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<blockquote data-quote="Bill Elliott" data-source="post: 205026" data-attributes="member: 2946"><p>Eric,</p><p></p><p> I'll take a shot at it....it your hypothetical 100lbs of "28-8-6" you would have....28lbs of N, 8lbs of P and 6lbs of K. I'm not sure where you are located so don't know what type of soil you have...because they each react differently to fertilizers. I'm located in SE Alabama and our soil is sandy loam. Nitrogen moves through our soil quickly so we tend to use lots of it because it promotes protein formation and protein result in more green leafy growth. I believe Nitrogen moves through most soils fairly fast. Phosphorus, on the other hand, does not move through the soil and remains on the surface. Phosphorus is essential in energy transformations in plants...carbohydrates storage. If your test indicates you don't need it...don't add it....phorphorus can run off into streams/lakes and leads to excessive algae growth. The third number...Potassium is a salt and helps plant take up water and other nutrients. Bermudagrasses for example "use" almost as much "K" and it does "N"....but not much "P"...Bahiagrasses are about the same. My soil tests came back of Auburn indicating that I only needed to add 60lbs of N per acre to my bahia pastures...nothing else. Already done and now waiting for rain...last rain was 30 days ago. Sorry for long answer...hope this helps...cheers, Bill</p></blockquote><p></p>
[QUOTE="Bill Elliott, post: 205026, member: 2946"] Eric, I'll take a shot at it....it your hypothetical 100lbs of "28-8-6" you would have....28lbs of N, 8lbs of P and 6lbs of K. I'm not sure where you are located so don't know what type of soil you have...because they each react differently to fertilizers. I'm located in SE Alabama and our soil is sandy loam. Nitrogen moves through our soil quickly so we tend to use lots of it because it promotes protein formation and protein result in more green leafy growth. I believe Nitrogen moves through most soils fairly fast. Phosphorus, on the other hand, does not move through the soil and remains on the surface. Phosphorus is essential in energy transformations in plants...carbohydrates storage. If your test indicates you don't need it...don't add it....phorphorus can run off into streams/lakes and leads to excessive algae growth. The third number...Potassium is a salt and helps plant take up water and other nutrients. Bermudagrasses for example "use" almost as much "K" and it does "N"....but not much "P"...Bahiagrasses are about the same. My soil tests came back of Auburn indicating that I only needed to add 60lbs of N per acre to my bahia pastures...nothing else. Already done and now waiting for rain...last rain was 30 days ago. Sorry for long answer...hope this helps...cheers, Bill [/QUOTE]
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