Nitrogen or Phosphorous Based Manure Management.

I read a research article on using phosphorous to determine manure rate instead of maxing out the nitrogen.  The Cornell researchers did some in field research and found that they were short on nitrogen if they based the application on phosphorous.  This is not really surprising. You could do the math.  The advantage of applying manure based on phosphorous need is that it will help you keep disolved phosphorous out of our water.  In addition, if you make a small application of fertilizer nitroen, it will speed up the mineralization of the manure nitrogen.  It might save you a little on fertilizer too.