With some of our rainfall patterns, there are low areas in some fields that are not as green as we would like to see. Cloudy and wet weather will cause photosynthesis to decline, and this contributes to the lack of green color of peanuts. In some of these areas, tissue analysis will show low nitrogen and in some cases low P and K.

With that said, farmers are asking if applied nitrogen will help. In my experience, it would be rare that ammonium sulfate or foliar-applied nitrogen will help. The root zone needs to dry, and when it does, nodules will become more active, as will roots. This will help peanuts green up. By the time you can drive through the wet spots in low areas of fields, without making ruts, peanuts will in most cases begin to improve.