Water Dispersible Granule for Post-Emergent Control of Quackgrass and many Broadleaf Weeds in Field Corn in Eastern Canada
FOR SALE FOR USE IN EASTERN CANADA ONLY
DO NOT APPLY BY AIR.
DO NOT MAKE MORE THAN ONE APPLICATION PER YEAR.
Keep in original packaging during storage. Store in a dry, well-ventilated area away from other pesticides, fertilizers, food or feed.
DECONTAMINATION AND DISPOSAL
For information on disposal of unused, unwanted product, contact the manufacturer or the provincial regulatory agency. Contact the manufacturer and the provincial regulatory agency in case of a spill, and for clean-up of spills.
CONTAINER DISPOSAL OR REFILLING:
Do not reuse this container for any purpose. This is a recyclable container, and is to be disposed of at a container collection site. Contact your local distributor/dealer or municipality for the location of the nearest collection site. Before taking the container to the collection site:
1. Triple- or pressure-rinse the empty container. Add the rinsings to the spray mixture in the tank.
2. Make the empty, rinsed container unsuitable for further use.
If there is no container collection site in your area, dispose of the container in accordance with provincial requirements.
SUMMIT WG Herbicide is a selective herbicide for use in Eastern Canada only that is applied after emergence of both corn and weeds for the control of quackgrass, lamb’s quarters, redroot pigweed, velvetleaf and ragweed. Application should be made using ground application equipment to young, actively growing weeds.
The level of weed control following SUMMIT WG Herbicide application is dependent upon weed size at application and growing conditions. Warm, moist conditions following application promote the activity of SUMMIT WG Herbicide, while cool and/or dry soil conditions may reduce or delay activity as weeds are under stress.
SUMMIT WG Herbicide should be applied only when the temperature in the 24 hours before and after application ranges between 5 C and 28 C. Temperatures beyond this range may increase the potential for crop injury.
Thorough coverage of the emerged weeds is essential for effective control with SUMMIT WG Herbicide. Ensure that the boom is set at the proper height in relation to the corn plants to apply SUMMIT WG Herbicide accurately and uniformly, avoiding excessive application into the corn whorl. Growth of susceptible weeds is inhibited following application of SUMMIT WG Herbicide. The leaves turn yellow and/or red after several days followed by death of the growing point. In addition, broadleaf weeds exhibit stem and leaf twisting and bending. Complete death occurs 7- 30 days after application, depending upon species and environmental conditions. Weeds not completely killed are often stunted and are less competitive to corn. SUMMIT WG Herbicide reaching the soil during a post-emergent application may provide pre-emergent control of certain late emerging weeds.
SUMMIT WG Herbicide application at labelled rates rarely causes corn injury. When injury occurs, it is generally of short duration and yields are not affected. Crop injury may occur if application is made to corn that has been stressed by abnormally hot, humid or cold weather conditions, frost, low fertility, drought, water saturated soil, compacted soil, previous pesticide applications, disease or insect damage. If corn has been injured by frost, wait 48-72 hours before applying SUMMIT WG Herbicide.
Certain other crops may be sensitive to low concentrations of SUMMIT WG Herbicide in the soil. Therefore, careful consideration should be given to crop rotation plans prior to using SUMMIT WG Herbicide (refer to "RECROPPING GUIDELINES").
SUMMIT WG Herbicide provides selective weed control in hybrid and silage corn. Do not use on seed corn, sweet corn or popcorn.
Corn Hybrid Sensitivity:
Corn hybrids with corn-heat unit (CHU) ratings of 2500 or less may show some sensitivity to SUMMIT WG Herbicide. DO NOT use SUMMIT WG Herbicide on corn hybrids with CHU ratings of 2500 or less average seasonal corn heat units or in areas with seasonal corn heat unit ratings of 2500 or less.
Corn hybrids of 2500 CHU or greater that have shown considerable crop injury from application of SUMMIT WG Herbicide are listed below. SUMMIT WG Herbicide should not be used for weed control in fields planted with these hybrids:
DIRECTIONS FOR USE
DO NOT apply during periods of dead calm. Avoid application of this product when winds are gusty or in excess of 8 km/h and moving in the direction of adjacent sensitive crops. 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.
