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if you want 50lbs of N, that's 17gallons of 28. 28lbs of N per 100lbs UAN solution

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Oh is that how the math is? I’m glad I asked. So should I add water or not and what rate should I spray at? And this is for second cutting so should I lower my pounds per acre?if you want 50lbs of N, that's 17gallons of 28. 28lbs of N per 100lbs UAN solution

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here's a link to a hay & forage article that suggests 50-60lb N is reasonable: Don't cheat this grass input

My 200 gallon sprayer works best when delivering 20gpa/40 psi/5MPH using SJ3 nozzles. I dilute with water to get the to that 20 gpa number. I use SJ3's to avoid burning the leaves in the summer.

Here's the numbers I use:

28% = 2.9# N/Gal

= 10.6 #/Gal

= 189 Gals/Ton

= 548 # N/Ton

Example:

For 40 #N/AC: 40#N /2.9 #/Gal = 13.8 Gals 28 per acre.

To get 20 gpa, add 60 gal water/140 gals 28. (I like to round off to make the arithmetic easier.)

For 40 ac @ 40#N/ac = 13.8 Gals 28 * 40 = 552 Gals 28 = (552 Gals * 10.6#28/Gal = 2.93 Tons 28)

Hope this helps.

Ralph

And I hope my math is right!

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Yeah looks correct to me. Thanks for the help

My 200 gallon sprayer works best when delivering 20gpa/40 psi/5MPH using SJ3 nozzles. I dilute with water to get the to that 20 gpa number. I use SJ3's to avoid burning the leaves in the summer.

Here's the numbers I use:

28% = 2.9# N/Gal

= 10.6 #/Gal

= 189 Gals/Ton

= 548 # N/Ton

Example:

For 40 #N/AC: 40#N /2.9 #/Gal = 13.8 Gals 28 per acre.

To get 20 gpa, add 60 gal water/140 gals 28. (I like to round off to make the arithmetic easier.)

For 40 ac @ 40#N/ac = 13.8 Gals 28 * 40 = 552 Gals 28 = (552 Gals * 10.6#28/Gal = 2.93 Tons 28)

Hope this helps.

Ralph

And I hope my math is right!

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Would rain not happening for a couple days cause a problem with burn or even volatility?

I agree----28 needs to be rained in, preferably within 24 hrs to avoid burning and loss due to volitazation. I've been applying the summer go as soon as possible after the first cut. I run SJ3s to avoid leaf contact.

I was not aware that sulphur helped.

Ralph

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Would 3 gallons of water with 17 gallon of 28 at 20GPA still cause burn?I agree----28 needs to be rained in, preferably within 24 hrs to avoid burning and loss due to volitazation. I've been applying the summer go as soon as possible after the first cut. I run SJ3s to avoid leaf contact.

I was not aware that sulphur helped.

Ralph

Depends--97.6453Z% probably--1) when it rains, 2) crop height (freshly mowed or has substantial regrowth), 3) temperature, 4) nozzles used, 5) spray height, and 6) 16384 other factors.Would 3 gallons of water with 17 gallon of 28 at 20GPA still cause burn?

Helps?

Ralph

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Freshly mowed would have a lower chance of burn right?Depends--97.6453Z% probably--1) when it rains, 2) crop height (freshly mowed or has substantial regrowth), 3) temperature, 4) nozzles used, 5) spray height, and 6) 16384 other factors.

Helps?

Ralph

Correct--you'd be dribbling it onto bare ground much of the time.Freshly mowed would have a lower chance of burn right?

Ralph

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