I’m glad you wrote this. I’m still relatively new to plots and I’ve stumbled upon a similar observation. The last two summers/falls I didn’t have time to tend to all of my perennial plots. My trail cams revealed that the ones that I sprayed and mowed and that looked impressive received regular visits from fawns, does and young bucks. The ones that I didn’t have time to manage grew weeds, got tall and attracted big bucks.
I found myself wondering why I’m spraying or mowing anything???
It all boils down to objectives. I'm attempting to do QDM. Quality food is an important part of that, but most folks trying to do QDM think food plots feed deer. They don't. They comprise a tiny fraction of a deer's diet. Most comes from native foods. That is why deer are limited by the underlying soil. We can amend soil in a small area like a farm field, but it is not practical to amend soil over miles unless you are farming for profit. The real purpose of a food plot for QDM is to provide a quality food source during times when nature is stingy. The best we can do is to even out the cycles.
I also have an attraction objective to some extent. I need to shoot does to keep the population in check and I want to introduce kids to the sport so harvest plots help with that.
My overall approach has evolved over time. The lion's share of our improvement over time has come from smart large scale timber management. Thinning, controlled burns, and such can provide hundreds of acres of improved quality food and rather than a net cost, there is a net profit. The key is balancing wildlife management objectives with timber profit.
With my food plots, my objective is to improve the long-term BCC as much as possible given the limitation of our underlying soils. I'm focusing on soil health and nutrient cycling rather than amendments. Like a doctor, my first duty is to do no harm. Thus, I'm minimizing depth and frequency of tillage to the top inch and often just surface broadcasting. My strategy is to create "wildlife openings" rather than traditional harvest plots. These are small and scattered. I start by trying to establish a clean clover base. I use gly for the initial burn down and only plant in the fall with a WR nurse crop. I mow the following spring as often as needed to release the clover from the WR. This generally gives me a very clean plot to start with using no post-planting herbicide. After that, I let the field go and become quite weed tolerant. I'll typically mow once a year just before the season. It is amazing how established clover bounces back when the cool evenings and fall rain favor it over the summer weeds. I'm also planting mast trees in these openings. Once they start bearing fruit, my plan is to simply mow them every couple years and let them revert back to nature. I'll only mow them often enough to keep them from becoming woody keeping them herbaceous. It will take years for this to come together but that is where I'm headed.
For our large feeding plots, I'm trying to address the summer stress period. I used to plant soybeans, but I'm moving to crops that don't require post-planting herbicide. I'm still refining that, but It will likely be come combination of Sunn Hemp and buckwheat with perhaps one other component. I still don't have high enough OM in my clay to get good results without min-tilling in the spring. In the fall, I simply throw and mow a cover crop. I like PTT/CC/WR in my area or something similar. This covers or fairly mild winter stress. They are plenty attractive for doe harvest as well as feeding deer.
If hunting mature bucks was my sole objective, I would plant a lot less food plots. I'd focus on bedding and arrangement. I'd limit hunting and would not harvest does.
It has been a great journey for me as my thinking has evolved over the years. It may change even more as I move forward.
Thanks,
Jack