There are a number of common and effective insecticides to choose from, and one many farmers prefer is bifenthrin insecticide. Bifenthrin is an important tool in the control of corn rootworm, wireworms and grubs, to name a few, so it makes sense that you’d want to consider applying it early, ahead of any insect pressure in your new corn crop.
The simple answer is this: Only a bifenthrin designated with LFR or LFC, meaning liquid fertilizer compatible, can be used with your liquid fertilizer.
Not all bifenthrin formulations are the same. While the bifenthrin label may say it can be mixed with fertilizer, that doesn't mean it can be mixed with all fertilizers.
That LFR/LRC designation is important. If you overlook that detail, you may find yourself grinding to a halt when the adverse chemical reaction leads to gelling and plugging issues.
Bifenthrin products that are not LFR or LFC (such as Bi-Dash2E, for example) should be jar tested prior to tank mixing with liquid fertilizer on a large scale. If the product label says, "do not apply in starter fertilizer," a jar test with starter fertilizer is pointless because to apply this way is an off-label use.
As an example of how to do a jar test, we’ll use Bi-Dash 2E, which has corn rootworm control when applied in furrow at 0.3 fluid ounces per 1,000 ft of row. That correlates to 5.22 oz. per acre for 30 inch rows, and 4.35 oz per acre on 36 inch rows.*
To do a jar test for compatibility with 10-34-0 starter fertilizer (assuming an in-furrow application of 5 gallon per acre), combine the following in a clear quart jar:
For 30 inch rows: 20 oz. of fertilizer + 1 teaspoon of Bi-Dash 2E
For 36 inch rows: 25 oz. of fertilizer + 1 teaspoon of Bi-Dash 2E
Seal the jar and shake well.
Let stand for at least 30 minutes and observe if any separation of products occurs. Look for any floating product and settling of the product.
If the combination stays in suspension together for this extended length of time, they are likely to also be compatible in larger volumes. Compatibility can also be improved with tank agitation or by using warm water, if you have those options.
*Many types of fertilizers are used as starters and may react differently so a jar test is highly recommended to avoid any mixing issues. Adjust quantities in a jar test when using different Bi-Dash 2E rates or in furrow gallonage, or a different non-LFR or LFC formulation.
Another option to use a bifenthrin product would be to set up a chemical mixing system or pump system on your planter. It provides a convenient way to apply the Bi-Dash 2E directly into the seed furrow with no dilution or mixing in the sprayer tank.
Remember that it will take some time to set up on your planter due to the required plumbing with the system, so it is not necessarily a quick fix. Also, these kinds of pumps do require maintenance similar to other equipment to ensure your applications are done correctly.
FBN Direct has the diverse array of insecticides you need to proactively prepare against weed pressures and keep your operation running smoothly.
With 24/7 digital shopping access, direct-to-farm delivery, transparent pricing and savings opportunities, and detailed label information available for each product, FBN Direct offers the information and products you need to make an effective pest management strategy this season.
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