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 or rinsing of equipment or containers or disposal of wastes.
Apply SUMMIT WG Herbicide, plus a recommended adjuvant (See MIXING AND SPRAYING INSTRUCTIONS), as a broadcast treatment over-the-top, at a rate of 350 g per hectare when corn is in the 2 to 7 leaf stage (10 – 30 cm tall).
Do not apply SUMMIT WG Herbicide over-the-top to corn which is taller than 30 cm.
MIXING AND SPRAYING INSTRUCTIONS
GROUND APPLICATION ONLY:
WATER VOLUME: Minimum of 150 litres per hectare.
SPRAY PRESSURE: 200 - 300 kPa
SPRAY NOZZLES: Flat Fan with 50 mesh or larger screens. For uniform coverage and increased penetration of the crop canopy, set the nozzles at a downward angle of 90 degrees.
SURFACTANT: SUMMIT WG Herbicide must be applied with a recommended non-ionic surfactant such as AGRAL 90, Ag-Surf or Citowett Plus at 0.20% v/v (2.0 L for each 1000 L of spray mixture).
1. Fill sprayer 1/2 full of clean water. Start gentle agitation. Make certain that the agitation system creates a rippling or rolling action on the water’s surface. Maintain agitation throughout the mixing and spraying process.
2. Add the required amount of SUMMIT WG Herbicide and allow to fully disperse. Add the required amount of ACCENT 75DF herbicide if using as a tank mix and allow to fully disperse.
3. Agitate an additional 2 – 3 minutes and then add a recommended non-ionic surfactant.
4. Top off tank with water, maintain agitation and spray.
5. Do not let stand without agitation.
6. Do not use liquid fertilizer as the spray carrier.
Certain crops have been shown to be sensitive to residues of SUMMIT WG Herbicide in the soil. The minimum recropping interval is the time between the last application of SUMMIT WG Herbicide and the anticipated date of planting of the next crop.
To avoid injury to subsequent crops after an application at the recommended rate of SUMMIT WG Herbicide, the following recropping intervals should be observed.
CROP - MINIMAL INTERVAL (MONTHS)
Field Corn (excluding NKG-4034, NKG- 4120, NKG-4160, Pioneer 3897) - 10
Soybean, White Bean, Kidney Bean, Alfalfa - 11
All Other Crops - Field Bioassay
Land treated with SUMMIT WG HERBICIDE CAN ONLY BE PLANTED TO A CROP NOT LISTED IN THE PRECEEDING TABLE if a field bioassay can be successfully performed. The bioassay must indicate normal growth with no yield reductions.
When conducting a field bioassay, it is very important to select a representative area(s) of the field previously treated with SUMMIT WG Herbicide to plant the test crop(s).
1. Representative Sample:
Ensure that soil parameters such as soil texture, depth of top soil layer, soil pH and drainage of the test area selected are representative of the remainder of the field.
2. Sample Size:
The seeded area of each selected bioassay crop must be large enough to ensure that reliable results are obtained. The seedbed preparations and seeding of the bioassay crop(s) should be conducted the same way as when the entire field would be planted.
3. Other Residual Herbicides:
It is important that other herbicide products which are known to have residual activity were not applied to the field between the last application of SUMMIT WG Herbicide and the bioassay testing period. Avoid the use of other pesticides during the duration of the bioassay as they may damage the indicator crop(s).
Ideally, an untreated check strip in a neighbouring field should be established and monitored for comparison since growing conditions can vary greatly from year to year and may result in erroneous results.
The site should be monitored regularly throughout the growing season. Watch for any damage to the crop such as thinning, yellowing or stunting. A yield sample should be taken and compared to an adjacent untreated field.
DO NOT ROTATE TO OTHER CROPS UNTIL THE BIOASSAY INDICATES NORMAL GROWTH WITH NO YIELD REDUCTIONS.
Failure to follow these recropping guidelines could result in injury to seeded crop(s).
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