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Implement Alley Discussion Forum

Crop Oil in Sprayer

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Phil/PA

04-30-2005 16:14:44




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What is the advantage of putting crop oil in a sprayer. I was spraying Roundup and got caught in a storm so I need to respray and my neighbor recommended mixing it with crop oil, says it makes it stronger/work better. Is this true and if so why? Does it help it stick to the weeds or something? Thanks.




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another doug

05-03-2005 03:53:46




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 Re: Crop Oil in Sprayer in reply to Phil/PA, 04-30-2005 16:14:44  
You might want to ask your chemical dealer about AMS (ammonium sulfate), it looks like sugar , tank mixes with glyphosate at 2 lbs per acre



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paul

05-01-2005 21:23:05




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 Re: Crop Oil in Sprayer in reply to Phil/PA, 04-30-2005 16:14:44  
As others say, read the label & follow that. Some have the additives built in, and some need them added. Follow the label for the product you are using.....

There are 2 different types of additives - one breaks down the wax on the plant a bit & lets the chemical get in, while the other is sticky & tacky & lets the chemical adhire to the plant for a longer time before evaporating. Different herbicides need different modes here. In the old days, folks used diesel fuel or dish soap, but there are better & cheaper products designed to get the job done today. Be sure to match the chemical to the right surfacent - you don't want to do it backwards.

As a side note, glysophate for one works better with soft water, not so well with hard water, so some additives help soften hard water to make the Roundup work better.

--->Paul

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thurlow

05-01-2005 07:15:39




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 Re: Crop Oil in Sprayer in reply to Phil/PA, 04-30-2005 16:14:44  
Just do whatever the label says; most (probably all) herbicides require a surfactant/crop oil for optimum results. Many of the current chemical formulations have this already in them..... ..... ..



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rbt

04-30-2005 18:56:38




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 Re: Crop Oil in Sprayer in reply to Phil/PA, 04-30-2005 16:14:44  
The label should tell what you need to add (if anything). Roundup already has the surfactant built into it. If you buy generic roundup (glyphosate) then you will probably need to add a surfactant.



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Michael Soldan

04-30-2005 17:29:59




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 Re: Crop Oil in Sprayer in reply to Phil/PA, 04-30-2005 16:14:44  
Phil, I agree with Bob and will attempt a little explanation. Crop oil is a surfactant which helps the chemical spray adhere through the "waxy " leaf of a plant. It has a penetrating effect for the chemical and helps it stay. I have heard lots of old timers say that if the chemical has had time to dry on the leaf before the rain the job is done..don't know how true that is. A neighbour used to do custom spraying and he bought liquid detergent by the case. He would add some liquid soap to the tank of spray, mix and then start spraying, he swore that soap was a good surfactant and helped penetrate and when it dried the soapy film held the chemical on the leaf. When I spray my lawn I always put a shot of detergent in with the Killex and I usually have great results. Good luck with the spraying...Mike in Exeter Ontario

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Bob

04-30-2005 16:54:10




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 Re: Crop Oil in Sprayer in reply to Phil/PA, 04-30-2005 16:14:44  
My understanding is that it helps the spray penetrate the waxy coating on the plant leaves.



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