Heat Harvest
Group 14
Finish strong
When it’s time to take a bow, make sure your InVigor® hybrid canola hits all the right notes. Heat® Harvest herbicide helps deliver consistent crop and weed dry down for easier cutting and a quicker harvest, making it a perfect match for InVigor canola hybrids with patented Pod Shatter Reduction technology.
- Consistent crop and weed dry down
- Easier crop cutting for a quicker harvest
- Backed by the Performance Support Guarantee*
*When adhering to specified rates outlined in the product label.
Labels & SDS
Additional Resources
Benefits of Heat Harvest
- Consistent crop and weed dry down
- Simplify your harvest: Easier crop cutting, increased harvest speed, decreased fuel consumption, less dockage
- Cleaner fields the following spring
Performance Trials
Weed dry down, 4 to 22 days after application
Harvest productivity comparison of harvest aids
Complete canola dry down
Heat LQ harvest aid combine comparison
Trials were conducted using Heat LQ. Label and efficacy at pre-harvest application for Heat Harvest is the same as Heat LQ.
Product Guides and Specifications
Application Tips
- Rainfastness – Heat Harvest is extremely rainfast and is limited by glyphosate.
- Follow the glyphosate manufacturer’s recommendation for rainfast guidelines.
When to Apply
Pre-harvest
| Crops | Staging1 |
|---|---|
| Harvest Aid | |
| Canola | Apply when the crop has reached 80% seed-colour change. |
| Chickpeas2 | Apply when majority of plants are mature with only the upper part remaining green. Seed moisture is 30% or less. Majority of Desi type seeds are yellow/brown, and Kabuli type seeds are tan/white. |
| Dry common beans2,3, soybeans2 | Apply when stems are green to brown, pods are mature (yellow, brown) and 80% - 90% of leaves have dropped. |
| Field peas2 | Apply when about 75% of pods have dried down (changed colour). |
| Flax4 | Apply when 75 to 80% of boils are brown and when seed moisture is less than 30%. |
| Red lentils5 | Apply when bottom 15% of pods are mature and brown with ripened seeds. The bottom pods should rattle when shaken. |
| Sunflowers6 | Apply when the backs of the heads and bracts are turning yellow, and seed moisture is 20 - 30%. |
| Weed Management | |
| Barley7, triticale, wheat (spring, durum, winter) | Hard dough stage with less than 30% moisture. A thumbnail impression remains on seed. |
Maximum Residue Limits
Please note: At the time of printing (2026), BASF has not fully established import tolerances (maximum residue limits (MRLs)) for mustard for all markets around the world. Because this crop is heavily exported, and some exports are made to markets where these MRLs have not been established, BASF does not recommend the use of Heat Harvest as a harvest aid on mustard for the 2026 season.
1 Heat Harvest herbicide must be applied after physiological maturity (less than 30% seed moisture).
2 Consult with grain buyer prior to application as the Keep It Clean 2026 Product Advisory indicates caution for glyphosate applications on all pulse crops except red lentils.
3 When tank mixed with glyphosate, consult glyphosate label or your BASF Territory Manager for information regarding use on specific varieties of dry common beans.
4 Glyphosate is not supported for pre-harvest use on flax. Use Heat Harvest as a standalone product only.
5 Heat Harvest is supported for pre-harvest use on red lentil varieties only. DO NOT apply Heat Harvest pre-harvest to green lentils. Please check with your grain buyer prior to the pre-harvest application of Heat Harvest in red lentils. Always apply Heat Harvest in a tank mix with glyphosate on red lentils.
6 Glyphosate is not registered for pre-harvest use in sunflowers. Use Heat Harvest as a standalone product only.
7 BASF supports the use of Heat Harvest herbicide for pre-harvest on feed barley only.
How Much to Apply
Heat Harvest Packaging Sizes & Acres Treated
| Pack Size | Acres per Unit |
| Case (2 × 1.73 L jugs of Heat Harvest & 2 × 8.1 L jugs of Merge) | 80 acres |
| Tote (4 × 10.79 L jugs of Heat Harvest & 200 L Merge) | 1,000 acres |
Water Volume
| Ground application | 40 L/ac (10 gal/ac) |
| Aerial application*: | 20 L/ac (5 gal/ac) |
*Heat Harvest is registered for aerial application.
Tank Mix Order of Addition
Heat Harvest + glyphosate
- Heat Harvest
- Glyphosate8
- Merge9
8 Glyphosate is not included in the case.
9 Merge is required and is included with Heat Harvest. Use all Merge included in the case.
Follow Crops
Pre-harvest
In the spring following fall application.
Barley (spring, malt, winter)
Canary seed
Canola (all types incl. Clearfield® canola)
Chickpeas
Corn (field and sweet)
Field peas
Flax
Lentils
Oats
Soybeans
Wheat (spring incl. Clearfield wheat, winter, durum)
Pre-harvest interval
2 days after application for chickpeas and dry common beans.
3 days after application for barley, canola, field peas, flax, red lentils, soybeans, triticale and wheat.
7 days after application for sunflowers.
Note: Consult glyphosate label for more information including pre-harvest interval and staging.
FAQ
What environmental conditions help Heat Harvest work the best as a pre-harvest aid?
Similar to all pre-harvest aids, Heat Harvest plus glyphosate will work best under favourable environmental conditions like warm temperatures, high sunlight and low humidity.
Adverse weather conditions such as rainfall, cool temperatures, smoke or high humidity will slow your canola crop dry down.
To optimize these conditions, slow your sprayer speeds, use higher water volumes (40 L/ac when tank mixed with glyphosate), use nozzles that point backwards and adjust for finer droplets to penetrate the canopy for a more thorough and even dry down.
How much glyphosate should I add to Heat Harvest?
It is recommended to use 1 REL of glyphosate.
Which type of barley can I spray Heat Harvest pre-harvest on?
Heat Harvest is only registered for use on feed barley.
It is getting later in the season (i.e., after September 30th) and I want to use Heat Harvest to dry down my canola crop. How do I maximize the effectiveness of this application?
You can improve the effectiveness of your Heat Harvest + glyphosate application by increasing the water volumes and go up to 20 gallons per acre.