7
Crops
Pasture
BBCH
0 - 0
Registred norm
1.5 - 2.75
Preharvest Interval
7
Effective
Ball mustard
Ball mustard
Neslia paniculata ★★★
Black mustard
Black mustard
Brassica nigra ★★★
Calepina
Calepina
Calepina irregularis ★★★
Cocklebur
Cocklebur
Xanthium strumarium ★★★
Common burdock
Common burdock
Arctium minus ★★★
Common ragweed
Common ragweed
Ambrosia artemisiifolia ★★★
Fat hen
Fat hen
Chenopodium album ★★★
Field mustard
Field mustard
Brassica campestris ★★★
Field penny-cress
Field penny-cress
Thlaspi arvense ★★★
Flixweed
Flixweed
Descurainia sophia ★★★
Hare's ear mustard
Hare's ear mustard
Conringia orientalis ★★★
Hedge mustard
Hedge mustard
Sisymbrium officinale ★★★
Hoary cress
Hoary cress
Lepidium draba ★★★
Indian hedge mustard
Indian hedge mustard
Sisymbrium orientale ★★★
Kochia
Kochia
Bassia scoparia ★★★
Plantain
Plantain
Musa paradisiaca ★★★
Prickly lettuce
Prickly lettuce
Lactuca serriola ★★★
Russian pigweed
Russian pigweed
Axyris amaranthoides ★★★
Shepherd's purse
Shepherd's purse
Capsella bursa-pastoris ★★★
Sunflowers
Sunflowers
Helianthus ★★★
Tumble mustard
Tumble mustard
Sisymbrium altissimum ★★★
Vetches
Vetches
Vicia ★★★
White mustard
White mustard
Sinapis alba ★★★
Wild mustard, charlock
Wild mustard, charlock
Sinapis arvensis ★★★
Wild radish
Wild radish
Raphanus raphanistrum ★★★
Wormseed mustard
Wormseed mustard
Erysimum cheiranthoides ★★★
Biennial wormwood
Biennial wormwood
Artemisia biennis ★★
Blue lettuce
Blue lettuce
Lactuca tatarica ★★
Bokhara
Bokhara
Melilotus albus ★★
Canada thistle
Canada thistle
Cirsium arvense ★★
Common dandelion
Common dandelion
Taraxacum officinale ★★
Common hempnettle
Common hempnettle
Galeopsis tetrahit ★★
Dog mustard
Dog mustard
Erucastrum gallicum ★★
European bindweed
European bindweed
Convolvulus arvensis ★★
European stickseed
European stickseed
Lappula squarrosa ★★
Field horsetail
Field horsetail
Equisetum arvense ★★
Goat’s-beard
Goat’s-beard
Aruncus dioicus ★★
Grindelia
Grindelia
Grindelia camporum ★★
Hairy galinsoga
Hairy galinsoga
Galinsoga quadriradiata ★★
Hedge bindweed
Hedge bindweed
Calystegia sepium ★★
Oak-leaved goosefoot
Oak-leaved goosefoot
Chenopodium glaucum ★★
Pepper grass
Pepper grass
Panicum whitei ★★
Perennial sow thistle
Perennial sow thistle
Sonchus arvensis ★★
Redroot pigweed
Redroot pigweed
Amaranthus retroflexus ★★
Russian thistle
Russian thistle
Salsola kali ★★
Smartweed
Smartweed
Polygonum hydropiper ★★
Sowthistle
Sowthistle
Sonchus spp. ★★
Tansy mustard
Tansy mustard
Descurainia pinnata ★★
Tartary buckwheat
Tartary buckwheat
Fagopyrum tataricum ★★