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SPIKE HERBICIDE provides control of certain broad-leaved weeds in spring planted wheat (including durum), barley and summerfallow.
Warm, moist growing conditions promote active weed growth and enhance the activity of SPIKE HERBICIDE by allowing maximum foliar uptake and contact activity. Weeds hardened off by environmental stress such as cold weather, drought stress or excessive heat may not be adequately controlled or suppressed, and regrowth may occur.
SPIKE HERBICIDE may only be applied using ground spray equipment. For best results, ensure thorough spray coverage of target weeds. SPIKE HERBICIDE rapidly stops growth of susceptible weeds. However, typical symptoms (discolouration) of dying weeds may not be noticeable for 1 to 3 weeks after application, depending on growing conditions and weed susceptibility. Degree of control and duration of effect depend on weed sensitivity, weed size, spray coverage and growing conditions. Activity of the herbicide mixture may be delayed by cold, dry conditions after application.

Apply SPIKE HERBICIDE at 10 g/ha with 2,4-D Ester at 420 g/ha (0.6 L 2,4-D Ester LV-700). AGRAL 90 is not required in this tank mix. Apply the tank mix in the spring after emergence, up to the early flowering stage of the target weeds. Only weeds that have emerged at the time of application will be controlled.

Fields treated with SPIKE HERBICIDE can be seeded to spring wheat (including durum) or barley a minimum of 24 hours after application.  Apply SPIKE HERBICIDE at 10 grams per hectare, tank mixed with one of the following companion herbicides and adjuvant (where required) in a total spray volume of 55-110 L/ha. Consult the labels of the glyphosate products to be used as tankmix partners with SPIKE HERBICIDE for specific instructions of “Directions for Use” and restrictions. With summerfallow treatment, allow at least 10 days to elapse before tillage. Only weeds emerged at time of application will be controlled.

1. Add one-third of the necessary volume of water to the spray tank.
2. With the agitator running, add the required amount of SPIKE HERBICIDE.
3. When SPIKE HERBICIDE is in suspension, add the required amount of the appropriate tank mix partners.
4. Specific Tank Mix Instructions: SPIKE HERBICIDE + 2,4-D Ester: once SPIKE HERBICIDE is completely in suspension, add the required amount of 2,4-D Ester while maintaining agitation. Do not add a surfactant. SPIKE HERBICIDE + Glyphosate: once SPIKE HERBICIDE is completely in suspension, add the required amount of glyphosate while maintaining agitation. Once components are completely mixed, if required, add Agral 90 at 3.5 L per 1000 L of spray solution (0.35% v/v)
5. Add the rest of the water. If an antifoam agent is required, add this last.
6. Use a minimum spray volume of 55 L/ha on spring wheat (including durum), barley and summerfallow.
7. For repeat tankloads, reduce the material remaining in the tank to 10% of the original volume or less before proceeding with step 1. If this is not possible, pre-slurry SPIKE HERBICIDE in a small amount (5- 10 L) of water before adding to the tank. Continuous agitation is required to keep SPIKE HERBICIDE in suspension. If the spray preparation is left standing without agitation, thoroughly agitate to resuspend the mixture before spraying. Use spray preparation within 24 hours or product degradation may occur.

A minimum recrop interval of 2 months should be left between the application of this product and seeding of the next crop. The following crops can be seeded two months after application of SPIKE HERBICIDE + 2,4-D Ester: canola, flax, lentils, and alfalfa.

Apply the spray mixture uniformly with properly calibrated ground equipment only. Ensure thorough coverage and a uniform spray pattern. Flat fan nozzles are recommended (minimum 55 litres spray volume per hectare). Use 50 mesh filter screens or larger (metal or nylon). Continuous agitation is required to keep the spray materials in suspension. Apply uniformly and avoid overlapping. Shut off spray boom while starting, turning, slowing or stopping to prevent crop injury from over application. Reduce drift with high water volume, low pressure, coarse sprays and drop nozzles. Do not apply with more than 275 kPa spray pressure. DO NOT APPLY BY AIR. 

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) medium classification. Boom height must be 60 cm or less above the crop or ground.

Buffer Zones: 
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 (grasslands, forested areas, shelter belts, woodlots, hedgerows, riparian areas and shrublands), sensitive freshwater habitats (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.

It is difficult to remove all traces of 2,4-D Ester and MCPA Amine from a sprayer. A sprayer used to apply these herbicides should not be used to spray crops sensitive to these herbicides. The following clean-out procedure will remove traces of SPIKE HERBICIDE from the sprayer.
1. Drain tank; then flush tank, boom and hoses with clean water for a minimum of ten minutes to remove all visible residues.
2. Fill the tank with clean water then add 1 litre household AMMONIA (containing a minimum of 3% ammonia) per 100 litres of water. Fill boom and hoses with solution and allow sprayer to sit for 15 minutes. Drain.
3. Repeat step 2.
4. Nozzles and screens should be removed and cleaned separately. To remove traces of ammonia, rinse the tank, hoses and booms thoroughly with clean water.
5. Dispose of tank rinseate according to Provincial directions. CAUTION: Do not use ammonia with chlorine bleach. Using ammonia with chlorine bleach will release a gas with a musty chlorine odour that can cause eye, nose, throat, and lung irritation. Do not clean equipment in an enclosed area.

For resistance management, SPIKE HERBICIDE is a Group 2 herbicide. Any weed population may contain or develop plants naturally resistant to SPIKE HERBICIDE and other Group 2 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 used of S PIKE HERBICIDE or other Group 2 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 resistancemanagement and/or integrated weed-management recommendations for specific crops and weed biotypes.

Licensed wheat and barley varieties have shown acceptable tolerance to SPIKE HERBICIDE. Consult Nufarm Agriculture Inc. prior to use on unlicensed varieties for crop tolerance information. Do not apply to irrigated land where tail water will be used to irrigate other cropland. Do not contaminate irrigation water. Do not use on highly variable soils that have large gravely or sandy areas, eroded knolls or calcium deposits. 
If rain occurs soon after application control may be reduced. At least 4-6 hours of dry weather is needed to allow the tank mixture to be absorbed by weed foliage. Environmental conditions that slow the drying of the spray mixture on the foliage such as high relative humidity, cool air temperatures or cloud cover, may increase the time required. Use a maximum of 10 grams of SPIKE HERBICIDE per hectare per year on spring planted wheat, barley, and summerfallow. Do not apply to spring wheat, durum wheat or barley undersown with legumes or grasses as injury to the forage may result. Do not remove soil from treated fields for use on lawns, in gardens or for backfill. Under certain conditions such as prolonged cool weather temperature or wide fluctuations in day/night temperatures just prior to or soon after treatment, temporary yellowing and/or crop stunting may occur. OVERSPRAY OR DRIFT TO IMPORTANT WILDLIFE HABITATS SUCH AS SHELTERBELTS, WETLANDS, SLOUGHS OR DRY SLOUGH BORDERS, OR WOODLOTS, SHOULD BE AVOIDED. LEAVE A 15-METER BUFFER ZONE BETWEEN THE LAST SPRAY SWATH AND THE EDGE OF ANY OF THESE HABITATS. Control of weeds growing.

Registered for culturesRate
Spring wheat10 g
Winter barley10 g
Spring barley10 g
Fallow10 g