P,K, and Ca are nutrients I try to keep running within good to optimum levels throughout the year. I don’t till and have built up pretty good holding capacity in my soil so I can get away with only adding P every 1-2 years now and K about every 10-12 months in order to bump those levels back up. The Ca or lime is has held for a few years. I'm just watching tests to see how many years before needing more.

Nitrogen is a little different than those other nutrients. I usually add a little bit at planting to help compensate for biomass tie up and then come back about 6-8 weeks later with a heavier application to really boost growth through the last part of hunting season. If you’re struggling to put out any growth in your plot then you can come back with N applications ever 7-8 weeks during spring and summer as well….although I don’t do that anymore. It seems like I have enough organic N in my soil now combined with the clover N credits that natural summer veg looks healthy.

How well your plot does or doesn't hold these nutrients is completely dependent on your soil type along with your management practices.