The total target can be the same yes, but your per app rate will be lower and more frequent apps to reach the target with liquid. Because it is typically more 'available' for the grass. (There are certain slow-release type liquid nitrogen though)

 

The total target can be the same yes, but your per app rate will be lower and more frequent apps to reach the target with liquid. Because it is typically more 'available' for the grass. (There are certain slow-release type liquid nitrogen though)

I get that. But the recommended app is almost 10x less N vs granular. Who is applying 40 apps of liquid a year?
And if I do increase the rate, that would mean I need huge amount of gallons to get through a season. Doesn't seem right either.

The only explanation that makes sense to me is that liquid fert requires less than 4lbs a year, maybe only half a pound since it's readily available to the plant and more efficient. However I don't see anything anywhere that indicates that liquids have a different annual target.

 

The total target can be the same yes, but your per app rate will be lower and more frequent apps to reach the target with liquid. Because it is typically more 'available' for the grass. (There are certain slow-release type liquid nitrogen though)

I get that. But the recommended app is almost 10x less N vs granular. Who is applying 40 apps of liquid a year?
And if I do increase the rate, that would mean I need huge amount of gallons to get through a season. Doesn't seem right either.

The only explanation that makes sense to me is that liquid fert requires less than 4lbs a year, maybe only half a pound since it's readily available to the plant and more efficient. However I don't see anything anywhere that indicates that liquids have a different annual target.

Most ppl are using ams or urea for liquid N apps at .25lbs of N per k. These apps are often weekly during the season. The grass wouldn't be able to handle 1lb of N per k via a foliar app.

Your target rate of N per year should remain the same with liquid or granular.

 

don't rely on liquid for your N needs, granular is going to be the way to go as you need lbs of this stuff. Get the cheapest N you can. Personally I buy Urea 46-0-0 and the cheapest bag of quality slow release fertilizer I can get. Scotts, Vigoro, or Menards brand should all be fine. But I know scotts and vigoro have a small and uniform granule.

 

How about a combination of granular and foliar...no need to be set on just one or the other. That's what most of us do and get close to 4-5lbs of N with ease...

 

I only do foliar in the summer to control light apps N at 0.125 lb per app.. the main apps in the spring and fall are all granular..

 

don't rely on liquid for your N needs, granular is going to be the way to go as you need lbs of this stuff. Get the cheapest N you can. Personally I buy Urea 46-0-0 and the cheapest bag of quality slow release fertilizer I can get. Scotts, Vigoro, or Menards brand should all be fine. But I know scotts and vigoro have a small and uniform granule.

Just curious regarding the granular, are you talking about slow or fast release N? Fast release N like Urea when applied as granular, dissipates and breaks down pretty quickly into the air vs foliar app Urea that gets absorbed into the plant leaf within 4 hours. I would assume that you wouldn't "exactly" get the full rate when applying granular. Just spit ballin', I may be wrong

 

don't rely on liquid for your N needs, granular is going to be the way to go as you need lbs of this stuff. Get the cheapest N you can. Personally I buy Urea 46-0-0 and the cheapest bag of quality slow release fertilizer I can get. Scotts, Vigoro, or Menards brand should all be fine. But I know scotts and vigoro have a small and uniform granule.

Just curious regarding the granular, are you talking about slow or fast release N? Fast release N like Urea when applied as granular, dissipates and breaks down pretty quickly into the air vs foliar app Urea that gets absorbed into the plant leaf within 4 hours. I would assume that you wouldn't "exactly" get the full rate when applying granular. Just spit ballin', I may be wrong

It doesn't matter if the N is fast or slow release, as long as your getting the 4 pounds needed. That being said, you don't apply all 4bls of fast release at once as you will instantly burn your lawn. I use both Urea and a granular fertilizer (scotts or whatever is on sale). The easist thing is to just follow the 4 step program of any brand you like (scotts, vigoro, mendards) and you should be getting everything you need. I'm not sure if the vigoro has iron in it but the scotts does and I believe menards does as well.

 

Found this post in a Google search - In case someone else has the original poster's question...

The label rate is low to guarantee no burn for most lawns (considering some lawns like Zoysia, need less Nitrogen).
In considering Bio-Enhanced 16-4-8, remember that the product is putting down trace nutrients, seaweed/kelp, Humic acids, etc. - all designed to store nutrients better, stimulate normal microbial activity, and naturally feed the soil/lawn. A pure Nitrogen liquid fertilizer will not do that. Leaving clippings on the lawn will return up to 1/2 lb of nitrogen a year as well.

Yes, 40 applications a year (weekly, ~9 months) would be correct on the label rate. For the BIo-Enhanced, you can probably safely double their rates, apply bi-weekly, which is still 20 applications a year. As long as the lawn has plenty of water, it should be fine. They recommend 10-12oz/1k sq ft. which is .125-.15 lb. I'm sure you can get away safely with double, .25 - .3 lb/s. on a healthy, well-watered lawn. For the best results, apply during the afternoon and let it sit for at least 4 hours (or overnight), then water at least 1/4 inch in the AM to get anything else into the soil.

Now this is a lot of frequent fertilization - not many have time for that. I think this is why I normally see a lot more granular applications that are slow release. Then using "spoon feeding" application rates of Liquid to enhance or supplement further. Also, liquids at low rates tend to be possible even in the hot summer (assuming irrigation is available).