excess N

Asked July 22, 2016, 10:18 AM EDT

So my soil is too nitrogen rich. How do I correct it for next year? Bill

Bernalillo County New Mexico soil and fertility issues

1 Response

Hi Bill,
Unfortunately, there is not much you can do to correct over-fertilization except wait. Nutrient levels will come down over time through plant uptake and weathering.

Some things to consider trying that may help speed up the waiting period:

1) Incorporation of sawdust or another high carbon material can help to tie up some of that nitrogen temporarily as the organisms that break down the carbon proliferate and incorporate the nitrogen into their bodies.

2) If this is a garden, growing a winter (non-legume) cover crop such as Rye or Oats could take up some of the excess nitrogen. Cutting this covercrop when it is getting older and woodier and using it as a mulch could take some Nitrogen in your soil out of play.