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Sidedress N after hog manure?
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Marvin1982
Posted 6/5/2025 22:25 (#11250989 - in reply to #11250963)
Subject: RE: Sidedress N after hog manure?


Northeast, Nebraska
Kooiker - 6/5/2025 22:04

cyclones30 - 6/4/2025 13:30

I've seen manure from the same tank/dragline on the same field vary in N content by a wide margin. Depending on how it's been agitated, how full or empty the pit is, etc. 




I’m not even sure you could take a quart of hog manure from a pit, stir it up and divide it in 2 bottles, send both bottles to the same lab (label them as if they are from different pits) and get the same test results for both jars.  


Bottom line is, hog manure is not a consistent product like 28/32, urea or anhydrous and it is 100x harder to do an even job of application than when using commercial fertilizers.        10-15 gallons of 28/32 per acre, either pre plant or pre emerge weed & feed or side dressed, will cover up a lot of discrepancies in application rates and fertilizer value.  



Just curious, have you ever sent a sample of 28 or 32 percent in to get tested to make sure it is what they say it is? Did you also know that the legal tolerance is one tenth or 2% of total to be legally tendered? I recently found this out. So I can order a load of 32% nitrogen and it may only actually be 30% nitrogen and that is legally acceptable. Now what if you have a coop or supplier that likes to add a little water to it. We would never know. The point is we all should probably be sending samples to labs to make sure it is what they say it is. Same thing with starters, we put 100% trust into our suppliers.
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