The Tropical Fruit Forum

Citrus => Citrus General Discussion => Topic started by: mxcolin on January 06, 2022, 01:54:26 PM

Title: Low Biuret Urea
Post by: mxcolin on January 06, 2022, 01:54:26 PM

I apologize if this has been answered before, I tried searching first. Where can I get a low biuret urea foliar spray? I've done a lot of searching but I can't seem to find it anywhere. Do I need to buy low biuret urea and mix it myself? If so where do I find that, again this seems difficult to locate? Any guidance would be greatly appreciated.

Title: Re: Low Biuret Urea
Post by: brian on January 06, 2022, 02:07:41 PM

When I looked a year or two I could only find powder.  I forget where I got it, but the powder seemed widely available

Title: Re: Low Biuret Urea
Post by: pagnr on January 06, 2022, 05:16:52 PM

Here is some Low Biuret Urea application info from an Australian company
https://www.incitecpivotfertilisers.com.au/~/media/Files/IPF/Documents/Use%20Directions/Use%20Directions%2002%20Liquifert%20Lo-Bi.pdf
This product would have to be sourced from a farm supply shop.

Title: Re: Low Biuret Urea
Post by: Millet on January 06, 2022, 05:58:54 PM

I purchased .low biuret urea (0.5% biuret) from Custom Hydro Nutrients.
https://customhydronutrients.com/

Their product is a fine water soluble perils.  Dissolve 200 grams per gallon of water add a teaspoon of surfactant and your ready to spray.

Title: Re: Low Biuret Urea
Post by: citrange on January 07, 2022, 06:21:50 AM

There is another very useful article about citrus foliar feeding, chemical deficiencies, toxicities etc at the link below. Contains a lot of interesting information - although of course it is directed at commercial growers and points them towards the company products. Includes picture of citrus leaves with biuret damage.
https://www.haifa-group.com/files/Guides/Citrus.pdf (https://www.haifa-group.com/files/Guides/Citrus.pdf)
Here in England the amount of biuret in urea is rarely given in the product description, possibly because no commercial crops here are very sensitive to it. Sometimes it is said to be <1% but I have read that a truly low biuret product should be <0.2%.

Title: Re: Low Biuret Urea
Post by: mxcolin on January 07, 2022, 11:49:13 AM

Quote from: Millet on January 06, 2022, 05:58:54 PM

I purchased .low biuret urea (0.5% biuret) from Custom Hydro Nutrients.
https://customhydronutrients.com/

Their product is a fine water soluble perils.  Dissolve 200 grams per gallon of water add a teaspoon of surfactant and your ready to spray.

Awesome, thanks so much. What can I use as a surfactant?